1. An ink ejection integrated circuit (IC) for a printhead, the IC comprising rows of elongate nozzle arrangements, each nozzle arrangement defining an ink ejection port at one end and having an internal cantilevered actuator anchored at the other end so that the actuator can move to eject ink out though the ink ejection port, wherein the rows are arranged in pairs with the ports of one of the rows being proximally located to the ports of the other row, for each pair.
2. An ink ejection IC as claimed in claim 1, wherein the ports in each row form a straight line and the rows of each pair are staggered with respect to each other.
3. An ink ejection IC as claimed in claim 1, wherein each nozzle arrangement is formed on a substrate assembly defining a plurality of ink supply channels in register with respective ink ejection ports.
4. An ink ejection IC as claimed in claim 3, wherein each actuator passes between a corresponding ink ejection port and ink supply channel.
5. An ink ejection IC as claimed in claim 3, wherein the substrate assembly includes a CMOS drive circuitry layer in electrical communication with each actuator.
6. An ink ejection IC as claimed in claim 1, wherein the rows of each pair share a common dividing wall.
7. An ink ejection IC as claimed in claim 1, wherein each actuator is a thermal bend actuator and includes a heater layer, in turn, including a serpentine heater element in electrical communication with the substrate assembly.
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 of a base station sending downlink control information, comprising the steps of:
configuring downlink control information comprising a resource allocation field indicating a Resource Indication Value (RIV) of a specific range; and
transmitting the downlink control information to a user equipment on a physical downlink control channel (PDCCH),
wherein the RIV of the specific range indicates that the downlink control information comprises configuration information for transmitting an uplink signal.
2. The method of claim 1, wherein the uplink signal is a Sounding Reference Signal (SRS) which is used to measure a state of an uplink channel.
3. The method of claim 2, further comprising the step of aperiodically receiving the SRS from the user equipment.
4. The method of claim 1, wherein the RIV of the specific range allocates resource blocks to the user equipment according to at least one of contiguous resource allocation and non-contiguous resource allocation.
5. The method of claim 1, wherein:
the downlink control information further comprises a redundant bit and a hopping flag, and
the resource allocation field indicates non-contiguous resource allocation of resource blocks to the user equipment by being combined with at least one of the redundant bit and the hopping flag.
6. A method of a user equipment receiving downlink control information, comprising the steps of:
receiving downlink control information, comprising a resource allocation field indicative of a Resource Indication Value (RIV) of a specific range, from a base station on a physical downlink control channel (PDCCH);
analyzing a format of the downlink control information based on the RIV of the specific range; and
decoding the downlink control information according to the analyzed format.
7. The method of claim 6, wherein:
the RIV of the specific range indicates that the downlink control information comprises configuration information for a transmission of an uplink signal, and
the uplink signal is a Sounding Reference Signal (SRS) that is a reference signal for measuring a state of an uplink channel.
8. The method of claim 7, further comprising the step of transmitting the SRS to the base station based on the configuration information.
9. The method of claim 6, wherein the RIV of the specific range allocates resource blocks to the user equipment according to at least one of contiguous resource allocation and non-contiguous resource allocation.
10. The method of claim 6, wherein:
the downlink control information further comprises a redundant bit and a hopping flag, and
the resource allocation field indicates non-contiguous resource allocation of resource blocks to the user equipment by being combined with at least one of the redundant bit and the hopping flag.
11. An apparatus for transmitting downlink control information, comprising:
a downlink control information configuration unit for configuring downlink control information based on a Resource Indication Value (RIV) of a specific range that is indicated by a resource allocation field;
a control channel configuration unit for configuring a physical downlink control channel (PDCCH) on which the downlink control information is to be transmitted; and
a control channel transmission unit for transmitting the downlink control information to a user equipment on the PDCCH,
wherein the downlink control information comprises information indicative of a transmission of an uplink signal by the user equipment.
12. The apparatus of claim 11, wherein the uplink signal is a Sounding Reference Signal (SRS) that is a reference signal for measuring a state of an uplink channel.
13. The apparatus of claim 11, wherein the downlink control information configuration unit changes a format of the downlink control information by mapping the resource allocation field to a specific region of an information bit about the downlink control information and adjusting the selected specific range.
14. The apparatus of claim 11, wherein the RIV of the specific range allocates resource blocks to the user equipment according to at least one of contiguous resource allocation and non-contiguous resource allocation.
15. The apparatus of claim 11, wherein the downlink control information configuration unit configures the downlink control information so that a redundant bit and a hopping flag are further included and indicates non-contiguous resource allocation of resource blocks to the user equipment by combining at least one of the redundant bit and the hopping flag with the resource allocation field.
16. An apparatus for receiving downlink control information, comprising:
a control channel reception unit for receiving downlink control information from a base station on a physical downlink control channel (PDCCH);
a control channel decoding unit for extracting the downlink control information by performing blind decoding on the control channel; and
a downlink control information analysis unit for separating a resource allocation field from a plurality of fields included in the downlink control information, checking a format of the downlink control information using a Resource Indication Value (RIV) indicated by the resource allocation field, and analyzing the downlink control information using an analysis method suitable for the checked format.
17. The apparatus of claim 16, wherein:
the RIV of the specific range indicates that the downlink control information comprises configuration information for transmitting an uplink signal, and
the uplink signal is a Sounding Reference Signal (SRS) that is a reference signal for measuring a state of an uplink channel.
18. The apparatus of claim 17, further comprising a response signal transmission unit for transmitting the SRS to the base station based on the configuration information.
19. The apparatus of claim 16, wherein the RIV of the specific range allocates resource blocks to the user equipment according to at least one of contiguous resource allocation and non-contiguous resource allocation.
20. The apparatus of claim 16, wherein:
the downlink control information further comprises a redundant bit and a hopping flag, and
the resource allocation field indicates non-contiguous resource allocation of resource blocks to the user equipment by being combined with at least one of the redundant bit and the hopping flag.