Author: claimsbot

1. A method for discovering Internet Protocol (IP) addresses, comprising:
determining whether an intermediary Network Address Translator (NAT) resides between a local NAT and a public Internet network;
enabling a local address return service when no intermediary NAT resides between the local NAT and a public Internet network; and
disabling the local address return service and using a remote address return service when the intermediary NAT resides between the local NAT and a public Internet network.
2. The method according to claim 1 including:
sending a packet through the local NAT to the remote address return service;
enabling the local address return service when a returned IP address from the remote address return service matches an IP address assigned to the local NAT; and
disabling the local address return service and using the remote address return service when the returned IP address does not match the IP address assigned to the local NAT.
3. The method according to claim 1 including using Simple Traversal of User Datagram Protocol (UDP) Through Network Address Translators (NATS) (STUN) servers for both the local address return service and the remote address return service.
4. The method according to claim 3 including operating a STUN client in the local NAT to determine whether the intermediary NAT resides between the local NAT and the public Internet network.
5. The method according to claim 4 including using the local STUN server to listen for address return requests over an internal private interface in the local NAT and not listening for address return requests over a public interface in the local NAT.
6. The method according to claim 1 including:
using the local address return service to identify an IP address and port number for the local NAT when the local address return service is enabled; and
using the remote address return service to identify an IP address and port number for the intermediary NAT when the local address return service is disabled.
7. The method according to claim 1 including:
trying to contact one or more public address return services;
enabling the local address return service when none of the public address return services are available;
trying periodically to re-contact the one or more public address return services; and
disabling the local address return service and using one of the public address return services when one of the public address return services is contacted and the intermediary NAT resides between the local NAT and the public Internet network.
8. A network processing device, comprising:
a processor operating a client that determines whether the network processing device operates within a public network or operates within a private network, the processor enabling or disabling a local address discovery service depending upon whether the network processing device operates within the public network or within the private network, wherein the processor enables the local address discovery service when a remote address discovery service cannot be contacted and conducts address discovery operations for endpoints on the private network until the remote address discovery service becomes available.
9. The network processing device according to claim 8 wherein the processor operates a Network Address Translator (NAT) that receives Internet Protocol (IP) packets from endpoints, reformats the IP packets with an IP address and User Datagram Protocol (UDP) port number associated with the NAT, and sends the reformatted packets to the local address discovery service when the NAT operates within the public network.
10. A network processing device according to claim 9 wherein the STUN service, the STUN client, and the NAT all reside within the network processing device.
11. The network processing device according to claim 8 including an internal interface for connecting to the private network and a public interface for connecting directly or indirectly to the public network.
12. The network processing device according to claim 11 wherein the local address discovery service only listens for address discovery requests through the internal interface.
13. The network processing device according to claim 8 wherein the local address discovery service is a Simple Traversal of User Datagram Protocol (UDP) Through Network Address Translators (NATS) (STUN) service and the client operating in the network processing device is a STUN client.
14. A network device, comprising:
memory storing a list of address locations for address discovery devices used for identifying addresses for Network Address Translators (NATs); and
a processor using a remote address discovery device to discover the address for an intermediate NAT when the intermediate NAT resides between a local NAT and a public network and using a local address discovery device to discover the address for the local NAT when no intermediate NAT resides between the local NAT and the public network.
15. The network device according to claim 14 wherein the processor first attempts to access the local address discovery device and then uses the remote address discovery device when the local address discovery device is disabled.
16. The network device according to claim 14 wherein the processor conducts Internet Protocol (IP) phone calls over a local private network using the local NAT address identified by the local address discovery device when no remote address discovery devices can be contacted.
17. The network device according to claim 16 wherein the local and remote address discovery device are Simple Traversal of User Datagram Protocol (UDP) Through Network Address Translators (NATS) (STUN) servers.
18. The network device according to claim 14 wherein the processor sends a packet out to a selected one of the local or remote address discovery devices and receives back a reply packet that identifies a public address and port number associated with the local NAT or intermediate NAT that connects the network device to the public network.
19. A method for discovering an Internet Protocol (IP) address, comprising:
sending an inquiry through a local Network Address Translator (NAT) first to a local address return server to identify a public address for the local NAT; and
alternatively sending the inquiry through a remote NAT to a remote address return server to identify a public address for the remote NAT when the remote NAT is located between the local NAT and a public network.
20. The method according to claim 19 including sending the inquiry to the remote address return server whenever the local address return server is disabled.
21. The method according to claim 19 including:
attempting to contact one or more remote address return servers operating on the public network;
sending an inquiry to the local address return server for the IP address of the local NAT when none of the remote address return servers can be contacted; and
using the IP address of the local NAT to conduct IP communications over a private network when the remote address servers cannot be contacted.
22. The method according to claim 19 including using Simple Traversal of User Datagram Protocol (UDP) Through Network Address Translators (NATS) (STUN) servers for the local and remote address return servers.
23. A system for discovering an Internet Protocol (IP) address, comprising:
means for sending an inquiry through a local Network Address Translator (NAT) first to a local address return server to identify a public address for the local NAT; and
means for alternatively sending the inquiry through a remote NAT to a remote address return server to identify a public address for the remote NAT when the remote NAT is located between the local NAT and a public network.
24. The system according to claim 23 including means for sending the inquiry to the remote address return server whenever the local address return server is disabled.
25. The system according to claim 23 including:
means for attempting to contact one or more remote address return servers operating on the public network;
means for sending an inquiry to the local address return server for the IP address of the local NAT when none of the remote address return servers can be contacted; and
means for using the IP address of the local NAT to conduct IP communications over a private network when the remote address servers cannot be contacted.
26. The system according to claim 23 including means for using Simple Traversal of User Datagram Protocol (UDP) Through Network Address Translators (NATS) (STUN) servers for the local and remote address return servers.
27. An article of machine-readable media containing instructions for discovering an Internet Protocol (IP) address, the instructions when executed:
sending an inquiry through a local Network Address Translator (NAT) first to a local address return server to identify a public address for the local NAT; and
alternatively sending the inquiry through a remote NAT to a remote address return server to identify a public address for the remote NAT when the remote NAT is located between the local NAT and a public network.
28. The article of machine-readable media according to claim 27 including instructions when executed sending the inquiry to the remote address return server whenever the local address return server is disabled.
29. The article of machine-readable media according to claim 28 including instructions when executed:
attempting to contact one or more remote address return servers operating on the public network;
sending an inquiry to the local address return server for the IP address of the local NAT when none of the remote address return servers can be contacted; and
using the IP address of the local NAT to conduct IP communications over a private network when the remote address servers cannot be contacted.
30. The article of machine-readable media according to claim 27 including instructions when executed using Simple Traversal of User Datagram Protocol (UDP) Through Network Address Translators (NATS) (STUN) servers for the local and remote address return servers.

The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.

1. A method for manufacturing a semiconductor device comprising the steps of:
irradiating with an ion beam a single crystal semiconductor substrate provided with an insulating film to form a damaged region in the single crystal semiconductor substrate,
floating liquid glass over a liquid denser than the liquid glass to shape the liquid glass into a plate,
disposing the single crystal semiconductor substrate provided with the damaged region over the plate-like liquid glass so that the insulating film and the liquid glass face each other,
cooling the plate-like liquid glass and the single crystal semiconductor substrate slowly, whereby a glass substrate is obtained from the plate-like liquid glass and concurrently the glass substrate and the single crystal semiconductor substrate are bonded together, and
separating a single crystal semiconductor layer from the single crystal semiconductor substrate along the damaged region.
2. The method for manufacturing a semiconductor device according to claim 1, wherein the single crystal semiconductor substrate is one of a single crystal silicon substrate, a single crystal germanium substrate, a single crystal silicon germanium substrate, a compound semiconductor substrate of gallium arsenide, and a compound semiconductor substrate of indium phosphide.
3. The method for manufacturing a semiconductor device according to claim 1, wherein the insulating film includes one of or two or more of a silicon oxide film, a silicon nitride film, a silicon oxynitride film, a silicon nitride oxide film, a germanium oxide film, a germanium nitride film, a germanium oxynitride film, a germanium nitride oxide film, an aluminum oxide film, a tantalum oxide film, a hafnium oxide film, an aluminum nitride film, an aluminum oxynitride film, and an aluminum nitride oxide film.
4. The method for manufacturing a semiconductor device according to claim 1, wherein the insulating film is an oxide film formed by oxidation of a surface of the single crystal semiconductor substrate in gas including chlorine.
5. The method for manufacturing a semiconductor device according to claim 1, wherein the ion beam is a beam including a hydrogen ion.
6. A method for manufacturing a semiconductor device comprising the steps of:
irradiating with an ion beam a single crystal semiconductor substrate provided with an insulating film to form a damaged region in the single crystal semiconductor substrate,
floating liquid glass over a liquid denser than the liquid glass to shape the liquid glass into a plate,
disposing the single crystal semiconductor substrate provided with the damaged region over the plate-like liquid glass so that the insulating film and the liquid glass face each other,
cooling the plate-like liquid glass and the single crystal semiconductor substrate slowly, whereby a glass substrate is obtained from the plate-like liquid glass and concurrently the glass substrate and the single crystal semiconductor substrate are bonded together,
separating a single crystal semiconductor layer from the single crystal semiconductor substrate along the damaged region, and
taking a foreign matter between the glass substrate and the single crystal semiconductor layer into the glass substrate.
7. The method for manufacturing a semiconductor device according to claim 6, wherein the single crystal semiconductor substrate is one of a single crystal silicon substrate, a single crystal germanium substrate, a single crystal silicon germanium substrate, a compound semiconductor substrate of gallium arsenide, and a compound semiconductor substrate of indium phosphide.
8. The method for manufacturing a semiconductor device according to claim 6, wherein the insulating film includes one of or two or more of a silicon oxide film, a silicon nitride film, a silicon oxynitride film, a silicon nitride oxide film, a germanium oxide film, a germanium nitride film, a germanium oxynitride film, a germanium nitride oxide film, an aluminum oxide film, a tantalum oxide film, a hafnium oxide film, an aluminum nitride film, an aluminum oxynitride film, and an aluminum nitride oxide film.
9. The method for manufacturing a semiconductor device according to claim 6, wherein the insulating film is an oxide film formed by oxidation of a surface of the single crystal semiconductor substrate in gas including chlorine.
10. The method for manufacturing a semiconductor device according to claim 6, wherein the ion beam is a beam-including a hydrogen ion.
11. A method for manufacturing a semiconductor device comprising the steps of:
irradiating with an ion beam a single crystal semiconductor substrate provided with an insulating film to form a damaged region in the single crystal semiconductor substrate,
floating liquid glass over a liquid denser than the liquid glass to shape the liquid glass into a plate,
disposing over the plate-like liquid glass the single crystal semiconductor substrate provided with the damaged region so that the insulating film and the liquid glass face each other,
sticking a substrate support portion onto a side of the single crystal semiconductor substrate which is opposite to a side where the insulating film is formed,
cooling the plate-like liquid glass and the single crystal semiconductor substrate slowly, whereby a glass substrate is obtained from the plate-like liquid glass and concurrently the glass substrate and the single crystal semiconductor substrate are bonded together, and
separating a single crystal semiconductor layer from the single crystal semiconductor substrate onto which the substrate support portion is stuck, along the damaged region.
12. The method for manufacturing a semiconductor device according to claim 11, wherein the single crystal semiconductor substrate is one of a single crystal silicon substrate, a single crystal germanium substrate, a single crystal silicon germanium substrate, a compound semiconductor substrate of gallium arsenide, and a compound semiconductor substrate of indium phosphide.
13. The method for manufacturing a semiconductor device according to claim 11, wherein the insulating film includes one of or two or more of a silicon oxide film, a silicon nitride film, a silicon oxynitride film, a silicon nitride oxide film, a germanium oxide film, a germanium nitride film, a germanium oxynitride film, a germanium nitride oxide film, an aluminum oxide film, a tantalum oxide film, a hafnium oxide film, an aluminum nitride film, an aluminum oxynitride film, and an aluminum nitride oxide film.
14. The method for manufacturing a semiconductor device according to claim 11, wherein the insulating film is an oxide film formed by oxidation of a surface of the single crystal semiconductor substrate in gas including chlorine.
15. The method for manufacturing a semiconductor device according to claim 11, wherein the ion beam is a beam including a hydrogen ion.
16. A method for manufacturing a semiconductor device comprising the steps of:
forming a porous single crystal semiconductor layer over a single crystal semiconductor substrate,
forming a dense single crystal semiconductor layer over the porous single crystal semiconductor layer,
floating liquid glass over a liquid denser than the liquid glass to shape the liquid glass into a plate,
disposing the single crystal semiconductor substrate provided with the porous single crystal semiconductor layer and the dense single crystal semiconductor layer over the plate-like liquid glass so that the single crystal semiconductor substrate and the liquid glass face each other,
cooling the plate-like liquid glass and the single crystal semiconductor substrate slowly, whereby a glass substrate is obtained from the plate-like liquid glass and concurrently the glass substrate and the single crystal semiconductor substrate are bonded together, and
separating the dense single crystal semiconductor layer from the single crystal semiconductor substrate along the porous single crystal semiconductor layer.
17. The method for manufacturing a semiconductor device according to claim 16, wherein the porous single crystal semiconductor layer is formed by anodic oxidation of the single crystal semiconductor substrate.
18. The method for manufacturing a semiconductor device according to claim 16, wherein the single crystal semiconductor substrate is one of a single crystal silicon substrate, a single crystal germanium substrate, a single crystal silicon germanium substrate, a compound semiconductor substrate of gallium arsenide, and a compound semiconductor substrate of indium phosphide.
19. A method for manufacturing a semiconductor device comprising the steps of:
irradiating with an ion beam a single crystal semiconductor substrate provided with an insulating film to form a damaged region in the single crystal semiconductor substrate,
disposing solid glass over a solid of a liquid material denser than liquid glass,
disposing over the solid glass the single crystal semiconductor substrate provided with the damaged region so that the insulating film and the solid glass face each other,
heating the solid glass and the solid of a liquid material denser than liquid glass, so that the solid glass is turned into the liquid glass and the solid of a liquid material denser than the liquid glass is turned into the liquid material,
cooling the liquid glass and the single crystal semiconductor substrate slowly, whereby a glass substrate is obtained from the liquid glass and concurrently the glass substrate and the single crystal semiconductor substrate are bonded together, and
separating a single crystal semiconductor layer from the single crystal semiconductor substrate along the damaged region.
20. The method for manufacturing a semiconductor device according to claim 18, wherein the single crystal semiconductor substrate is one of a single crystal silicon substrate, a single crystal germanium substrate, a single crystal silicon germanium substrate, a compound semiconductor substrate of gallium arsenide, and a compound semiconductor substrate of indium phosphide.

1-19. (canceled)
20. A process for planning a communications network adapted to serve a set of user terminals to which communication services are provided by means of a set of service areas identified through cells with respective associated cell serving stations, each serving station having certain output transmission power and service capacity, wherein the cells are divided into pixels and wherein said user terminals are adapted to communicate within said cells on respective uplinks and downlinks, said services having associated respective service quality levels on said uplinks and downlinks, each one of said serving stations having respective power limits related to the maximum power that can be delivered by the radio station globally toward all served terminals and the power that can be delivered by an individual connection toward an individual terminal, comprising the steps of determining each one of the service areas of said set as joint uplinkdownlink service areas composed of the set of pixels in which respective service is guaranteed by complying with associated quality requirements on both uplinks and downlinks and verifying the compliance of said limits on the maximum power that can be delivered by the radio station both globally toward all served terminals and for the individual connection toward an individual terminal.
21. The process according to claim 20, wherein the step of determining said joint uplinkdownlink service area comprises:
a first sub-step of controlling the admission wherein a set of admission control pixels are determined that are subjected to be served by the determined service capacity of the respective serving station, and
a second sub-step of controlling the power which also comprises checking whether said admission control pixels belong to said joint uplinkdownlink service area.
22. The process according to claim 21, wherein said first sub-step defines, depending on the distribution of expected traffic and the domain of pixels in which the signal from said serving station can be decoded by a terminal when there is only thermal noise, at least one sub-area of said domain comprising admission control pixels in which a control channel of said serving station has a signal level that is greater than all control signals related to all other serving stations belonging to the area under planning.
23. The process according to claim 21, wherein said second sub-step comprises:
checking in a first check step on the uplink, depending on the admission control pixels, whether the power level of terminal necessary for communicating with said serving station is lower than or equal to the maximum power level that can be delivered by the terminal; and
checking in a second checking step on the downlink, depending on said first checking step, whether the power level of said serving station falls within the maximum power that can be delivered by the serving station globally toward all served terminals and by individual connection toward an individual terminal.
24. The process according to claim 21, comprising performing the first sub-step of controlling the admission by determining a cell loading factor as ratio between the cell load that is provided to be accepted and the maximum load defined as load next to which the system is under unstable conditions.
25. The process according to claim 22, comprising, in case of a universal mobile telecommunications network, the step of choosing, as said sub-area, the best server common pilot-channel area of said universal mobile telecommunications network related to the stations belonging to the service area under planning.
26. The process according to claim 21, wherein said second sub-step of jointly checking the power on the uplinks and downlinks comprises a check on the uplink for computing the necessary power for every terminal being present in one of said admission control pixels for communicating with the serving station and then verifying that such power is lower than or at most equal to the maximum power that can be delivered by the terminal, and
i) if said check on the uplink provides a positive result, inserting the related pixel in the set of served pixels on the uplink, and
ii) if said check on the uplink provides a negative result, inserting the related pixel in the set of pixels that are not operating.
27. The process according to claim 26, wherein said second sub-step of jointly checking the power on the uplinks and downlinks comprises a further check, performed on said set of served pixels on the uplink, comprising computing the necessary power for the station serving each pixel of said served set on the uplink for managing the expected traffic in the pixel and in verifying that such power is within a given range and wherein total power of every serving station is lower than or at most equal to maximum power that can be delivered by the serving station.
28. The process according to claim 20, comprising the steps of:
initialising the power associated with user terminals of said set by initialising to zero all output power of the terminals for every pixel belonging to a respective access control area and for every service;
initialising, for every cell, a first set of pixels belonging to the service area of the cell by setting said set equal to a second set of the pixels belonging to said respective access control area of the cell;
initialising the cell power, setting said respective output transmission power to a minimum value corresponding to the power dedicated to common channels;
determining, for every cell, the interference to which the cells had been subjected;
establishing new power values associated with the user terminals of said set, determining for every terminal and for every pixel belonging to said respective access control area and for every service, the power required to the terminals for satisfying the service quality requirements on the uplink, updating said first set by assigning to said first set the pixels of said second set for which said service quality requirements on the uplink are satisfied;
computing the necessary power for every connection on said downlink, determining for every pixel belonging to said respective access control area and for every service, the power required to the serving station of said cell to satisfy the service quality requirements on the downlink;
establishing new total cell powers, cumulating the service powers used by the respective serving station to serve the communication channels toward said user terminals; and
setting out of service the pixels that require such a service power to be outside a given range of minimum power and maximum power.
29. The process according to claim 28, comprising, after the step of establishing new power values associated with the user terminals of said set, the step of performing, for every serving station, a power stability test for user terminals by iterating the computation with increasing power values associated with user terminals of said set until, for every user terminal, for every pixel and for every service, a power value is obtained corresponding to an increase with respect to the previous interation lower than a predefined threshold value in uplink.
30. The process according to claim 28, comprising, after the step of establishing new total cell powers, the step of performing, for every serving station, a power stability test of a cell by iterating the computation with increasing values of total cell power until for every cell, a power value is obtained that corresponds to an increase with respect to the previous interation lower that a predefined threshold value in downlink.
31. The process according to claim 28, wherein said step of initialising the cell powers is realised by setting said respective output transmission powers to a minimum value corresponding to the power dedicated to common channels divided into terms related to a signaling channel and the remaining cell channels.
32. The process according to claim 28, wherein said step of initialising the cell powers is realised by expressing said powers with a value between the fraction of the amplifier power class of the related serving station and a fraction of the power delivered on a common pilot channel by said related serving station.
33. The process according to claim 28, wherein said step of determining, for every cell, the interference to which the cells had been subjected is realised by establishing, for each serving station, total power on a whole respective working band.
34. The process according to claim 28, wherein said step of determining, for every cell, the interference to which the cells had been subjected comprising the steps of:
establishing, for the power that can be delivered by said user terminals of said set, a maximum allowable value; and
taking into account, in regard to said interference, only the user terminals of said set that transmit at a power that is lower than, or at most equal to said maximum allowable value.
35. A process for implementing a communications network, comprising a step of materially implementing the communications network planned with the process according to claim 20.
36. A system for planning communications networks, comprising a configuration capable of performing the process according to claim 20.
37. A communications network, comprising a network realized in compliance with the planning performed with the process according to claim 20.
38. A computer program product that can be loaded in the memory of at least one processor and comprising portions of software code capable of performing the process according to claim 20.

The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.

1. A mobile station device comprising:
a preamble generator for generating a preamble signal to be transmitted in an intermittent pattern that reduces interference on other reverse link channels during a preamble interval prior to a transmission interval of a reverse access channel message; and
a transmitter for spreading and modulating the preamble signal received from the preamble generator and transmitting it to a base station,
wherein the preamble interval includes a non-transmission interval, and
wherein the intermittent pattern is determined using T=N(P+B)+A,
where T indicates a total duration of the preamble interval, N is an integer greater than or equal to zero, P indicates a duration of a transmission interval, B indicates a duration of the non-transmission interval, and A indicates a duration of a final transmission interval before the transmission interval of the reverse access channel message.
2. The mobile station device as claimed in claim 1, wherein the preamble generator comprises:
a generator for generating a reverse pilot signal;
an amplifier for amplifying the reverse pilot signal received from the generator to a predetermined strength; and
a gating controller for intermittently transmitting the reverse pilot signal amplified at the amplifier.
3. The mobile station device as claimed in claim 1, wherein the preamble interval comprises a repeating cycle of a preamble transmission interval and a preamble non-transmission interval, and wherein the preamble generator generates the preamble signal during the preamble transmission interval.
4. The mobile station device as claimed in claim 3, wherein the preamble generator generates the preamble signal in the preamble transmission interval just prior to the transmission interval of the access channel message, the preamble transmission being provided during an ending part of the preamble interval.
5. The mobile station device as claimed in claim 3, wherein the preamble generator generates the preamble signal using transmission power increased by a predetermined level.
6. The mobile station device as claimed in claim 3, wherein the preamble generator interrupts generation of the preamble signal upon receiving sync acquisition information from the base station.
7. The mobile station device as claimed in claim 6, wherein the sync acquisition information is non-coded data.
8. The mobile station device as claimed in claim 3, wherein the mobile station shortens the preamble interval and immediately transmits the access channel message, upon receiving sync acquisition information from the base station.
9. The mobile station device as claimed in claim 3, wherein the preamble generator generates the preamble signal with transmission power increased by a predetermined level during a next preamble transmission interval, upon failure to receive sync acquisition information in the preamble non-transmission interval.
10. The mobile station device as claimed in claim 3, wherein the mobile station generates the preamble signal during the preamble transmission interval that is exclusively assigned to the mobile station.
11. The mobile station device as claimed in claim 1, wherein the preamble generator generates the preamble signal during a predefined part of the preamble interval.
12. The mobile station device as claimed in claim 1, wherein the preamble generator generates the preamble signal during predefined beginning and ending parts of the preamble interval.
13. The mobile station device as claimed in claim 1, wherein the power level of the preamble signal is higher than a reverse pilot channel.
14. The mobile station device as claimed in claim 1, wherein the preamble signal is a transmission of a reverse pilot channel at an increased power level.
15. The mobile station device as claimed in claim 1, wherein the preamble interval includes a plurality of transmission intervals and a plurality of non-transmission intervals.
16. A transmitting method at a mobile station comprising the steps of:
generating a preamble signal to be transmitted intermittently by a transmitter in an intermittent pattern that reduces interference on other reverse link channels during a preamble interval prior to a transmission interval of a reverse access channel message; and
spreading and modulating the preamble signal received from the preamble generator and transmitting it to a base station,
wherein the preamble interval includes a non-transmission interval, and
wherein the intermittent pattern is determined using T=N(P+B)+A,
where T indicates a total duration of the preamble interval, N is an integer greater than or equal to zero, P indicates a duration of a transmission interval, B indicates a duration of the non-transmission interval, and A indicates a duration of a final transmission interval before the transmission interval of the reverse access channel message.
17. The method as claimed in claim 16, wherein the preamble signal generating step comprises the substeps of:
generating a reverse pilot signal;
amplifying the reverse pilot signal to a predetermined strength; and
intermittently transmitting the amplified reverse pilot signal.
18. The method as claimed in claim 16, wherein the preamble interval comprises a repeating cycle of a preamble transmission interval and a preamble non-transmission interval, the preamble signal being generated during the preamble transmission interval.
19. The method as claimed in claim 18, wherein the preamble signal is generated in the preamble transmission interval just prior to the transmission interval of the access channel message, the preamble transmission being provided during an ending part of the preamble interval.
20. The method as claimed in claim 18, wherein the preamble signal is generated with transmission power increased by a predetermined level.
21. The method as claimed in claim 18, wherein the preamble signal generation stops upon receipt of sync acquisition information from the base station.
22. The method as claimed in claim 21, wherein the sync acquisition information is non-coded data.
23. The method as claimed in claim 18, wherein the mobile station shortens the preamble interval and immediately transmits the access channel message, upon receiving sync acquisition information from the base station.
24. The method as claimed in claim 18, wherein the preamble signal is generated with transmission power increased by a predetermined level during a next preamble transmission interval, upon failure to receive sync acquisition information in the preamble non-transmission interval.
25. The method as claimed in claim 18, wherein the preamble signal is generated during the preamble transmission interval exclusively assigned to a specified mobile station.
26. The method as claimed in claim 16, wherein the preamble signal is generated during a predefined part of the preamble interval.
27. The method as claimed in claim 16, wherein the preamble signal is generated during predefined beginning and ending parts of the preamble interval.
28. The method as claimed in claim 16, wherein the power level of the preamble signal is higher than a reverse pilot channel.
29. The method as claimed in claim 16, wherein the preamble signal is a transmission of a reverse pilot channel at an increased power level.
30. The method as claimed in claim 16, wherein the preamble interval includes a plurality of transmission intervals and a plurality of non-transmission intervals.
31. A mobile station device comprising:
a preamble generator for generating a preamble signal to be transmitted intermittently during a preamble interval prior to a transmission interval of a reverse access channel message, using a plurality of transmission intervals and at least one non-transmission interval, said intervals being determined by a base station to reduce interference on other reverse link channels; and
a transmitter for spreading and modulating the preamble signal received from the preamble generator and intermittently transmitting the spread and modulated preamble signal to the base station,
wherein said intervals are determined using T=N(P+B)+A,
where T indicates a total duration of the preamble interval, N is an integer greater than or equal to zero, P indicates a duration of a transmission interval, B indicates a duration of the non-transmission interval, and A indicates a duration of a final transmission interval before the transmission interval of the reverse access channel message.
32. A transmitting method at a mobile station comprising the steps of:
generating a preamble signal to be transmitted intermittently by a transmitter during a preamble interval prior to a transmission interval of a reverse access channel message, using a plurality of transmission intervals and at least one non-transmission interval, said intervals being determined by a base station to reduce interference on other reverse link channels;
spreading and modulating the preamble signal received from the preamble generator; and
intermittently transmitting the spread and modulated preamble signal to the base station,
wherein said intervals are determined using T=N(P+B)+A,
where T indicates a total duration of the preamble interval, N is an integer greater than or equal to zero, P indicates a duration of a transmission interval, B indicates a duration of the non-transmission interval, and A indicates a duration of a final transmission interval before the transmission interval of the reverse access channel message.