Granted Patent B2

US 8,848,821 · App. 12/866,031 · Granted Sep 30, 2014

Abstract

Claims (74)

1. A method comprising:

receiving transmissions on a plurality of uplink physical resource blocks;

mapping an acknowledgement or negative acknowledgement for each of the received transmissions to at least one physical resource block on a downlink channel, the downlink channel being in a group selected from a plurality of groups;

wherein the mapping depends on at least one of:

alternating in-phase I channel and quadrature Q channel preferences between the plurality of groups;

power balancing between the plurality of groups; and

path loss of user equipment; and

transmitting the acknowledgement or negative acknowledgement for each of the received transmissions on said downlink channel.

2. The method according to claim 1 , wherein the power balancing between the plurality of groups comprises changing the selection of the groups linearly, until all the physical resource blocks are mapped.

3. The method according to claim 1 , wherein the alternating in-phase I channel and quadrature Q channel preferences between the plurality of groups are further arranged for mapping such that:

a leading sequential set of n indices of linearly increasing sequential indices of the physical resource blocks map to an in-phase I modulation of the downlink channel;

a next subsequent sequential set of n indices of the linearly increasing sequential indices of the physical resource blocks map to a quadrature Q modulation of the downlink channel; and

repeating for each sequential set of n indices of the linearly increasing sequential indices of the physical resource blocks for all the physical resource blocks such that for every sequential pair of sets of n indices, one set of the pair maps to an in-phase I modulation of the downlink channel and the other set of the pair maps to a quadrature modulation of the downlink channel.

4. The method according to claim 1 , wherein the mapping based at least in part on path loss of user equipments further comprises mapping acknowledgements or negative acknowledgements of user equipments with similar path loss in a same group.

5. The method according to claim 1 , wherein the downlink channel comprises a physical hybrid automatic repeat request channel.

6. A computer program product comprising a non-transitory computer-readable medium bearing computer program code embodied therein for use with a computer, the computer program code comprising:

code for receiving transmissions on a plurality of uplink physical resource blocks;

code for mapping an acknowledgement or negative acknowledgement for each of the received transmissions to at least one physical resource block on a downlink channel, the downlink channel being in a group selected from a plurality of groups;

wherein the mapping depends on at least one of:

alternating in-phase I channel and quadrature Q channel preferences between the plurality of groups;

power balancing between the plurality of groups; and

path loss of user equipment;

and code for transmitting the acknowledgement or negative acknowledgement for each of the received transmissions on said downlink channel.

7. An apparatus comprising:

at least one processor;

at least one memory including computer program code;

the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus to perform at least the following:

receive transmissions on a plurality of uplink physical resource blocks;

map an acknowledgement or negative acknowledgement for each of the received transmissions to at least one physical resource block in a plurality of groups on a downlink channel, the downlink channel being in a group selected from a plurality of groups;

wherein the mapping depends on at least one of:

alternating in-phase I channel and quadrature Q channel preferences between the plurality of groups;

power balancing between the plurality of groups; and

path loss of user equipment;

and

at least one transmitter configured to transmit the acknowledgement or negative acknowledgement for each of the received transmissions on said downlink channel.

8. The apparatus according to claim 7 , wherein the alternating in-phase I channel and quadrature Q channel preferences between the plurality of groups further comprises:

a leading sequential set of n indices of linearly increasing sequential indices of the physical resource blocks mapping to an in-phase I modulation of the downlink channel;

a next subsequent sequential set of n indices of the linearly increasing sequential indices of the physical resource blocks mapping to a quadrature Q modulation of the downlink channel; and

repeating for each sequential set of n indices of the linearly increasing sequential indices of the physical resource blocks for all the physical resource blocks such that for every sequential pair of sets of n indices, one set of the pair mapping to an in-phase I modulation of the downlink channel and the other set of the pair mapping to a quadrature modulation of the downlink channel.

9. The apparatus according to claim 7 , wherein the downlink channel comprises a physical hybrid automatic repeat request channel.

10. The apparatus according to claim 7 , wherein the apparatus is comprised in an access node of a wireless communication network.

11. A method comprising:

providing a transmission on a plurality of uplink physical resource blocks on an uplink channel;

receiving an acknowledgement or negative acknowledgement from a downlink channel for each transmission on the uplink channel comprising said plurality of uplink physical resource blocks, the acknowledgement or negative acknowledgement being mapped to at least one physical resource block on the downlink channel, the downlink channel being in a group selected from a plurality of groups, and the mapping depending on at least one of:

alternating in-phase I channel and quadrature Q channel preferences between the plurality of groups;

power balancing between the plurality of groups; and

path loss of user equipment.

12. The method according to claim 11 , wherein the power balancing between the plurality of groups comprises changing the selection of the groups linearly, until all the physical resource blocks are mapped.

13. The method according to claim 11 , wherein the alternating in-phase I channel and quadrature Q channel preferences between the plurality of groups are further arranged for mapping such that:

a leading sequential set of n indices of linearly increasing sequential indices of the physical resource blocks map to an in-phase I modulation of the downlink channel;

a next subsequent sequential set of n indices of the linearly increasing sequential indices of the physical resource blocks map to a quadrature Q modulation of the downlink channel; and

repeating for each sequential set of n indices of the linearly increasing sequential indices of the physical resource blocks for all the physical resource blocks such that for every sequential pair of sets of n indices, one set of the pair maps to an in-phase I modulation of the downlink channel and the other set of the pair maps to a quadrature modulation of the downlink channel.

14. The method according to claim 11 , wherein the downlink channel comprises a physical hybrid automatic repeat request channel.

15. The method according to claim 11 , the method being executed by a terminal.

16. A computer program product comprising a non-transitory computer-readable medium bearing computer program code embodied therein for use with a computer, the computer program code comprising:

code for providing a transmission on a plurality of uplink physical resource blocks on an uplink channel;

code for receiving an acknowledgement or negative acknowledgement from a downlink channel for each transmission on the uplink channel comprising said plurality of uplink physical resource blocks;

the acknowledgement or negative acknowledgement being mapped to at least one physical resource block on the downlink channel, the downlink channel being in a group selected from a plurality of groups, and the mapping depending on at least one of:

alternating in-phase I channel and quadrature Q channel preferences between the plurality of groups;

power balancing between the plurality of groups; and

path loss of user equipment.

17. An apparatus comprising:

at least one transmitter configured to provide a transmission on a plurality of uplink physical resource blocks on an uplink channel;

at least one receiver configured to receive an acknowledgement or negative acknowledgement from a downlink channel for each transmission on the uplink channel comprising said plurality of uplink physical resource blocks;

the acknowledgement or negative acknowledgement being mapped to at least one physical resource block on the downlink channel, the downlink channel being in a group selected from a plurality of groups, and the mapping depending on at least one of:

alternating in-phase I channel and quadrature Q channel preferences between the plurality of groups;

power balancing between the plurality of groups; and

path loss of user equipment.

18. The apparatus according to claim 17 , wherein the alternating in-phase I channel and quadrature Q channel preferences between the plurality of groups further comprising:

a leading sequential set of n indices of linearly increasing sequential indices of the physical resource blocks mapping to an in-phase I modulation of the downlink channel;

a next subsequent sequential set of n indices of the linearly increasing sequential indices of the physical resource blocks mapping to a quadrature Q modulation of the downlink channel;

and the processor is further configured to repeat for each sequential set of n indices of the linearly increasing sequential indices of the physical resource blocks for all the physical resource blocks such that for every sequential pair of sets of n indices, one set of the pair mapping to an in-phase I modulation of the downlink channel and the other set of the pair mapping to a quadrature modulation of the downlink channel.

19. The apparatus according to claim 17 , wherein the downlink channel comprises a physical hybrid automatic repeat request channel.

20. The apparatus according to claim 17 , wherein the apparatus is comprised in a terminal.

Assignments (7)