Method and Device for Data Transmission

• US 20140010182A1
• Filed: 07/21/2011
• Published: 01/09/2014
• Est. Priority Date: 12/30/2010
• Status: Active Grant

• Current Assignee: ZTE Corporation
• Original Assignee: ZTE Corporation
• Inventors: Chunli, Liang, Bo, Dai, Bin, Yu, Weiwei, Yang, Yuqiang, Zhang
• Granted Patent: US 9,143,297 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals

Abstract

The present disclosure discloses a method and a device for transmitting data. The method includes: a UE determining, according to a preset rule, whether to transmit PUCCH and/or PUSCH and/or an SRS or not on a last symbol of a current subframe; the UE determining the PUCCH and/or the PUSCH to be transmitted on the current subframe according to availability of the last symbol of the current subframe for transmitting the PUCCH and/or the PUSCH; and the UE transmitting the PUCCH and/or the PUSCH on the current subframe and/or transmitting the SRS on the last symbol of the current subframe. In virtue of the present disclosure, it can be realized that a plurality of types of physical uplink signals/channels are simultaneously transmitted.

Claims

1. A method for transmitting data, comprising:

a user equipment (UE) determining, according to a preset rule, whether to transmit physical uplink control channel (PUCCH) and/or physical uplink shared channel (PUSCH) or a sounding reference signal (SRS) or not on a last symbol of a current subframe;

the UE determining the PUCCH and/or the PUSCH to be transmitted on the current subframe according to availability of the last symbol of the current subframe for transmitting the PUCCH and/or the PUSCH; and

the UE transmitting the PUCCH and/or the PUSCH on the current subframe and/or transmitting the SRS on the last symbol of the current subframe.

2. The method according to claim 1, wherein the UE determining, according to the preset rule, whether to transmit the PUCCH or the PUSCH or the SRS on the last symbol of the current subframe or not comprises:

the UE determining not to transmit the PUSCH on the last symbol of the current subframe when the current subframe is higher-layer configured as a cell-specific SRS subframe for the component carrier on which the PUSCH is transmitted.

3. The method according to claim 1, wherein the UE determining, according to the preset rule, whether to transmit the PUCCH and/or the PUSCH or the SRS or not on the last symbol of the current subframe comprises:

the UE determining not to transmit the PUSCH on the last symbol of the current subframe when the current subframe is higher-layer configured as a cell-specific SRS subframe for the component carrier on which the PUSCH is transmitted and the allocation of the PUSCH partially overlaps with the higher-layer configured cell-specific SRS bandwidth configuration.

4. The method according to claim 1, wherein the UE determining, according to the preset rule, whether to transmit the PUCCH and/or the PUSCH or the SRS or not on the last symbol of the current subframe comprises:

the UE determining not to transmit the PUSCH on the last symbol of the current subframe when the current subframe is higher-layer configured as a cell-specific SRS subframe for the component carrier on which the PUSCH is transmitted or the component carrier other than the PUSCH is transmitted.

5. The method according to claim 1, wherein the UE determining, according to the preset rule, whether to transmit the PUCCH and/or the PUSCH or the SRS or not on the last symbol of the current subframe comprises:

when the PUCCH format is format 1/1a/1b/3, the UE determining not to transmit the PUCCH on the last symbol of the current subframe when the higher-layer configured parameter for simultaneous transmission of ACK/NACK and SRS is TRUE for the UE and when the current subframe is higher-layer configured as a cell-specific SRS subframe for the primary component carrier.

6. The method according to claim 1, wherein the UE determining the PUCCH and/or the PUSCH to be transmitted on the current subframe according to availability of the last symbol of the current subframe for transmitting the PUCCH and/or the PUSCH comprises:

when the last symbol of the current subframe is unable to transmit the PUSCH, the UE setting N_SRS to be 1 when determining the number of time domain symbols occupied by transmitting the PUSCH;

otherwise, the UE setting the N_SRS to be 0, wherein the N_SRS is a variable representing whether the current subframe needs to transmit the SRS; and

when the last symbol of the current subframe is unable to transmit the PUCCH format 1/1a/1b/3, the UE transmitting the PUCCH on the current subframe with a shortened format, otherwise, transmitting the PUCCH with a normal format.

7. The method according to claim 6, wherein the UE determining the number of the time domain symbols occupied by transmitting the PUSCH by a formula as follows to calculate:

N_symb^{PUSCH-initial}=(2·

(N_symb^UL−

1)−

N_SRS), where N_symb^{PUSCH-initial} is the number of the time domain symbols occupied by transmitting the PUSCH, and N_symb^UL is the number of symbols capable of being transmitted in one time slot.

8. The method according to claim 1, wherein the UE determining, according to the preset rule, whether to transmit the PUCCH and/or the PUSCH or the SRSs or not on the last symbol of the current subframe comprises:

the UE transmitting the SRS with a high priority on the last symbol of the current subframe according to a preset priority rule when the UE simultaneously transmits SRSs on a plurality of uplink component carriers on the current subframe, and no PUSCH and/or PUCCH of the UE is transmitted on the last symbol of the current subframe.

9. The method according to claim 1, wherein the UE determining, according to the preset rule, whether to transmit the PUCCH and/or the PUSCH or the SRS or not on the last symbol of the current subframe comprises:

the UE transmitting one SRS with a highest priority on the last symbol of the current subframe according to a preset priority rule when the UE simultaneously transmits SRSs on a plurality of uplink component carriers on the current subframe, and no PUSCH and/or PUCCH of the UE is transmitted on the last symbol of the current subframe in a Long Term Evolution Advanced (LTE-A) system.

10. The method according to claim 1, wherein the UE determining, according to the preset rule, whether to transmit the PUCCH and/or the PUSCH or the SRS or not on the last symbol of the current subframe comprises:

when the UE simultaneously transmits SRSs on a plurality of uplink and downlink component carriers on the current subframe, and no PUSCH and/or PUCCH of the UE is transmitted on the last symbol of the current subframe, the UE transmitting one SRS with a highest priority on the last symbol of the current subframe according to a preset priority rule;

when the UE is configured by a higher-layer signaling to allow simultaneously transmitting n SRSs on the last symbol of the subframe, the UE transmitting the n SRSs with a high priority on the last symbol of the current subframe according to a preset priority rule, wherein n is an integer greater than 1; and

alternatively,

when the UE is configured by the higher-layer signaling to not allow simultaneously transmitting the n SRSs on the last symbol of the subframe, the UE transmitting one SRS with a highest priority on the last symbol of the current subframe according to a preset priority rule.

11. The method according to claim 10, wherein the UE is configured by the higher-layer signaling to allow simultaneously transmitting the n SRSs on the last symbol of the subframe comprises one of the following:

the higher-layer signaling being a higher-layer signaling newly added to a Long Term Evolution Advanced (LTE-A) system, or the higher-layer signaling being a higher-layer signaling that has been defined by the LTE-A system and is configured to instruct to allow simultaneously transmitting a PUSCH and a PUCCH;

instructing to allow the UE to simultaneously transmit n SRSs by setting a higher-layer signaling, which is configured to instruct to allow simultaneously transmitting the PUSCH and the PUCCH, to be TRUE or ON; and

instructing that the UE can only transmit one SRS by setting a higher-layer signaling, which is configured to instruct to allow simultaneously transmitting the PUSCH and the PUCCH, to be FALSE or OFF.

12. The method according to claim 8, wherein the preset priority rule comprises:

setting a priority of an uplink component carrier to be a priority of transmitting an SRS on a corresponding component carrier.

13. The method according to claim 8, wherein the preset priority rule comprises at least one of the following:

setting a priority of an aperiodic SRS to be higher than a priority of a periodic SRS;

setting a priority of an SRS on a primary uplink component carrier to be higher than a priority of other component carriers on the primary uplink component;

setting a priority of an SRS on a component carrier, on which a PUSCH with UCI is simultaneously transmitted, to be higher than a priority of an SRS on a component carrier on which a PUSCH without UCI is simultaneously transmitted; and

setting a priority of an SRS on a component carrier, on which a PUSCH is simultaneously transmitted, to be higher than a priority of an SRS on a component carrier on which no PUSCH is simultaneously transmitted;

if priorities of SRSs on a plurality of component carriers are still the same after the above priority rules are applied, priorities of the uplink component carriers are set to be priorities of SRSs on a plurality of corresponding component carriers.

14. The method according to claim 1, wherein the UE determining, according to the preset rule, whether to transmit the PUCCH and/or the PUSCH or the SRS or not on the last symbol of the current subframe comprises:

the UE determining to transmit the PUCCH and not to transmit an aperiodic SRS on the current subframe when the UE simultaneously transmits PUCCH format 2/2a/2b and the periodic SRS on the current subframe.

15. The method according to claim 1, wherein the UE determining, according to the preset rule, whether to transmit the PUCCH and/or the PUSCH or the SRS or not on the last symbol of the current subframe comprises:

the UE determining to transmit the PUCCH and not to transmit an aperiodic SRS on the current subframe when the UE simultaneously transmits PUCCH format 2/2a/2b multiplexed with an ACK/NACK and the aperiodic SRS on the current subframe.

16. The method according to claim 1, wherein the UE determining, according to the preset rule, whether to transmit the PUCCH and/or the PUSCH or the SRS or not on the last symbol of the current subframe comprises:

the UE determining not to transmit the PUCCH and to transmit an aperiodic SRS on the current subframe when the UE simultaneously transmits a PUCCH format 2 without ACK/NACK and the aperiodic SRS on the current subframe.

17. The method according to claim 1, wherein the UE determining, according to the preset rule, whether to transmit the PUCCH and/or the PUSCH or the SRS or not on the last symbol of the current subframe comprises:

the UE determining to transmit the PUSCH or the PUCCH on the current subframe and not to transmit the SRS on the last symbol of the current subframe when the UE simultaneously transmits PUSCH or PUCCH format 1/1a/1b/3 and the SRS on the current subframe and the last symbol of the current subframe is configured to transmit the PUSCH or the PUCCH format 1/1a/1b/3 of the UE.

18. The method according to claim 1, wherein the UE determining, according to the preset rule, whether to transmit the PUCCH and/or the PUSCH or the SRS or not on the last symbol of the current subframe comprises:

the UE determining to transmit the PUSCH or the PUCCH on the symbols other than the last symbol of the current subframe, and to transmit the SRS on the last symbol of the current subframe, when the UE simultaneously transmits PUSCH or PUCCH format 1/1a/1b/3 and the SRS on the current subframe and the last symbol of the current subframe is not configured to transmit the PUSCH or the format 1/1a/1b/3 of the PUCCH of the UE.

19. The method according to claim 1, wherein the UE determining, according to the preset rule, whether to transmit the PUCCH and/or the PUSCH or the SRS or not on the last symbol of the current subframe comprises:

when the UE simultaneously transmits a PUCCH, a PUSCH and the SRS on the current subframe, and a higher-layer signaling configured to instruct to allow simultaneously transmitting the PUSCH and the PUCCH is TRUE or ON,

the UE firstly determining transmission of the PUCCH and the SRS in accordance with a processing method of transmitting the PUCCH and the SRS on the same subframe;

if the last symbol of the subframe still needs to transmit the SRS after the above processing, further determining transmission of the PUSCH and the SRS in accordance with a processing method of transmitting the PUSCH and the SRS on the same subframe.

20. The method according to claim 19, wherein determining transmission of the PUSCH and the SRS in accordance with the processing method of transmitting the PUSCH and the SRS on the same subframe comprises:

the UE determining to transmit the PUCCH and not to transmit a periodic SRS on the current subframe when the UE simultaneously transmits PUCCH format 2/2a/2b and the periodic SRS on the current subframe;

the UE determining to transmit the PUCCH and not to transmit an aperiodic SRS on the current subframe when the UE simultaneously transmits the PUCCH format 2/2a/2b multiplexed with ACK/NACK and the aperiodic SRS on the current subframe;

the UE determining not to transmit the PUCCH, and to transmit the aperiodic SRS on the current subframe when the UE simultaneously transmits a PUCCH format 2 without ACK/NACK and the aperiodic SRS on the current subframe;

the UE determining to transmit the PUCCH on the current subframe, and not to transmit the SRS on the last symbol of the current subframe when the UE simultaneously transmits the PUCCH format 1/1a/1b/3 and the SRS on the current subframe and the last symbol of the current subframe is configured to transmit PUCCH format 1/1a/1b/3 of the UE; and

the UE determining to transmit the PUCCH on a symbol other than the last symbol of the current subframe, and to transmit the SRS on the last symbol of the current subframe when the UE simultaneously transmits the PUCCH format 1/1a/1b/3 and the SRS on the current subframe and the last symbol of the current subframe is not configured to transmit the PUCCH format 1/1a/1b/3 of the UE.

21. The method according to claim 1, wherein the UE determining, according to the preset rule, whether to transmit the PUCCH and/or the PUSCH or the SRS or not on the last symbol of the current subframe comprises:

when the UE simultaneously transmits the PUCCH, the PUSCH and the SRS on the current subframe and the higher-layer signaling that is configured to instruct to allow simultaneously transmitting the PUSCH and the PUCCH is FALSE or OFF,

the UE firstly transmitting UCI information carried by the PUCCH on the PUSCH; and

the UE determining transmission of the PUSCH and the SRS in accordance with a processing method of transmitting the PUSCH and the SRS on the same subframe.

22. The method according to claim 19, wherein the UE determining transmission of the PUSCH and the SRS in accordance with the processing method of transmitting the PUSCH and the SRS on the same subframe comprises:

the UE determining to transmit the PUSCH on the current subframe and not to transmit the SRS on the last symbol of the current subframe, when the UE simultaneously transmits the PUSCH and the SRS on the current subframe and when the last symbol of the current subframe is configured to transmit the PUSCH of the UE; and

the UE determining to transmit the PUSCH on a symbol other than the last symbol of the current subframe and to transmit the SRS on the last symbol of the current subframe, when the UE simultaneously transmits the PUSCH and the SRS on the current subframe and when the last symbol of the current subframe is not configured to transmit the PUSCH of the UE.

24. The method according to claim 9, wherein the preset priority rule comprises:

setting a priority of an uplink component carrier to be a priority of transmitting an SRS on a corresponding component carrier.

25. The method according to claim 10, wherein the preset priority rule comprises:

setting a priority of an uplink component carrier to be a priority of transmitting an SRS on a corresponding component carrier.

26. The method according to claim 11, wherein the preset priority rule comprises:

setting a priority of an uplink component carrier to be a priority of transmitting an SRS on a corresponding component carrier.

27. The method according to claim 9, wherein the preset priority rule comprises at least one of the following:

setting a priority of an aperiodic SRS to be higher than a priority of a periodic SRS;

setting a priority of an SRS on a primary uplink component carrier to be higher than a priority of other component carriers on the primary uplink component;

setting a priority of an SRS on a component carrier, on which a PUSCH with UCI is simultaneously transmitted, to be higher than a priority of an SRS on a component carrier on which a PUSCH without UCI is simultaneously transmitted; and

setting a priority of an SRS on a component carrier, on which a PUSCH is simultaneously transmitted, to be higher than a priority of an SRS on a component carrier on which no PUSCH is simultaneously transmitted;

if priorities of SRSs on a plurality of component carriers are still the same after the above priority rules are applied, priorities of the uplink component carriers are set to be priorities of SRSs on a plurality of corresponding component carriers.

28. The method according to claim 10, wherein the preset priority rule comprises at least one of the following:

setting a priority of an aperiodic SRS to be higher than a priority of a periodic SRS;

setting a priority of an SRS on a primary uplink component carrier to be higher than a priority of other component carriers on the primary uplink component;

setting a priority of an SRS on a component carrier, on which a PUSCH with UCI is simultaneously transmitted, to be higher than a priority of an SRS on a component carrier on which a PUSCH without UCI is simultaneously transmitted; and

setting a priority of an SRS on a component carrier, on which a PUSCH is simultaneously transmitted, to be higher than a priority of an SRS on a component carrier on which no PUSCH is simultaneously transmitted;

if priorities of SRSs on a plurality of component carriers are still the same after the above priority rules are applied, priorities of the uplink component carriers are set to be priorities of SRSs on a plurality of corresponding component carriers.

29. The method according to claim 11, wherein the preset priority rule comprises at least one of the following:

setting a priority of an aperiodic SRS to be higher than a priority of a periodic SRS;

setting a priority of an SRS on a primary uplink component carrier to be higher than a priority of other component carriers on the primary uplink component;

setting a priority of an SRS on a component carrier, on which a PUSCH with UCI is simultaneously transmitted, to be higher than a priority of an SRS on a component carrier on which a PUSCH without UCI is simultaneously transmitted; and

setting a priority of an SRS on a component carrier, on which a PUSCH is simultaneously transmitted, to be higher than a priority of an SRS on a component carrier on which no PUSCH is simultaneously transmitted;

if priorities of SRSs on a plurality of component carriers are still the same after the above priority rules are applied, priorities of the uplink component carriers are set to be priorities of SRSs on a plurality of corresponding component carriers.

30. The method according to claim 21, wherein the UE determining transmission of the PUSCH and the SRS in accordance with the processing method of transmitting the PUSCH and the SRS on the same subframe comprises:

the UE determining to transmit the PUSCH on the current subframe and not to transmit the SRS on the last symbol of the current subframe, when the UE simultaneously transmits the PUSCH and the SRS on the current subframe and when the last symbol of the current subframe is configured to transmit the PUSCH of the UE; and

the UE determining to transmit the PUSCH on a symbol other than the last symbol of the current subframe and to transmit the SRS on the last symbol of the current subframe, when the UE simultaneously transmits the PUSCH and the SRS on the current subframe and when the last symbol of the current subframe is not configured to transmit the PUSCH of the UE.

23. A device for transmitting data, comprising

a first determining module, configured to determine, according to a preset rule, whether to transmit physical uplink control channel (PUCCH) and/or physical uplink shared channel (PUSCH) or a sounding reference signal (SRS) or not on a last symbol of a current subframe;

a second determining module, configured to determine the PUCCH and/or the PUSCH to be transmitted on the current subframe according to availability of the last symbol of the current subframe for transmitting the PUCCH and/or the PUSCH; and

a transmitting module, configured to transmit the PUCCH and/or the PUSCH on the current subframe and/or to transmit the SRS on the last symbol of the current subframe.