Method and device for transmitting uplink and downlink configuration information
View Patent ↗Disclosed are an uplink and downlink configuration information transmission method and device. The method comprises: a network device generating DCI containing TDD uplink and downlink configuration information; the network device use one PDCCH or one EPDCCH to bear the DCI containing the TDD uplink and downlink configuration information; and the network device sending the PDCCH or the EPDCCH in at least one subframe in a predetermined subframe set.
1. A method for transmitting uplink-downlink configuration information, the method comprising:
generating, by a network device, Downlink Control Information, DCI, comprising Time Division Duplex, TDD, uplink-downlink configuration information;
using, by the network device, a Physical Downlink Control Channel, PDCCH, or an Enhanced Physical Downlink Control Channel, EPDCCH to carry the DCI comprising the TDD uplink-downlink configuration information; and
transmitting, by the network device, the PDCCH or the EPDCCH in at least one of a predetermined set of sub-frames;
wherein the PDCCH or the EPDCCH refers to a PDCCH or an EPDCCH with a specified logic number or one of a plurality of specified logic numbers, the DCI for indicating the TDD uplink-downlink configuration information is mapped to a N-th PDCCH or EPDCCH position at each CCE aggregation level, where N≤a lowest candidate PDCCH or EPDCCH position, or,
the DCI for indicating the TDD uplink-downlink configuration information is mapped only to a N-th PDCCH or EPDCCH position at a first CCE aggregation level, where N≤candidate PDCCH or EPDCCH positions at the first aggregation level, or
the DCI for indicating the TDD uplink-downlink configuration information is mapped only to a N-th PDCCH or EPDCCH position at a first CCE aggregation level in a first search space, where N≤candidate PDCCH or EPDCCH positions at the first aggregation level.
2. The method of claim 1 , wherein generating, by the network device, the Downlink Control Information, DCI, comprising the Time Division Duplex, TDD, uplink-downlink configuration information comprises:
generating, by the network device, the DCI comprising the TDD uplink-downlink configuration information by indicating the TDD uplink-downlink configuration information in a plurality of bits in the DCI.
3. The method of claim 2 , wherein:
the DCI further comprises X preset bits other than the plurality of bits, wherein the total length, of the X preset bits and the plurality of bits indicating the TDD uplink-downlink configuration information, is equal to the length of any one of the DCI formats 0, 1, 1A, 1B, 1C, 1D, 2, 2A, 2B, 2C, 2D, 3, 3A and 4 supported in the 3GPP E-UTRA, wherein X is greater than or equal to 1; or
the DCI further comprises Y preset bits other than the plurality of bits, wherein the Y preset bits indicating all the information in any one of the DCI formats 0, 1, 1A, 1B, 1C, 1D, 2, 2A, 2B, 2C, 2D, 3, 3A and 4 supported in the 3GPP E-UTRA, wherein Y is greater than or equal to 1; or
the DCI further comprises Z preset bits other than the plurality of bits, wherein the total length, of the Z preset bits and the plurality of bits indicating the TDD uplink-downlink configuration information, is smaller than the length of the shortest one of the DCI formats 0, 1, 1A, 1B, 1C, 1D, 2, 2A, 2B, 2C, 2D, 3, 3A and 4 supported in the 3GPP E-UTRA, wherein Z is greater than or equal to 0.
4. The method of claim 3 , wherein the preset bits comprised in the DCI comprise all-0 preset bits or all-1 preset bits.
5. The method of claim 1 , wherein the set of sub-frames is predetermined by the network device and comprises a M-th sub-frames in every N radio frames, wherein N≥1, and 1≤M≤P, and P represents a number of sub-frames comprised in a radio frame.
6. The method of claim 5 , wherein the method further comprises: transmitting, by the network device, information about the predetermined set of sub-frames to a user equipment in higher-layer signaling.
7. A method for transmitting uplink-downlink configuration information, the method comprising:
detecting, by a user equipment, a Physical Downlink Control Channel, PDCCH, or an Enhanced Physical Downlink Control Channel, EPDCCH, in at least one of a predetermined set of sub-frames, wherein the PDCCH or the EPDCCH carries Downlink Control Information (DCI) comprising Time Division Duplex, TDD, uplink-downlink configuration information; and
obtaining, by the user equipment, the TDD uplink-downlink configuration information from the detected DCI;
wherein the PDCCH or the EPDCCH refers to a PDCCH or an EPDCCH with a specified logic number or one of a plurality of specified logic numbers, the DCI for indicating the TDD uplink-downlink configuration information is mapped to a N-th PDCCH or EPDCCH position at each CCE aggregation level, where N≤a lowest candidate PDCCH or EPDCCH position, or,
the DCI for indicating the TDD uplink-downlink configuration information is mapped only to a N-th PDCCH or EPDCCH position at a first CCE aggregation level, where N≤candidate PDCCH or EPDCCH positions at the first aggregation level, or
the DCI for indicating the TDD uplink-downlink configuration information is mapped only to a N-th PDCCH or EPDCCH position at a first CCE aggregation level in a first search space, where N≤candidate PDCCH or EPDCCH positions at the first aggregation level.
8. The method of claim 7 , wherein the TDD uplink-downlink configuration information is indicated in a plurality of bits in the DCI.
9. The method of claim 8 , wherein:
the DCI further comprises X preset bits other than the plurality of bits, wherein the total length, of the X preset bits and the plurality of bits indicating the TDD uplink-downlink configuration information, is equal to the length of any one of the DCI formats 0, 1, 1A, 1B, 1C, 1D, 2, 2A, 2B, 2C, 2D, 3, 3A and 4 supported in the 3GPP E-UTRA, wherein X is greater than or equal to 1; or
the DCI further comprises Y preset bits other than the plurality of bits, wherein the Y preset bits indicate all the information in any one of the DCI formats 0, 1, 1A, 1B, 1C, 1D, 2, 2A, 2B, 2C, 2D, 3, 3A and 4 supported in the 3GPP E-UTRA, wherein Y is greater than or equal to 1; or
the DCI further comprises Z preset bits other than the plurality of bits, wherein the total length, of the Z preset bits and the plurality of bits indicating the TDD uplink-downlink configuration information, is smaller than the length of the shortest one of the DCI formats 0, 1, 1A, 1B, 1C, 1D, 2, 2A, 2B, 2C, 2D, 3, 3A and 4 supported in the 3GPP E-UTRA, wherein Z is greater than or equal to 1.
10. The method of claim 9 , wherein the preset bits comprised in the DCI comprise all-0 preset bits or all-1 preset bits.
11. The method of claim 7 , wherein the predetermined set of sub-frames comprises a M-th sub-frames in every N radio frames, wherein N≥1, and 1≤M≤P, and P represents a number of sub-frames comprised in a radio frame.
12. The method of claim 11 , wherein the method further comprises: receiving, by the user equipment, information signaled by a network device about the predetermined set of sub-frames to the user equipment in higher-layer signaling.
13. A network device, comprising:
at least a memory, and a processor communicating with the memory;
wherein the memory comprises a generating instruction, a processing instruction, and a transmitting instruction, which can be executed by the processor;
the memory is a nonvolatile computer readable storage medium, and the generating instruction, the processing instruction, and the transmitting instruction are machine readable instructions stored in the memory;
the processor executes the machine readable instructions stored in the memory;
the generating instruction is configured to generate Downlink Control Information, DCI, comprising Time Division Duplex, TDD, uplink-downlink configuration information;
the processing instruction is configured to use a Physical Downlink Control Channel, PDCCH, or an Enhanced Physical Downlink Control Channel, EPDCCH to carry the DCI comprising the TDD uplink-downlink configuration information; and
the transmitting instruction is configured to transmit the PDCCH or the EPDCCH in at least one of a predetermined set of sub-frames; wherein the PDCCH or the EPDCCH refers to a PDCCH or an EPDCCH with a specified logic number or one of a plurality of specified logic numbers, the DCI for indicating the TDD uplink-downlink configuration information is mapped to a N-th PDCCH or EPDCCH position at each CCE aggregation level, where N≤a lowest candidate PDCCH or EPDCCH position, or,
the DCI for indicating the TDD uplink-downlink configuration information is mapped only to a N-th PDCCH or EPDCCH position at a first CCE aggregation level, where N≤candidate PDCCH or EPDCCH positions at the first aggregation level, or
the DCI for indicating the TDD uplink-downlink configuration information is mapped only to a N-th PDCCH or EPDCCH position at a first CCE aggregation level in a first search space, where N≤candidate PDCCH or EPDCCH positions at the first aggregation level.
14. The network device of claim 13 , wherein:
the generating instruction is configured to generate the DCI comprising the TDD uplink-downlink configuration information by indicating the TDD uplink-downlink configuration information in a plurality of bits in the DCI.
15. The network device of claim 14 , wherein the DCI generated by the generating instruction further comprises X preset bits other than the plurality of bits, wherein the total length, of the X preset bits and the plurality of bits indicating the TDD uplink-downlink configuration information, is equal to the length of any one of the DCI formats 0, 1, 1A, 1B, 1C, 1D, 2, 2A, 2B, 2C, 2D, 3, 3A and 4 supported in the 3GPP E-UTRA, wherein X is greater than or equal to 1; or
the DCI generated by the generating instruction further comprises Y preset bits other than the plurality of bits, wherein the Y preset bits indicate all the information in any one of the DCI formats 0, 1, 1A, 1B, 1C, 1D, 2, 2A, 2B, 2C, 2D, 3, 3A and 4 supported in the 3GPP E-UTRA, wherein Y is greater than or equal to 1; or
the DCI generated by the generating instruction further comprises Z preset bits other than the plurality of bits, wherein the total length, of the Z preset bits, and the plurality of bits indicating the TDD uplink-downlink configuration information, is smaller than the length of the shortest one of the DCI formats 0, 1, 1A, 1B, 1C, 1D, 2, 2A, 2B, 2C, 2D, 3, 3A and 4 supported in the 3GPP E-UTRA, wherein Z is greater than or equal to 0.
16. A user equipment, comprising:
at least a memory, and a processor communicating with the memory;
wherein the memory comprises a detecting instruction, and an obtaining instruction, which can be executed by the processor;
the memory is a nonvolatile computer readable storage medium, and the detecting instruction and the obtaining instruction are machine readable instructions stored in the memory;
the processor executes the machine readable instructions stored in the memory;
the detecting instruction is configured to detect a Physical Downlink Control Channel, PDCCH, or an Enhanced Physical Downlink Control Channel, EPDCCH, in at least one of a predetermined set of sub-frames, wherein the PDCCH or the EPDCCH carries Downlink Control Information, DCI, comprising Time Division Duplex, TDD, uplink-downlink configuration information; and
the obtaining instruction is configured to obtain the TDD uplink-downlink configuration information from the detected DCI;
wherein the PDCCH or the EPDCCH refers to a PDCCH or an EPDCCH with a specified logic number or one of a plurality of specified logic numbers, the DCI for indicating the TDD uplink-downlink configuration information is mapped to a N-th PDCCH or EPDCCH position at each CCE aggregation level, where N≤a lowest candidate PDCCH or EPDCCH position, or,
the DCI for indicating the TDD uplink-downlink configuration information is mapped only to a N-th PDCCH or EPDCCH position at a first CCE aggregation level, where N≤candidate PDCCH or EPDCCH positions at the first aggregation level, or
the DCI for indicating the TDD uplink-downlink configuration information is mapped only to a N-th PDCCH or EPDCCH position at a first CCE aggregation level in a first search space, where N≤candidate PDCCH or EPDCCH positions at the first aggregation level.
17. The user equipment of claim 16 , wherein the TDD uplink-downlink configuration information is indicated in a plurality of bits in the DCI.
18. The user equipment of claim 17 , wherein:
the DCI further comprises X preset bits other than the plurality of bits, wherein the total length, of the X preset bits and the plurality of bits indicating the TDD uplink-downlink configuration information, is equal to the length of any one of the DCI formats 0, 1, 1A, 1B, 1C, 1D, 2, 2A, 2B, 2C, 2D, 3, 3A and 4 supported in the 3GPP E-UTRA, wherein X is greater than or equal to 1; or
the DCI further comprises Y preset bits other than the plurality of bits, wherein the Y preset bits indicate all the information in any one of the DCI formats 0, 1, 1A, 1B, 1C, 1D, 2, 2A, 2B, 2C, 2D, 3, 3A and 4 supported in the 3GPP E-UTRA, wherein Y is greater than or equal to 1; or
the DCI further comprises Z preset bits other than the plurality of bits, wherein the total length, of the Z preset bits and the plurality of bits indicating the TDD uplink-downlink configuration information, is smaller than the length of the shortest one of the DCI formats 0, 1, 1A, 1B, 1C, 1D, 2, 2A, 2B, 2C, 2D, 3, 3A and 4 supported in the 3GPP E-UTRA, wherein Z is greater than or equal to 0.