Wireless communications system with cycling of unique cell bit sequences in station communications
View Patent ↗A wireless communication system ( 10 ). The system comprises transmitter circuitry (BST 1 ) comprising circuitry for transmitting a plurality of frames to a receiver in a first cell (Cell 1 ). Each of the plurality of frames comprises a bit group ( 22 ), and the bit group uniquely distinguishes the first cell from a second cell (Cell 2 ) adjacent the first cell. The transmitter circuitry further comprises circuitry ( 54 ) for inserting a bit sequence into the bit group. The bit sequence is selected from a plurality of bit sequences (S 1 -S K ) such that successive transmissions by the transmitter circuitry comprise a cycle of successive ones of the plurality of bit sequences.
1. A wireless communication system, comprising:
a transmitter comprising circuitry for transmitting a plurality of frame time slots to a receiver in a first cell;
wherein each of the plurality of frame time slots comprises a bit group;
wherein the transmitter further comprises circuitry for inserting a bit sequence into the bit group, the bit sequence being selected from a plurality of bit sequences;
at least two different of said bit sequences are used in at least one pair of successive transmissions by the transmitter; and
wherein a cyclic shift of the selected bit sequence is applied in each of the transmissions and the bit sequences and the cyclic shifts are communicated to said receiver.
2. The system of claim 1 :
wherein the bit group uniquely distinguishes the first cell from a second cell adjacent the first cell.
3. The system of claim 1 wherein the transmitter comprises CDMA transmitter circuitry.
4. The system of claim 1 wherein the transmitter comprises TDMA transmitter circuitry.
5. A wireless communication system, comprising:
a receiver comprising circuitry for receiving a plurality of frame time slots from a transmitter in a first cell;
wherein each of the plurality of flame time slots comprises a bit group having a cyclicly shifted bit sequence;
wherein the bit sequence is selected from a plurality of bit sequences such that at least two different bit sequences are used in at least one pair of transmissions by the transmitter received by said receiver, a cyclic shift of the selected bit sequences in at least one of said transmissions is communicated to said receiver; and
wherein the receiver further comprises circuitry for performing channel estimation with said bit sequences.
6. The system of claim 5 wherein the bit group uniquely distinguishes the first cell from a second cell adjacent the first cell.
7. A method of operating a wireless communication system, comprising the steps of:
transmitting a plurality of frame time slots to a receiver in a first cell, each frame time slot comprising a bit group having a bit sequence inserted therein, at least two different bit sequences being used in at least one pair of successive transmissions, a cyclic shift of the selected bit sequence being applied in each of the transmissions; and
communicating the cyclic shifts and bit sequences to said receiver.
8. The method of claim 7 :
wherein the bit group uniquely distinguishes the first cell from a second cell adjacent the first cell.
9. The method of claim 7 wherein the transmitting is accomplished using CDMA transmitter circuitry.
10. The method of claim 7 wherein the transmitting is accomplished using TDMA transmitter circuitry.
11. The method of claim 7 and further comprising the steps of:
receiving the plurality of time slots at a receiver station in the first cell; and
performing channel estimation using said bit sequences.