Orthogonal resource selection transmit diversity and resource assignment
View Patent ↗Methods of allocating orthogonal resources of a wireless communication network to a user equipment (UE) that uses transmit diversity are disclosed. In one or more embodiments, the UE is configured to transmit a reference symbol and a modulated symbol on multiple orthogonal resources on an antenna. The method includes: selecting, by the UE, a first and a second orthogonal resource, respectively, from a plurality of orthogonal resources according to the state of information bits to be communicated by the UE; and transmitting, by the UE, the reference and data symbols on the first and the second orthogonal resource, respectively, on one antenna. The first and the second resource are different for at least one of the states of the information bits. The first and the second resource are both in the same physical resource block.
1. A method for transmitting a plurality of information bits on multiple antennas, the method comprising:
selecting, by a user equipment (UE), a codeword from a plurality of codewords according to a state of the plurality of information bits, the codeword being comprised within a codeword group and comprising at least a first orthogonal resource and a second orthogonal resource from a plurality of orthogonal resources, wherein the plurality of information bits is less than the number of orthogonal resources in the plurality of orthogonal resources, and wherein a first codeword group comprises a first and a second codeword, the first and the second codeword both comprising the first and the second orthogonal resources, the first codeword having a first modulation symbol, and the second codeword having a second modulation symbol;
transmitting, by the UE, a first symbol in a first symbol instant on a first antenna using the first orthogonal resource; and
transmitting, by the UE, a second symbol in the first symbol instant on a second antenna using the second orthogonal resource,
wherein the first and second orthogonal resources are different from each other and the first symbol is either a reference symbol or the first modulation symbol, and wherein the second symbol is either a reference symbol or a third modulation symbol.
2. The method of claim 1 , wherein a number of codeword groups is equal to a number of orthogonal resources in the plurality of orthogonal resources, and the first and second orthogonal resources are both comprised together in the first symbol instant only within codewords of the first codeword group.
3. The method of claim 1 , wherein the second modulation symbol is different than the first modulation symbol.
4. The method of claim 1 , wherein the first codeword group and a second codeword group contain a different number of codewords.
5. The method of claim 1 , wherein the first modulation symbol is one of four values according to quadrature phase shift keying (QPSK) modulation, and each codeword group contains one, two, or four codewords.
6. A user equipment for transmitting a plurality of information bits on multiple antennas, the user equipment comprising:
a processor; and
a wireless network connectivity interface,
wherein the processor and wireless network connectivity interface are configured to:
select a codeword from a plurality of codewords according to a state of the plurality of information bits, the codeword being comprised within a codeword group and comprising at least a first orthogonal resource and a second orthogonal resource from a plurality of orthogonal resources, wherein the plurality of information bits is less than the number of orthogonal resources in the plurality of orthogonal resources, and wherein a first codeword group comprises a first and a second codeword, the first and the second codeword both comprising the first and the second orthogonal resources, the first codeword having a first modulation symbol, and the second codeword having a second modulation symbol;
transmit a first symbol in a first symbol instant on a first antenna using the first orthogonal resource; and
transmit a second symbol in the first symbol instant on a second antenna using the second orthogonal resource,
wherein the first and second orthogonal resources are different from each other and the first symbol is either a reference symbol or the first modulation symbol, and wherein the second symbol is either a reference symbol or a third modulation symbol.
7. The user equipment of claim 6 , wherein a number of codeword groups is equal to a number of orthogonal resources in the plurality of orthogonal resources, and the first and second orthogonal resources are both comprised together in the first symbol instant only within codewords of the first codeword group.
8. The user equipment of claim 6 , wherein the second modulation symbol is different than the first modulation symbol.
9. The user equipment of claim 6 , wherein the first codeword group and a second codeword group contain a different number of codewords.
10. The user equipment of claim 6 , wherein the modulation symbol is one of four values according to quadrature phase shift keying (QPSK) modulation, and each codeword group contains one, two, or four codewords.
11. A method for receiving a plurality of information bits from a device transmitting on multiple antennas, the method comprising:
allocating, by an access node, a plurality of orthogonal resources to the device transmitting on multiple antennas for use in a first symbol instant;
receiving, by the access node, a first symbol using a first orthogonal resource, the first symbol being transmitted in the first symbol instant; and
receiving, by the access node, a second symbol using a second orthogonal resource, the second symbol being transmitted in the first symbol instant,
wherein a codeword comprises at least the first and the second orthogonal resource from the plurality of orthogonal resources, the codeword being formed from a plurality of codewords, each codeword being comprised within a codeword group according to a state of the plurality of information bits, wherein there are fewer information bits than the number of orthogonal resources in the plurality of orthogonal resources, and wherein the first symbol is either a reference symbol or a first modulation symbol, and the second symbol is either a reference symbol or a third modulation symbol.
12. The method of claim 11 , wherein a number of codeword groups is equal to the number of orthogonal resources in the plurality of orthogonal resources, and the first and second orthogonal resource are both comprised together in the first symbol instant only within codewords of a first codeword group.
13. The method of claim 12 , wherein the first codeword group comprises a first and a second codeword, a first and a second codeword both comprise the first and the second orthogonal resources, the first codeword comprises a first modulation symbol, and the second codeword comprises a second modulation symbol.
14. The method of claim 13 , wherein the second modulation symbol is different than the first modulation symbol, the first and a second codeword group contain a different number of codewords, the first and second orthogonal resources are different from each other.
15. The method of claim 14 , wherein the first modulation symbol is one of four values according to QPSK modulation, and each codeword group contains one, two, or four codewords.
16. An access node for receiving a plurality of information bits from a device transmitting on multiple antennas, the access node comprising:
a processor; and
a wireless network connectivity interface,
wherein the processor and wireless network connectivity interface are configured to:
allocate a plurality of orthogonal resources to the device transmitting on multiple antennas for use in a first symbol instant;
receive a first symbol using a first orthogonal resource, the first symbol being transmitted in the first symbol instant; and
receive a second symbol using a second orthogonal resource, the second symbol being transmitted in the first symbol instant,
wherein a codeword comprises at least the first and the second orthogonal resource from the plurality of orthogonal resources, the codeword being formed from a plurality of codewords, each codeword being comprised within a codeword group according to a state of the plurality of information bits, wherein there are fewer information bits than the number of orthogonal resources in the plurality of orthogonal resources, and
wherein the first symbol is either a reference symbol or a first modulation symbol, and the second symbol is either a reference symbol or a third modulation symbol.
17. The access node of claim 16 , wherein a number of codeword groups is equal to the number of orthogonal resources in the plurality of orthogonal resources, and the first and second orthogonal resource are both comprised together in the first symbol instant only within codewords of a first codeword group.
18. The access node of claim 17 , wherein the first codeword group comprises a first and a second codeword, a first and a second codeword both comprise the first and the second orthogonal resources, the first codeword comprises a first modulation symbol, and the second codeword comprises a second modulation symbol.
19. The access node of claim 18 , wherein the second modulation symbol is different than the first modulation symbol, the first and a second codeword group contain a different number of codewords, the first and second orthogonal resources are different from each other.
20. The access node of claim 19 , wherein the first modulation symbol is one of four values according to QPSK modulation, and each codeword group contains one, two, or four codewords.