1. A method for a base station to receive a reference signal sequence from one or more devices within a cell of the base station in a multiple cell environment, the method comprising:
providing the one or more devices with information about the reference signal sequence, wherein the reference signal sequence is defined by a cyclic shift of a base sequence, wherein the base sequence is one of a plurality of base sequences divided into groups, wherein each of the groups comprises at least one base sequence for each length (N), and wherein each length (N) corresponds to (12*n), (n) being a positive integer; and
receiving the reference signal sequence from one or more of the one or more devices.
2. The method of claim 1, wherein each of the groups comprises one base sequence of each length (N) when (n) is equal to or greater than 1 and equal to or less than 5, and two base sequences of each length (N) when (n) is equal to or greater than 6.
3. The method of claim 1, wherein a number of the groups is 30.
4. The method of claim 1, wherein the base sequence having a length (N) for cases where (n) is equal to or greater than 3 is given by using a Zadoff Chu (ZC) sequence.
5. The method of claim 1, wherein the base sequence is given by using a Zadoff-Chu (ZC) sequence having a length (NZCRS), the length (NZCRS) being given by a prime number length such that the length (NZCRS) is less than the length (N), and
wherein a front part of the base sequence having the length (NZCRS) is from the ZC sequence having the length (NZCRS), and a rear part of the base sequence having a length of (N\u2212NZCRS) is from a front part of the ZC sequence having the length of (N\u2212NZCRS).
6. A base station for receiving a reference signal sequence from one or more devices within a cell of the base station in a multiple cell environment, the base station comprising:
a processor configured to generate information about the reference signal sequence, wherein the reference signal sequence is defined by a cyclic shift of a base sequence, wherein the base sequence is one of a plurality of base sequences divided into groups, wherein each of the groups comprises at least one base sequence for each length (N), and wherein each length (N) corresponds to (12*n), (n) being a positive integer; and
a transceiver configured to provide the one or more devices with the information, and to receive the reference signal sequence from one or more of the one or more devices.
7. The base station of claim 6, wherein each of the groups comprises one base sequence of each length (N) when (n) is equal to or greater than 1 and equal to or less than 5, and two base sequences of each length (N) when (n) is equal to or greater than 6.
8. The base station of claim 6, wherein a number of the groups is 30.
9. The base station of claim 6, wherein the base sequence having a length (N) for cases where (n) is equal to or greater than 3 is given by using a Zadoff Chu (ZC) sequence.
10. The base station of claim 6, wherein the base sequence is given by using a Zadoff-Chu (ZC) sequence having a length (NZCRS), the length (NZCRS) being given by a prime number length such that the length (NZCRS) is less than the length (N), and wherein a front part of the base sequence having the length (NZCRS) is from the ZC sequence having the length (NZCRS), and a rear part of the base sequence having a length of (N\u2212NZCRS) is from a front part of the ZC sequence having the length of (N\u2212NZCRS).
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 workpiece changer for the transfer of workpieces or workpiece palettes between a set-up station in front of a machining machine and a workpiece table of such machining machine, comprising a gripper means for taking up and putting down workpieces or workpiece palettes, a rotary drive for swiveling the gripper means about a vertical axis, and a lifting means for lifting and lowering the gripper means, and further comprising a linear drive for shifting the gripper means between a first position at the set-up station and a second position at the workpiece table.
2. The workpiece changer as set forth in claim 1, wherein the gripper means is arranged on a horizontally movable slide or carriage which is provided with the lifting means and the rotary drive.
3. The workpiece changer as set forth in claim 2 wherein the slide or carriage runs on a lateral guide means.
4. The workpiece changer as set forth in claim 1, wherein the gripper means possesses a single gripper or a double gripper having two grippers pointing in opposite directions.
5. The workpiece changer as set forth in claim 4, wherein the gripper or grippers is or are designed to fit underneath a workpiece or a workpiece palette and preferably possess two gripping andor lifting arms.
6. The workpiece changer as set forth in claim 4, wherein the gripper or grippers possess two lifting arms able to be shifted toward each other like gripping jaws.
7. The workpiece changer as set forth in claim 1, designed as a self-contained unit adapted to be positioned in front of a machining machine.
8. The workpiece changer as set forth in claim 1, comprising a storage arrangement to the side of the linear transfer path of the gripper means for workpieces andor workpiece palettes the gripper means andor at least a portion of the storage arrangement being provided with a shifting drive for motion perpendicular to the linear path of movement of the gripper means between the workpiece table and the set-up station.
9. The workpiece changer as set forth in claim 7, wherein the storage arrangement comprises at least one change station for the transfer and acceptance of workpieces or workpiece palettes by the gripper means and wherein a conveyor means is provided for the supply and removal of palettes andor workpiece receiving means to and from the change station.
10. The workpiece changer as set forth in claim 9, wherein the said conveyor means is in the form of an endless conveyor means and more particularly as a chain conveyor or turntable or as a linear conveyor.
11. The workpiece changer as set forth in claim 9, wherein the conveyor means as a whole or its palettes andor workpiece receiving means are provided with a shifting drive into the change station andor a lifting drive.