1. A radio resource scheduling method, wherein the method is applied to unlicensed spectrum-based radio communication, and the method comprises:
determining, by a terminal, a channel status of a channel according to at least one of first status information of the channel and second status information of the channel, wherein the first status information of the channel is indicated by a secondary eNodeB, and wherein the second status information of the channel is obtained by the terminal; and sending, to a master eNodeB, a first notification message that indicates the channel status, so that the master eNodeB performs radio resource scheduling for the terminal according to the first notification message.
2. The method according to claim 1, wherein the first notification message further indicates at least one of a first duration of channel occupancy and a second duration of channel releasing, so that the master eNodeB allocates a radio resource to the terminal within at least one of the first duration and the second duration according to at least one of the first duration and the second duration.
3. The method according to claim 1, wherein the first notification message further indicates whether the channel is occupied and whether the channel is released, so that the master eNodeB allocates a radio resource to the terminal according to an indication of the first notification message before receiving a next notification message that is sent by the terminal.
4. The method according to claim 1, further comprising at least one of:
sending, by the terminal, first uplink data to the master eNodeB according to a first power, wherein the first power is a power limit that is configured by the master eNodeB for the terminal to send the first uplink data; and sending, by the terminal, second uplink data to the secondary eNodeB according to a second power, wherein the second power is a power limit that is configured by the secondary eNodeB for the terminal to send the second uplink data, wherein a sum of the first power and the second power is not greater than a maximum transmit power of the terminal.
5. The method according to claim 4, further comprising:
sending, by the terminal, third uplink data according to a third power or sending fourth uplink data according to a fourth power; when the third power is a residual power that is determined according to the first power and the second power, sending, by the terminal, the third uplink data to the master eNodeB according to the first power and a part of or all of the residual power; and when the fourth power is a residual power that is determined according to the first power and the second power, sending, by the terminal, the fourth uplink data to the secondary eNodeB according to the second power and a part of or all of the residual power; or sending, by the terminal, a second notification message to the master eNodeB, wherein the second notification message is configured to indicate whether a channel used by a primary secondary cell is available, so that when determining, according to the second notification message, that the channel used by the primary secondary cell is unavailable, the master eNodeB allocates a radio resource to the terminal according to a sum of the first power, the second power, and the residual power, or when determining that the channel used by the primary secondary cell is available, the master eNodeB allocates a radio resource to the terminal according to the first power, or the first power and the residual power.
6. The method according to claim 5, wherein a capability parameter of the terminal comprises limit information of a maximum quantity of downlink shared channel DL-SCH transport block bits that are received in a unit transmission time interval TTI and limit information of a maximum quantity of uplink shared channel UL-SCH transport block bits that are sent in a unit transmission time interval TTI, wherein the limit information is allocated by the master eNodeB and the secondary eNodeB; and
the method further comprises: when the channel used by the PSCell is occupied by LTE, the terminal receives downlink data that is sent by the secondary eNodeB according to the limit information allocated by the secondary eNodeB and/or the terminal sends uplink data to the secondary eNodeB according to the limit information allocated by the secondary eNodeB, and the master eNodeB allocates a radio resource to the terminal according to the limit information allocated by the master eNodeB; and when the channel used by the primary secondary cell is not occupied by LTE, the terminal cannot receive downlink data that is sent by the secondary eNodeB, and/or the terminal cannot send uplink data to the secondary eNodeB, wherein all capabilities corresponding to the capability parameter of the terminal are used by the master eNodeB to perform scheduling for the terminal.
7. The method according to claim 6, wherein the method further comprises at least one of the following steps:
when it is determined that an uplink radio resource of the primary secondary cell is unavailable, sending, by the terminal, a third notification message to the master eNodeB, so that the master eNodeB forwards, to the secondary eNodeB, content carried in the third notification message, and the secondary eNodeB performs radio resource scheduling for the terminal, wherein the third notification message carries a buffer status report BSR and a power headroom report PHR that are related to the secondary eNodeB; or when it is determined that an uplink radio resource of the primary secondary cell is unavailable, sending, by the terminal, a fifth notification message to the master eNodeB, so that the master eNodeB forwards, to the secondary eNodeB, content carried in the fifth notification message, and the secondary eNodeB performs radio resource scheduling for the terminal, wherein the fifth notification message carries a RLC status report that is corresponding to the secondary eNodeB and that is related to a data radio bearer DRB.
8. A hybrid automatic repeat request management method, wherein the method is applied to unlicensed spectrum-based radio communication, and the method comprises:
configuring, in a secondary eNodeB by an eNodeB, a primary secondary cell and at least one secondary cell for a terminal, so that the terminal decodes downlink data received by the primary secondary cell or one secondary cell to obtain a decoding result; when determining that an uplink radio resource of the primary secondary cell or the secondary cell is available, sending a first message to the eNodeB by using the primary secondary cell or the secondary cell; when determining that an uplink radio resource of the primary secondary cell or the secondary cell is unavailable, sending the first message to the eNodeB by using any secondary cell, different from the unavailable secondary cell, of the at least one secondary cell; and determining, by the eNodeB according to the first message, whether to retransmit the downlink data or send new downlink data.
9. The method according to claim 8, wherein when there are a plurality of secondary cells, the method further comprises:
configuring, by the eNodeB, priorities for the primary secondary cell and each secondary cell, wherein the primary secondary cell has a highest priority, so that the terminal selects, in descending order of the priorities of the primary secondary cell and the secondary cell, a cell with a highest priority from the primary secondary cell or the secondary cell whose current radio resource is available, to send the first message.
10. The method according to claim 8, wherein the method further comprises one of the following cases:
the eNodeB configures a same primary secondary cell and a plurality of secondary cells for different terminals, wherein a same priority is configured for the secondary cells of the different terminals; the eNodeB configures a same primary secondary cell and a plurality of secondary cells for different terminals, wherein different priorities are configured for the secondary cells of the different terminals; the eNodeB configures different primary secondary cells and a plurality of secondary cells for different terminals, wherein a same priority is configured for the secondary cells of the different terminals; or the eNodeB configures different primary secondary cells and a plurality of secondary cells for different terminals, wherein different priorities are configured for the secondary cells of the different terminals.
11. The method according to claim 8, wherein the method further comprises:
receiving, by the eNodeB, the first message on a physical uplink control channel PUCCH or a physical uplink shared channel PUSCH corresponding to a physical downlink shared channel PDSCH on which the downlink data is sent; or when the first message is not detected on a radio resource, sequentially detecting, by the eNodeB, the first message in descending order of priorities of candidate secondary cells; or when the first message is a message that is sent by the terminal by using a channel used by a candidate secondary cell, detecting, by the eNodeB according to a processing mode of carrier aggregation CA, a channel on which the first message is sent.
12. A terminal, wherein the terminal is applied to unlicensed spectrum-based radio communication, and the terminal comprises:
a processor configured to determine a channel status of a channel according to at least one of first status information of the channel and second status information of the channel, wherein the first status information of the channel is indicated by a secondary eNodeB, and wherein the second status information of the channel is obtained by the terminal; and a transmitter configured to send, to a master eNodeB, a first notification message configured to indicate the channel status determined by the processor, so that the master eNodeB performs radio resource scheduling for the terminal according to the first notification message.
13. The terminal according to claim 12, wherein the first notification message is further configured to indicate at least one of a first duration of channel occupancy and a second duration of channel releasing, so that the master eNodeB allocates a radio resource to the terminal within at least one of the first duration and the second duration according to at least one of the first duration and the second duration; or
the first notification message is further configured to indicate whether the channel is occupied and whether the channel is released, so that the master eNodeB allocates a radio resource to the terminal according to an indication of the first notification message before receiving a next notification message that is sent by the terminal.
14. The terminal according to claim 12, wherein the transmitter is further configured to:
send first uplink data to the master eNodeB according to a first power, wherein the first power is a power limit that is configured by the master eNodeB for the terminal to send the first uplink data; and/or send second uplink data to the secondary eNodeB according to a second power, wherein the second power is a power limit that is configured by the secondary eNodeB for the terminal to send the second uplink data, and a sum of the first power and the second power is not greater than a maximum transmit power of the terminal; and the transmitter is further configured to: send third uplink data according to a third power or send fourth uplink data according to a fourth power; when the third power is a residual power that is determined according to the first power and the second power, send the third uplink data to the master eNodeB according to the first power and a part of or all of the residual power; and when the fourth power is a residual power that is determined according to the first power and the second power, send the fourth uplink data to the secondary eNodeB according to the second power and a part of or all of the residual power; or send a second notification message to the master eNodeB, wherein the second notification message is configured to indicate whether a channel used by a primary secondary cell is available, so that when determining, according to the second notification message, that the channel used by the primary secondary cell is unavailable, the master eNodeB allocates a radio resource to the terminal according to a sum of the first power, the second power, and the residual power, or when determining that the channel used by the primary secondary cell is available, the master eNodeB allocates a radio resource to the terminal according to the first power, or the first power and the residual power.
15. The terminal according to claim 14, wherein a capability parameter of the terminal comprises limit information of a maximum quantity of downlink shared channel DL-SCH transport block bits that are received in a unit transmission time interval TTI and limit information of a maximum quantity of uplink shared channel UL-SCH transport block bits that are sent in a unit transmission time interval TTI, wherein the limit information is allocated by the master eNodeB and the secondary eNodeB; and
the transmitter is further configured to execute one of the following cases: when the channel used by the PSCell is occupied by LTE, the terminal receives downlink data that is sent by the secondary eNodeB according to the limit information allocated by the secondary eNodeB and/or the terminal sends uplink data to the secondary eNodeB according to the limit information allocated by the secondary eNodeB, and the master eNodeB allocates a radio resource to the terminal according to the limit information allocated by the master eNodeB; and when the channel used by the primary secondary cell is not occupied by LTE, the terminal cannot receive downlink data that is sent by the secondary eNodeB, and/or the terminal cannot send uplink data to the secondary eNodeB, wherein all capabilities corresponding to the capability parameter of the terminal are used by the master eNodeB to perform scheduling for the terminal.
16. The terminal according to claim 12, wherein the transmitter is further configured to perform at least one of the following steps:
when it is determined that an uplink radio resource of the primary secondary cell is unavailable, sending a third notification message to the master eNodeB, so that the master eNodeB forwards, to the secondary eNodeB, content carried in the third notification message, and the secondary eNodeB performs radio resource scheduling for the terminal, wherein the third notification message carries a buffer status report BSR and a power headroom report PHR that are related to the secondary eNodeB; or when it is determined that an uplink radio resource of the primary secondary cell is unavailable, sending a fifth notification message to the master eNodeB, so that the master eNodeB forwards, to the secondary eNodeB, content carried in the fifth notification message, and the secondary eNodeB performs radio resource scheduling for the terminal, wherein the fifth notification message carries a RLC status report that is corresponding to the secondary eNodeB and that is related to a data radio bearer DRB.
17. An eNodeB, wherein the eNodeB is applied to unlicensed spectrum-based radio communication, and the eNodeB comprises:
a processor configured to: configure, in a secondary eNodeB, a primary secondary cell and at least one secondary cell for a terminal, so that the terminal decodes downlink data received by the primary secondary cell or any secondary cell to obtain a decoding result; and when it is determined that an uplink radio resource of the primary secondary cell or the secondary cell is available, send a first message to the eNodeB by using the primary secondary cell or the secondary cell, or when it is determined that an uplink radio resource of the primary secondary cell or the secondary cell is unavailable, send the first message to the eNodeB by using any secondary cell, different from the unavailable secondary cell, of the at least one secondary cell; and determine, according to the first message, whether to retransmit the downlink data or send new downlink data.
18. The eNodeB according to claim 17, wherein when there are a plurality of candidate secondary cells, the processer is further configured to:
configure priorities for the primary secondary cell and each secondary cell, wherein the primary secondary cell has a highest priority, so that the terminal selects, in descending order of the priorities of the primary secondary cell and the secondary cell, a cell with a highest priority from the primary secondary cell or the secondary cell whose current radio resource is available, to send the first message.
19. The eNodeB according to claim 17, wherein a priority configured for a candidate secondary cell of the terminal by the processer meets one of the following cases:
the processer configures a same primary secondary cell and a plurality of secondary cells for different terminals, wherein a same priority is configured for the secondary cells of the different terminals; the processer configures a same primary secondary cell and a plurality of secondary cells for different terminals, wherein different priorities are configured for the secondary cells of the different terminals; the processer configures different primary secondary cells and a plurality of secondary cells for different terminals, wherein a same priority is configured for the secondary cells of the different terminals; or the processer configures different primary secondary cells and a plurality of secondary cells for different terminals, wherein different priorities are configured for the secondary cells of the different terminals.
20. The eNodeB according to claim 17, wherein the eNodeB further comprises:
a transmitter configured to receive the first message on a physical uplink control channel PUCCH or a physical uplink shared channel PUSCH corresponding to a physical downlink shared channel PDSCH on which the downlink data is sent; or when the first message is not detected on a radio resource, sequentially detect the first message in descending order of priorities of candidate secondary cells; or when the first message is a message that is sent by the transmission module by using a channel used by the candidate secondary cell, detect, according to a processing mode of carrier aggregation CA, a channel on which the first message is sent.