System and method for improved control channel transmit diversity

1. A method for providing transmit diversity in wireless network communications, including:

receiving an indication of a slot structure, the slot structure identifying at least a first location of a reference signal within a slot;

transmitting a first reference signal within a first slot using a first antenna, a location of the first reference signal within the first slot being determined by the slot structure; and

transmitting a second reference signal within the first slot using a second antenna, a location of the second reference signal within the first slot being determined by the slot structure or being equal to the location of the first reference signal within the slot,

wherein the slot structure identifies a second location of a reference signal within the slot structure, the second location being offset from the first location, and including transmitting a third reference signal within the first slot at the second location on the first antenna.

2. The method of claim 1 , wherein the slot structure identifies a plurality of reference signal locations in the slot.

3. The method of claim 1 , wherein the slot structure is one of a plurality of slot structures, at least two of the plurality of slot structures having distinct reference signal locations.

4. The method of claim 1 , wherein receiving an indication of a slot structure includes receiving a cqi-pucch resource index.

5. The method of claim 1 , including transmitting a plurality of reference signals in a second slot, the second slot having a slot structure with a different configuration from the first slot structure, the first and second slot being transmitted in a first subframe.

6. A method for providing transmit diversity in wireless network communications, including: receiving an indication of a slot structure, the slot structure identifying at least a location of a first reference signal and a location of a second reference signal;

transmitting a first and a second symbol within a first slot using a first antenna and a first orthogonal resource, the second symbol being transmitted after the first symbol;

transforming the first and second symbols to form a first transformed symbol and a second transformed symbol;

transmitting the transformed first symbol and the transformed second symbol within the first slot using a second antenna and the first orthogonal resource, the first transformed symbol being transmitted after the second transformed symbol;

transmitting a first reference signal within the first slot at a location determined by the slot structure, the first reference signal being transmitted using a first antenna; and

transmitting a second reference signal within the first slot at a second location determined by the slot structure, the second reference signal being transmitted using a second antenna.

7. The method of claim 6 , including:

transmitting a third symbol within the first slot using the first antenna and the first orthogonal resource; and

transmitting the third symbol within the first slot using the second antenna and a second orthogonal resource.

8. The method of claim 6 , wherein transforming the first and second symbols to form a first transformed symbol and a second transformed symbol includes at least one of negating at least one of the first and second symbol, complex conjugation of at least one of the first and second symbol, and leaving at least one of the first and second symbol unchanged.

9. The method of claim 6 , wherein transforming the first and second symbols to form a first transformed symbol and a second transformed symbol includes:

using a first transformation to transform the first symbol; and

using a second transformation to transform the second symbol, the first transformation being different from the second transformation.

10. The method of claim 6 , wherein receiving an indication of a slot structure includes receiving a cqi-pucch resource index.

11. A method for providing transmit diversity in wireless network communications, including:

receiving an indication of a Physical Uplink Control Channel (PUCCH) timing advance;

transmitting a first reference signal of a PUCCH at a delay relative to downlink frame timing at least partially determined by the PUCCH timing advance;

transmitting a second reference signal of a PUCCH at a delay relative to downlink frame timing at least partially determined by the PUCCH timing advance; and

transmitting a reference signal in a Physical Uplink Shared Channel (PUSCH) at a delay relative to downlink frame timing at least partially determined by a different timing advance than the PUCCH timing advance.

12. A base station, comprising:

a processor, the processor being configured to:

transmit an indication of a slot structure, the slot structure identifying at least a first location of a reference signal within a slot;

receive a first reference signal within a first slot, a location of the first reference signal within the first slot being determined by the slot structure; and

receive a second reference signal within the first slot, a location of the second reference signal within the first slot being determined by the slot structure or being equal to the location of the first reference signal within the slot,

wherein the slot structure identifies a second location of a reference signal within the slot structure, the second location being offset from the first location, and including transmitting a third reference signal within the first slot at the second location on the first antenna.

13. A user equipment (UE), comprising:

a processor, the processor being configured to:

receive an indication of a slot structure, the slot structure identifying at least a first location of a reference signal within a slot;

transmit a first reference signal within a first slot using a first antenna, a location of the first reference signal within the first slot being determined by the slot structure; and

transmit a second reference signal within the first slot using a second antenna, a location of the second reference signal within the first slot being determined by the slot structure or being equal to the location of the first reference signal within the slot;

wherein the slot structure identifies a second location of a reference signal within the slot structure, the second location being offset from the first location, and including transmitting a third reference signal within the first slot at the second location on the first antenna.