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:
sending, by a network device, system information to a user equipment, wherein the system information is scheduled by an enhanced physical downlink control channel (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 another ePDCCH scrambled by a random access radio network temporary identifier (RA-RNTI);
sending radio resource control (RRC) connection setup information to the user equipment; and
sending, by the network device, RRC dedicated signaling to the user equipment, so as to indicate a position of a first subframe of a first radio frame on a first carrier to the user equipment.
2. The method according to claim 1, further comprising:
determining, by the network device, the first subframe of the first radio frame on the 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 the 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 ePDCCH; and
sending, by the network device, a second ePDCCH in a second subframe of the first radio frame to the user equipment.
3. The method according to claim 2, wherein at least one of the following situations exist: the demodulation reference signal is sent only when the control information is sent; and the demodulation reference signal is only used to demodulate the control information.
4. 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.
5. A control information receiving method comprising:
receiving, by a user equipment, system information sent by a network device, wherein the system information is scheduled by an enhanced physical downlink control channel (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 another ePDCCH scrambled by a random access radio network temporary identifier (RA-RNTI); and
receiving, by the user equipment, radio resource control (RRC) connection setup information sent by the network device;
receiving, by the user equipment, RRC dedicated signaling sent by the network device, wherein the RRC dedicated signaling is used to indicate a position of a first subframe of a first radio frame on a first carrier.
6. The method according to claim 5, further comprising:
determining, by the user equipment, the first subframe of the first radio frame on the 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 the 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 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 at least one of the following situations exist: the demodulation reference signal is sent only when the control information is sent; and the demodulation reference signal is only used to demodulate the control information.
8. The method according to claim 5, 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.
9. A 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 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.
10. The device according to claim 9, 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.
11. A network device comprising: a processor and a transceiver,
wherein the processor is configured to: control the transceiver to send system information to a user equipment, wherein the system information is scheduled by an enhanced physical downlink control channel (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 another ePDCCH scrambled by a random access radio network temporary identifier (RA-RNTI); and
control the transceiver to send radio resource control (RRC) connection setup information to the user equipment through the transmitter; and
the transceiver is configured to send RRC dedicated signaling to the user equipment, so as to indicate a position of a first subframe of a first radio frame on a first carrier to the user equipment.
12. 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.
13. 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.
14. The user equipment according to claim 13, 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.
15. A user equipment comprising: a processor and a transceiver,
wherein the processor is configured to:
receive, through the transceiver, system information sent by a network device, wherein the system information is scheduled by an enhanced physical downlink control channel (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 another ePDCCH scrambled by a random access radio network temporary identifier (RA-RNTI); and
receive, through the transceiver, radio resource control (RRC) connection setup information sent by the network device; and
wherein the transceiver is further configured to: receive RRC dedicated signaling sent by the network device, wherein the RRC dedicated signaling is used to indicate a position of a first subframe of a first radio frame on a first carrier.
16. 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.