Abstract
Embodiments of the present invention provide a control information sending method receiving method and device. The control information sending method includes: determining a first subframe of a first radio frame on a first carrier where the first subframe includes a control region; sending control information in the control region of the first subframe of the first radio frame to a user equipment where the control information includes a PDCCH; and sending an ePDCCH in a second subframe of the first radio frame to the user equipment. According to the embodiments of the present invention when control information borne on an ePDCCH cannot be sent in a first radio frame a PDCCH can still be sent to a user equipment through a control region in a first subframe thereby achieving purposes of performing uplink/downlink scheduling for the user equipment and downlink feedback for uplink data of the user equipment.
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Technologies
Product
Base Station (eNB/gNB)
Use Cases
Services
Claim
1. A control information sending method, comprising:
determining, by a network device, a first subframe of a first radio frame on a first carrier, wherein the first subframe comprises a control region, the control region is in first n symbols of the first subframe, and n is a natural number less than 5; sending, by the network device, control information in the control region of the first subframe of the first radio frame to a user equipment, and sending a demodulation reference signal in the first subframe to the user equipment, wherein the control information comprises a physical downlink control channel (PDCCH) or a first enhanced physical downlink control channel (ePDCCH); and sending, by the network device, a second ePDCCH in a second subframe of the first radio frame to the user equipment.
2. The method according to claim 1, wherein the demodulation reference signal is sent only when the control information is sent; and/or, the demodulation reference signal is only used to demodulate the control information.
3. The method according to claim 1, wherein before the determining a first subframe of a first radio frame on a first carrier, the method further comprises:
sending, by the network device, radio resource control (RRC) dedicated signaling to the user equipment, so as to indicate a position of the first subframe on the first carrier to the user equipment.
4. The method according to claim 3, wherein before the sending RRC dedicated signaling to the user equipment, the method further comprises:
sending, by the network device, system information to the user equipment, wherein the system information is scheduled by an ePDCCH scrambled by a system information radio network temporary identifier (SI-RNTI); receiving, by the network device, random access information sent by the user equipment, wherein configuration information of the random access information is obtained from the system information; sending, by the network device, random access response information to the user equipment, wherein the random access response information is scheduled by an ePDCCH scrambled by a random access radio network temporary identifier RA-RNTI; and sending RRC connection setup information to the user equipment.
5. The method according to claim 1, wherein the first subframe is one or more types of the following subframes: a multimedia broadcast multicast service single frequency network (MBSFN) subframe, a subframe bearing a channel state information reference signal (CSI-RS), special subframes in time division duplex (TDD) special subframe configurations 0 and 5, and a physical multicast channel subframe.
6. A control information receiving method, comprising:
determining, by a user equipment, a first subframe of a first radio frame on a first carrier, wherein the first subframe comprises a control region, the control region is in first n symbols of the first subframe, and n is a natural number less than 5; receiving, by the user equipment, control information, sent by a network device, in the control region of the first subframe of the first radio frame, and receiving a demodulation reference signal, sent by the network device, in the first subframe, wherein the control information comprises a physical downlink control channel (PDCCH) or a first enhanced physical downlink control channel (ePDCCH); and receiving, by the user equipment, a second ePDCCH, sent by the network device, in a second subframe of the first radio frame.
7. The method according to claim 6, wherein the demodulation reference signal is sent only when the control information is sent; and/or, the demodulation reference signal is only used to demodulate the control information.
8. The method according to claim 6, wherein before the determining a first subframe of a first radio frame on a first carrier, the method further comprises:
receiving, by the user equipment, radio resource control (RRC) dedicated signaling sent by the network device, wherein the RRC dedicated signaling is used to indicate a position of the first subframe of the first radio frame on the first carrier.
9. The method according to claim 8, wherein before the receiving radio resource control RRC dedicated signaling sent by the network device, the method further comprises:
receiving, by the user equipment, system information sent by the network device, wherein the system information is scheduled by an ePDCCH scrambled by a system information radio network temporary identifier (SI-RNTI); sending, by the user equipment, random access information to the network device, wherein configuration information of the random access information is obtained from the system information; receiving, by the user equipment, random access response information sent by the network device, wherein the random access response information is scheduled by an ePDCCH scrambled by a random access radio network temporary identifier (RA-RNTI); and receiving, by the user equipment, RRC connection setup information sent by the network device.
10. The method according to claim 6, wherein the first subframe is one or more types of the following subframes: a multimedia broadcast multicast service single frequency network (MBSFN) subframe, a subframe bearing a channel state information reference signal (CSI-RS), special subframes in time division duplex (TDD) special subframe configurations 0 and 5, and a physical multicast channel subframe.
11. A network device, comprising:
a processor, configured to determine a first subframe of a first radio frame on a first carrier, wherein the first subframe comprises a control region, the control region is in first n symbols of the first subframe, and n is a natural number less than 5; and a transceiver, configured to send control information in the control region of the first subframe of the first radio frame determined by the processor, and send a demodulation reference signal in the first subframe to the user equipment, wherein the control information comprises a physical downlink control channel (PDCCH) or a first enhanced physical downlink control channel (ePDCCH); wherein the transceiver is further configured to send a second ePDCCH in a second subframe of the first radio frame to the user equipment.
12. The device according to claim 11, wherein the transceiver is configured to send the demodulation reference signal in the first subframe to the user equipment in the following manner sending the demodulation reference signal only when the control information is sent;
and/or sending the demodulation reference signal, which is only used to demodulate the control information, in the first subframe to the user equipment.
13. The device according to claim 11, wherein the transceiver is further configured to send radio resource control (RRC) dedicated signaling to the user equipment, so as to indicate a position of the first subframe of the first radio frame on the first carrier to the user equipment.
14. The device according to claim 13, wherein
the processor is further configured to: before the transmitter sends the RRC dedicated signaling to the user equipment, control the transceiver to send system information to the user equipment, wherein the system information is scheduled by an ePDCCH scrambled by a system information radio network temporary identifier (SI-RNTI); control the transceiver to receive random access information sent by the user equipment, wherein configuration information of the random access information is obtained from the system information; control the transceiver to send random access response information to the user equipment, wherein the random access response information is scheduled by an ePDCCH scrambled by a random access radio network temporary identifier (RA-RNTI); and control the transceiver to send RRC connection setup information to the user equipment through the transmitter.
15. The device according to claim 11, wherein the first subframe determined by the processor is one or more types of the following subframes: a multimedia broadcast multicast service single frequency network (MBSFN) subframe, a subframe bearing a channel state information reference signal (CSI-RS), special subframes in time division duplex (TDD) special subframe configurations 0 and 5, and a physical multicast channel subframe.
16. A user equipment, comprising:
a processor, configured to determine a first subframe of a first radio frame on a first carrier, wherein the first subframe comprises a control region, the control region is in first n symbols of the first subframe, and n is a natural number less than 5; and a transceiver, configured to receive control information, sent by a network device, in the control region of the first subframe determined by the processor, and receive a demodulation reference signal, sent by the network device, in the first subframe, wherein the control information comprises a physical downlink control channel (PDCCH) or a first enhanced physical downlink control channel (ePDCCH), wherein the transceiver is further configured to receive a second ePDCCH, sent by the network device, in a second subframe of the first radio frame.
17. The user equipment according to claim 16, wherein the demodulation reference signal is sent only when the control information is sent; and/or, the demodulation reference signal received in the first subframe by the transceiver is only used to demodulate the control information.
18. The user equipment according to claim 16, wherein the transceiver is further configured to: before the processor determines the first subframe in the first radio frame on the first carrier, receive radio resource control (RRC) dedicated signaling sent by the network device, wherein the RRC dedicated signaling is used to indicate a position of the first subframe of the first radio frame on the first carrier.
19. The user equipment according to claim 18, wherein
the processor is further configured to: before the transceiver receives the RRC dedicated signaling sent by the network device, receive, through the transceiver, system information sent by the network device, wherein the system information is scheduled by an ePDCCH scrambled by a system information radio network temporary identifier (SI-RNTI); control the transceiver to send random access information to the network device, wherein configuration information of the random access information is obtained from the system information; receive, through the transceiver, random access response information sent by the network device, wherein the random access response information is scheduled by an ePDCCH scrambled by a random access radio network temporary identifier (RA-RNTI); and receive, through the transceiver, RRC connection setup information sent by the network device.
20. The user equipment according to claim 15, wherein the first subframe determined by the processor is one or more types of the following subframes: a multimedia broadcast multicast service single frequency network (MBSFN) subframe, a subframe bearing a channel state information reference signal (CSI-RS), special subframes in time division duplex (TDD) special subframe configurations 0 and 5, and a physical multicast channel subframe.
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Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.
Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.
Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.
Family member:related patents or applications that share a common priority or original filing.