Method and device for adjusting sleep mode of mobile station
The present invention provides a method and a device for adjusting the sleep mode of a mobile station in order to solve the problem in current multi-hop relay systems of long time delays in data transmission caused when data packets have to wait for the next listening window to reach the mobile station because of packet errors. Wherein, a relay apparatus judges whether the previous hop network apparatus needs to retransmit data packets to the mobile station; when the previous hop network apparatus needs to retransmit data packets to the mobile station, the relay apparatus transmits to the mobile station the adjustment related information for adjusting the sleep mode of the mobile station. The mobile station adjusts the sleep mode according to the adjustment related information. Preferably, the adjustment related information comprises indicating information for indicating that the mobile station is in triggered listening status within predetermined time interval. In addition, the relay apparatus may also report the adjustment related information to the previous hop network apparatus. The technical solution provided by the present invention obtains shorter time delays, utilizes wireless resources efficiently, and decreases demand on relay apparatus.
1. A method, in the wireless relay apparatus, for controlling a mobile station dominated by a relay apparatus to adjust a sleep mode, wherein the method comprises:
judging, by the relay apparatus, whether previous hop network equipment of the relay apparatus needs to resend data packets and/or scheduling information to the mobile station;
generating, by the relay apparatus, adjustment related information for adjusting the sleep mode of the mobile station when the previous hop network equipment of the relay apparatus needs to resend data packets and/or scheduling information to the mobile station according to network configuration information obtained from a base station dominating the relay apparatus, wherein the network configuration information comprises position information of the relay apparatus in a multi-hop relay network, and the generating of the adjustment related information further comprises determining a starting time of the triggered listening status according to the position information; and
sending the adjustment related information for adjusting the sleep mode of the mobile station, by the relay apparatus, to the mobile station when the previous hop network equipment needs to resend data packets and/or scheduling information to the mobile station.
2. The method according to claim 1 , wherein the adjustment related information comprises information for indicating that the mobile station is in triggered listening status within a predetermined time interval.
3. The method according to claim 1 , wherein the adjustment related information comprises information for indicating that the mobile station is in triggered listening status within a predetermined time interval within a sleeping window.
4. The method according to claim 1 , wherein the network configuration information further comprises information regarding a retransmission mechanism and a scheduling strategy of the base station and generating the adjustment related information according to network configuration information further comprises:
determining any one of following items according to the position information, the retransmission mechanism and the scheduling strategy of the base station:
the starting time and end time of the triggered listening status; and
the starting time of the triggered listening status and duration of the triggered listening status.
5. The method according to claim 4 , wherein the retransmission mechanism comprises any one of following:
the multi-hop relay network is retransmission hop by hop;
the multi-hop relay network is retransmission end to end; and
the scheduling strategy is based on any one or more of :
load parameters of cell dominated by the base station; and
priority for the base station to schedule each mobile station.
6. The method according to claim 1 , wherein after the generating the adjustment related information according to the network configuration information, the method further comprises:
informing the previous hop network equipment that the mobile station is in the triggered listening status within the predetermined time interval.
7. A method, in wireless mobile station, for adjusting sleep mode, wherein the method comprises:
receiving adjustment related information, generated by a relay apparatus, for adjusting sleep mode of the mobile station, from the relay apparatus; and
adjusting sleep mode according to the adjustment related information wherein adjusting the sleep mode according to the adjustment related information further comprises: determining mode adjustment information for adjusting the sleep mode according to the adjustment related information; and adjusting the sleep mode according to the mode adjustment information wherein the adjustment related information comprises: position information of the relay apparatus which receives wrong data packets in multi-hop relay network in which the mobile station is located; retransmission mechanism configured by base station dominating the mobile station; and scheduling strategy of the base station.
8. The method according to claim 7 , wherein the adjustment related information comprises information for indicating that the mobile station is within a predetermined time interval of a triggered listening status, and adjusting the sleep mode according to the adjustment related information further comprises:
being in the triggered listening status according to the predetermined time interval.
9. The method according to claim 7 , comprising:
entering sleeping status if the mobile station is still in a sleeping window the moment the mobile station has finished receiving data in the triggered listening status.
10. A first control device, for a wireless relay apparatus, for controlling a mobile station dominated by the relay apparatus to adjust sleep mode, wherein the first control device comprises:
at least one processor configured as:
an evaluator, for judging whether previous hop network equipment of the relay apparatus needs to resend data packets and/or scheduling information to the mobile station;
an information generator for generating adjustment related information for adjusting the sleep mode of the mobile station when the evaluator judges that the previous hop network equipment of the relay apparatus needs to resend data packets and/or scheduling information to the mobile station wherein the adjustment related information is generated according to network configuration information obtained from a base station dominating the relay apparatus, wherein the network configuration information comprises position information of the relay apparatus in a multi-hop relay network, and the generating of the adjustment related information further comprises determining a starting time of the triggered listening status according to the position information; and
an adjustment controller, for sending adjustment related information for adjusting a sleep mode of the mobile station to the mobile station when the previous hop network equipment needs to resend data packets and/or scheduling information to the mobile station.
11. A wireless mobile station, comprising:
at least one processor configured as:
a receiver, for receiving adjustment related information, generated by a relay apparatus according to network configuration information obtained from a base station dominating the relay apparatus, wherein the network configuration information comprises position information of the relay apparatus in a multi-hop relay network, and the generating of the adjustment related information further comprises determining a starting time of the triggered listening status according to the position information, the adjustment related information being for adjusting a sleep mode of the mobile station, from the relay apparatus; and
an adjuster, for adjusting the sleep mode according to the adjustment related information.