Uplink power control method, device and system

1. An uplink power control method, comprising:

configuring, by a network-side device, an uplink signal of a user equipment with at least two sets of uplink power control parameters; and

notifying the user equipment of the configured respective sets of uplink power control parameters for the user equipment to determine transmit power of the uplink signal;

wherein the uplink signal is a Physical Uplink Shared Channel (PUSCH), or a Physical Uplink Control Channel (PUCCH) or a Sounding Reference Signal (SRS);

when the uplink signal is the PUSCH, and the uplink power control parameters of the uplink signal are target values PO_PUSCH(j) of received power of respective categories of PUSCHs, and wherein j represents a category identifier of PUSCH and takes the values of 0, 1 or 2; and

configuring, by the network-side device, the uplink signal of the user equipment with the at least two sets of uplink power control parameters further comprises:

selecting, by the network-side device, PO_PUSCH(k) among the target values of received power of the respective categories of PUSCHs, wherein k is at least one of 0, 1 and 2; and

for selected PO_PUSCH(k), configuring, by the network-side device, the user equipment with parameter values PO_PUSCH s1(k), . . . , PO_PUSCH_sN(k), wherein N represents the number of sets of uplink power control parameters to be configured.

2. The method according to claim 1 , wherein notifying the user equipment of the configured respective sets of uplink power control parameters particularly comprises:

notifying the user equipment of the configured respective sets of uplink power control parameters in higher-layer signaling.

3. The method according to claim 1 , wherein configuring, by the network-side device, the uplink signal of the user equipment with the at least two sets of uplink power control parameters particularly comprises:

configuring, by the network-side device, the uplink signal of the user equipment with the at least two sets of uplink power control parameters dependent upon interference conditions in uplink sub-frames.

4. The method according to claim 3 , wherein configuring, by the network-side device, the uplink signal of the user equipment with the at least two sets of uplink power control parameters dependent upon the interference conditions in the uplink sub-frames particularly comprises:

configuring, by the network-side device, the uplink signal of the user equipment with at least one set of uplink power control parameters respectively for each sub-frame type of uplink sub-frame, wherein the sub-frame types of uplink sub-frames comprise flexible uplink sub-frames and fixed uplink sub-frames.

5. The method according to claim 4 , further comprising:

transmitting, by the network-side device, a correspondence relationship between sub-frame types and sets of uplink power control parameters to the user equipment.

6. The method according to claim 3 , wherein configuring, by the network-side device, the uplink signal of the user equipment with the at least two sets of uplink power control parameters dependent upon the interference conditions in the uplink sub-frames particularly comprises:

grouping, by the network-side device, uplink sub-frames into at least one set of sub-frames; and

configuring the uplink signal of the user equipment with at least one set of uplink power control parameters respectively for each set of sub-frames as a result of grouping.

7. The method according to claim 6 , wherein grouping, by the network-side device, uplink sub-frames into at least one set of sub-frames particularly comprises:

grouping, by the network-side device, fixed uplink sub-frames into a set of sub-frames and grouping flexible uplink sub-frames into at least one set of sub-frames.

8. The method according to claim 6 , further comprising:

transmitting, by the network-side device, a correspondence relationship between sets of sub-frames and sets of uplink power control parameters to the user equipment.

9. The method according to claim 1 , further comprising:

when the user equipment transmits the uplink signal, selecting, by the network-side device, one of the configured respective sets of uplink power control parameters for the user equipment; and

transmitting a set identifier of the selected set of uplink power control parameters to the user equipment.

10. A network-side device, comprising:

a set of control parameters configuration unit, configured to configure an uplink signal of a user equipment with at least two sets of uplink power control parameters; and

a set of control parameters transmission unit, configured to notify the user equipment of the respective sets of uplink power control parameters configured by the set of control parameters configuration unit, for the user equipment to determine transmit power of the uplink signal;

wherein the uplink signal is a Physical Uplink Shared Channel (PUSCH), or a Physical Uplink Control Channel (PUCCH) or a Sounding Reference Signal (SRS);

when the uplink signal is the PUSCH, and the uplink power control parameters of the uplink signal are target values PO_PUSCH(j) of received power of respective categories of PUSCHs, and wherein j represents a category identifier of PUSCH and takes the values of 0, 1 or 2; and

the set of control parameters configuration unit is configured to select PO_PUSCH(k) among the target values of received power of the respective categories of PUSCHs, wherein k is at least one of 0, 1 and 2; and for selected PO_PUSCH(k), configure the user equipment with parameter values PO_PUSCH s1(k), . . . , PO_PUSCH_sN(k), wherein N represents the number of sets of uplink power control parameters to be configured.

11. An uplink power control method, comprising:

obtaining, by a user equipment, respective sets of uplink power control parameters, corresponding to an uplink signal, notified of by a network-side device;

when the user equipment needs to transmit the uplink signal, selecting, by the user equipment, one of the respective sets of uplink power control parameters obtained by the network-side device; and

determining transmit power of the uplink signal from the selected set of uplink power control parameters;

wherein the uplink signal is a Physical Uplink Shared Channel (PUSCH), or a Physical Uplink Control Channel (PUCCH) or a Sounding Reference Signal (SRS);

when the uplink signal is the PUSCH, and the uplink power control parameters of the uplink signal are target values PO_PUSCH(j) of received power of respective categories of PUSCHs, and wherein j represents a category identifier of PUSCH and takes the values of 0, 1 or 2; and

the respective sets of uplink power control parameters are configured for UE by:

the network-side device selecting PO_PUSCH(k) among the target values of received power of the respective categories of PUSCHs, wherein k is at least one of 0, 1 and 2; and

for selected PO_PUSCH(k), the network-side device configuring the user equipment with parameter values PO_PUSCH s1(k), . . . , PO_PUSCH_sN(k), wherein N represents the number of sets of uplink power control parameters to be configured.

12. The method according to claim 11 , wherein obtaining, by the user equipment, the respective sets of uplink power control parameters, corresponding to the uplink signal, notified of by the network-side device particularly comprises:

obtaining, by the user equipment, the respective sets of uplink power control parameters, corresponding to the uplink signal, notified of by the network-side device in higher-layer signaling.

13. The method according to claim 11 , wherein the selecting, by the user equipment, one of the respective sets of uplink power control parameters obtained by the network-side device particularly comprises:

receiving, by the user equipment, a correspondence relationship, between sub-frame types and sets of uplink power control parameters, transmitted from the network-side device;

determining a sub-frame type of an uplink sub-frame in which the uplink signal is transmitted, wherein the sub-frame types comprise flexible uplink sub-frames and fixed uplink sub-frames; and

selecting, by the user equipment, a set of uplink power control parameters corresponding to the determined sub-frame type among the respective sets of uplink power control parameters notified of by the network-side device according to the received correspondence relationship between sub-frame types and sets of uplink power control parameters.

14. The method according to claim 11 , wherein the selecting, by the user equipment, one of the respective sets of uplink power control parameters notified of by the network-side device particularly comprises:

receiving, by the user equipment, a correspondence relationship, between sets of sub-frames and sets of uplink power control parameters, transmitted from the network-side device;

determining a set of sub-frames to which an uplink sub-frame, in which the uplink signal is transmitted, belongs; and

selecting, by the user equipment, a set of uplink power control parameters corresponding to the determined set of sub-frames among the respective sets of uplink power control parameters notified of by the network-side device according to the received correspondence relationship between sets of sub-frames and sets of uplink power control parameters.

15. The method according to claim 14 , wherein fixed uplink sub-frames correspond to a set of sub-frames, and flexible uplink sub-frames correspond to at least one set of sub-frames.

16. The method according to claim 11 , wherein the selecting, by the user equipment, one of the respective sets of uplink power control parameters obtained by the network-side device particularly comprises:

receiving, by the user equipment, a set identifier of a set of uplink power control parameters transmitted from the network-side device; and

selecting a corresponding set of uplink power control parameters among the respective sets of uplink power control parameters notified of by the network-side device according to the received set identifier.

17. The method according to claim 11 , wherein the uplink signal is a Physical Uplink Shared Channel (PUSCH), or a Physical Uplink Control Channel (PUCCH) or a Sounding Reference Signal (SRS).

18. A user equipment, comprising:

a set of control parameters obtainment unit, configured to obtain respective sets of uplink power control parameters, corresponding to an uplink signal, notified of by a network-side device;

a set of control parameters selection unit, configured to select one of the respective sets of uplink power control parameters obtained by the set of control parameters obtainment unit when the user equipment needs to transmit the uplink signal; and

a transmit power determination unit, configured to determine transmit power of the uplink signal from the set of uplink power control parameters selected by the set of control parameters selection unit;

wherein the uplink signal is a Physical Uplink Shared Channel (PUSCH), or a Physical Uplink Control Channel (PUCCH) or a Sounding Reference Signal (SRS);

when the uplink signal is the PUSCH, and the uplink power control parameters of the uplink signal are target values PO_PUSCH(j) of received power of respective categories of PUSCHs, and wherein j represents a category identifier of PUSCH and takes the values of 0, 1 or 2; and

the respective sets of uplink power control parameters are configured for UE by:

the network-side device selecting PO_PUSCH(k) among the target values of received power of the respective categories of PUSCHs, wherein k is at least one of 0, 1 and 2; and

for selected PO_PUSCH(k), the network-side device configuring the user equipment with parameter values PO_PUSCH s1(k), . . . , PO_PUSCH_sN(k), wherein N represents the number of sets of uplink power control parameters to be configured.