Method for configuring transmission resource, related device, and communication system
Embodiments of the present disclosure related to a method for configuring a transmission resource, a related device, and a communication system. The method for configuring a transmission resource includes: notifying, by an access device, a user equipment of an uplink-downlink configuration change period, where the uplink-downlink configuration change period is less than a system message change period; and sending, by the access device, a first message to the user equipment, where the first message carries an uplink-downlink configuration indication corresponding to the uplink-downlink configuration change period, so that the user equipment updates, according to the uplink-downlink configuration indication, an uplink-downlink configuration used by the user equipment. The solutions according to the embodiments of the present disclosure help to improve flexibility for configuring a transmission resource and a utilization rate of a frequency spectrum resource.
1. A method for configuring a transmission resource, the method comprising:
notifying, by an access device, a user equipment (UE) of an uplink-downlink configuration change period, wherein the uplink-downlink configuration change period is less than a system message change period, wherein the system message change period is a change period of a System Information Block-1 message; and
sending, by the access device, a first message to the UE, wherein the first message carries an uplink-downlink configuration indication corresponding to the uplink-downlink configuration change period, so that the UE updates, according to the uplink-downlink configuration indication, an uplink-downlink configuration used by the UE, wherein the uplink-downlink configuration defines which one or more subframes are downlink subframes, which one or more subframes are uplink subframes, and which one or more subframes are special subframes in a time division duplex system,
wherein the uplink-downlink configuration change period is 1/N of the system message change period, wherein N is a positive integer greater than 1.
2. The method according to claim 1 , wherein the notifying, by the access device, the UE of the uplink-downlink configuration change period comprises:
notifying, by the access device, the UE of the uplink-downlink configuration change period by using a system broadcast message; or
notifying, by the access device, the UE of the uplink-downlink configuration change period by using dedicated radio resource control signaling.
3. The method according to claim 1 , wherein the sending, by the access device, the first message to the UE comprises:
sending, by the access device, the first message to the UE at a start of the uplink-downlink configuration change period, wherein an uplink-downlink configuration indicated by the uplink-downlink configuration indication carried in the first message is enabled within the uplink-downlink configuration change period; or
sending, by the access device, the first message to the UE not at the start of the uplink-downlink configuration change period, wherein an uplink-downlink configuration indicated by the uplink-downlink configuration indication is enabled within a uplink-downlink configuration change period following the uplink-downlink configuration change period.
4. The method according to claim 1 , wherein:
the uplink-downlink configuration indication is used to indicate an uplink-downlink configuration number.
5. A method for configuring a transmission resource, the method comprising:
obtaining, by a user equipment (UE), an uplink-downlink configuration change period based on a notification received from an access device, wherein the uplink-downlink configuration change period is less than a system message change period, wherein the system message change period is a change period of a System Information Block-1 message;
receiving, by the UE, a first message from the access device, wherein the first message carries an uplink-downlink configuration indication corresponding to the uplink-downlink configuration change period; and
updating, by the UE and according to the uplink-downlink configuration indication carried in the first message, an uplink-downlink configuration used by the UE, wherein the uplink-downlink configuration defines which one or more subframes are downlink subframes, which one or more subframes are uplink subframes, and which one or more subframes are special subframes in a time division duplex system,
wherein the uplink-downlink configuration change period is 1/N of the system message change period, wherein N is a positive integer greater than 1.
6. The method according to claim 5 , wherein the receiving, by the UE, the first message from the access device comprises:
receiving, by the UE, the first message from the access device at a start of the uplink-downlink configuration change period, wherein an uplink-downlink configuration indicated by the uplink-downlink configuration indication carried in the first message is enabled within the uplink-downlink configuration change period.
7. The method according to claim 5 , wherein after the updating the uplink-downlink configuration used by the UE, the method further comprises:
receiving, by the UE, a system message from the access device, wherein the system message carries an uplink-downlink configuration indication corresponding to the system message change period; and
updating, by the UE and according to the uplink-downlink configuration indication carried in the system message, the uplink-downlink configuration used by the UE.
8. A user equipment (UE), comprising:
a processor, configured to obtain a uplink-downlink configuration change period based on a notification received from an access device, wherein the uplink-downlink configuration change period is less than a system message change period, wherein the system message change period is a change period of a System Information Block-1 message; and
a receiver, configured to receive a first message from the access device, wherein the first message carries an uplink-downlink configuration indication corresponding to the uplink-downlink configuration change period;
wherein the processor is further configured to update, according to the uplink-downlink configuration indication carried in the first message, an uplink-downlink configuration used by the UE, wherein the uplink-downlink configuration defines which one or more subframes are downlink subframes, which one or more subframes are uplink subframes, and which one or more subframes are special subframes in a time division duplex system,
wherein the uplink-downlink configuration change period is 1/N of the system message change period, wherein N is a positive integer greater than 1.
9. The UE according to claim 8 , wherein the receiver is further configured to:
receive the first message from the access device at a start of the uplink-downlink configuration change period, wherein an uplink-downlink configuration indicated by the uplink-downlink configuration indication carried in the first message is enabled within the uplink-downlink configuration change period.
10. The UE according to claim 8 ,
wherein the receiver is further configured to receive a system message from the access device after the processor updates the uplink-downlink configuration used by the UE, wherein the system message carries an uplink-downlink configuration indication corresponding to the system message change period; and
wherein the processor is further configured to update, according to the uplink-downlink configuration indication carried in the system message received by the receiver, the uplink-downlink configuration used by the UE.
11. A non-transitory computer readable storage medium storing computer program code that, when executed by a processing unit, causes the processing unit to perform the steps of:
notifying, by an access device, a user equipment (UE) of an uplink-downlink configuration change period, wherein the uplink-downlink configuration change period is less than a system message change period, wherein the system message change period is a change period of a System Information Block-1 message; and
sending, by the access device, a first message to the UE, wherein the first message carries an uplink-downlink configuration indication corresponding to the uplink-downlink configuration change period, so that the UE updates, according to the uplink-downlink configuration indication, an uplink-downlink configuration used by the UE, wherein the uplink-downlink configuration defines which one or more subframes are downlink subframes, which one or more subframes are uplink subframes, and which one or more subframes are special subframes in a time division duplex system,
wherein the uplink-downlink configuration change period is 1/N of the system message change period, wherein N is a positive integer greater than 1.
12. The computer readable storage medium according to claim 11 , wherein the notifying, by an access device, the UE of the uplink-downlink configuration change period comprises:
notifying, by the access device, the UE of the uplink-downlink configuration change period by using a system broadcast message; or
notifying, by the access device, the UE of the uplink-downlink configuration change period by using dedicated radio resource control signaling.
13. The computer readable storage medium according to claim 11 , wherein the sending, by the access device, the first message to the UE comprises:
sending, by the access device, the first message to the UE at a start of the uplink-downlink configuration change period, wherein an uplink-downlink configuration indicated by the uplink-downlink configuration indication carried in the first message is enabled within the uplink-downlink configuration change period; or
sending, by the access device, the first message to the UE not at the start of the uplink-downlink configuration change period, wherein an uplink-downlink configuration indicated by the uplink-downlink configuration indication is enabled within a uplink-downlink configuration change period following the uplink-downlink configuration change period.
14. The computer readable storage medium according to claim 11 , wherein:
the uplink-downlink configuration indication is used to indicate an uplink-downlink configuration number.