Method and apparatus for soft switching
First Claim
1. A method performed by a user equipment in wireless communication systems, for switching from P2P (Peer_to_Peer) communication mode to UP-UTRAN-DOWN communication mode (called as conventional mode), comprising steps of:
- (a) detecting the direct link used by the user equipment in P2P communication with the other user equipment;
(b) sending a request for switching to conventional communication mode to a wireless communication network system, if the detecting result indicates that the communication quality of the direct link can'"'"'t satisfy the requirement for P2P communication; and
(c) establishing conventional communication connection to communicate with said the other user equipment in conventional communication mode, after receiving acknowledge (ACK) message of the request for switching sent by the network system.
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Abstract
A method in wireless communication systems is provided for switching from P2P (Peer to Peer) communication mode to UP-UTRAN-DOWN (conventional communication mode) and from conventional communication mode to P2P mode, wherein the method performed by a user equipment for switching from P2P communication mode to conventional communication mode comprising steps of: detecting the direct link used by the user equipment in P2P communication with the other user equipment; sending a request for switching to conventional communication mode to a wireless communication network system if the detecting result indicates that the communication quality of the direct link can'"'"'t satisfy the requirement for P2P communication; and establishing conventional communication connection so as to communicate with said the other user equipment in conventional mode, after receiving the acknowledge (ACK) message of the request for switching sent by the network system.
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Citations
36 Claims
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1. A method performed by a user equipment in wireless communication systems, for switching from P2P (Peer_to_Peer) communication mode to UP-UTRAN-DOWN communication mode (called as conventional mode), comprising steps of:
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(a) detecting the direct link used by the user equipment in P2P communication with the other user equipment;
(b) sending a request for switching to conventional communication mode to a wireless communication network system, if the detecting result indicates that the communication quality of the direct link can'"'"'t satisfy the requirement for P2P communication; and
(c) establishing conventional communication connection to communicate with said the other user equipment in conventional communication mode, after receiving acknowledge (ACK) message of the request for switching sent by the network system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method performed by the wireless communication network system in wireless communication systems, for switching user equipments from P2P (Peer to Peer) communication mode to UP-UTRAN-DOWN communication mode (called as conventional communication mode), comprising:
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(A) receiving requests from UE in P2P communication mode for switching to conventional communication mode;
(B) responding to the requests for switching to conventional communication mode and allocating traffic channel in conventional communication mode to the two user equipments in P2P communication mode; and
(C) sending ACK messages of the requests for switching to the two user equipments, so that the two user equipments can establish conventional communication connection. - View Dependent Claims (11, 12)
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13. A method performed by a user equipment for switching from UP_UTRAN_DOWN (called as conventional communication mode) to P2P communication mode, comprising:
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(a) receiving control information from the wireless communication network system;
(b) overhearing the information transferred on the uplink between the network system and said the other user equipment communicating with the user equipment in conventional communication, according to the control information;
(c) detecting whether the user equipment can overhear the information transferred on the uplink, to determine whether the communication quality of the uplink can satisfy the requirement for P2P communication between the other user equipment and the user equipment;
(d) establishing P2P connection with the other user equipment by using the uplink, so that the user equipment can communicate with the other user equipment in P2P communication mode, if the detecting result indicates that the uplink can satisfy the quality requirement for P2P communication. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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21. A method performed by the wireless communication network system in wireless communication systems for the user equipment to switch from UP_UTRAN_DOWN (conventional communication mode) to P2P communication mode, comprising:
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(a) determining whether the two user equipments satisfy the condition of establishing P2P communication;
(b) sending control information to the two user equipments respectively to instruct them to overhear information transferred on the uplink between their peers and the network system, if the two user equipments satisfy the condition of establishing P2P communication;
(c) receiving notification messages from the two user equipments, which indicate that each of the two user equipments can overhear information transferred on the uplink between its peer and the network system; and
(d) sending instruction messages to the two user equipments respectively to instruct them to establish mutual P2P communication. - View Dependent Claims (22, 23, 24)
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25. A user equipment capable of switching from P2P communication mode to Up_UTRAN-DOWN (conventional communication mode) in wireless communication systems, comprising:
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a direct link detecting means, for detecting the direct link for P2P communication between the user equipment and the other user equipment;
a switching request sending means, for sending a request for switching to conventional communication mode to a wireless communication network system when the detecting result indicates that the communication quality of the direct link can'"'"'t satisfy the requirement for P2P communication; and
a conventional communication connection establishing means, for establishing connection of conventional communication to communicate with the other user equipment in conventional communication mode after receiving the ACK message of the request for switching sent by the network system. - View Dependent Claims (26, 27, 28)
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29. A wireless communication network system, capable of performing a method for the user equipment to switch from P2P communication mode to UP-UTRAN-DOWN (conventional communication mode), comprising:
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a receiving means, for receiving the request from the UE in P2P communication mode for switching to conventional communication mode;
an allocating means, for responding to the request for switching to conventional communication mode and allocating traffic channel in conventional communication mode to the two user equipments in P2P communication mode; and
a sending means, for sending ACK messages of the requests for switching to the two user equipments so that convention communication connection between the two user equipments can be established and sending ACK messages of She requests for releasing P2P communication radio resource so that the two user equipments can switch from concurrent state of P2P communication and conventional communication to single conventional communication mode. - View Dependent Claims (30)
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31. A user equipment in wireless communication systems, capable of switching from UP_UTRAN-DOWN (conventional communication mode) to P2P communication mode, comprising:
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a receiving means, for receiving control information from the wireless communication network system;
an overhearing means, for overhearing information transferred on the uplink between the network system and the other user equipment communicating in conventional communication with the user equipment, according to the control information;
a detecting means, for detecting whether information transferred on the uplink can be overheard, so as to determine whether the communication quality of the uplink can satisfy the requirement for P2P communication between the user equipment and the other user equipment; and
a P2P connection establishing means, for establishing P2P connection with the other user equipment by using the uplink, so that the user equipment can communicate with said the other user equipment in P2P mode when the detecting result shows that the uplink satisfies the quality requirement for P2P communication. - View Dependent Claims (32, 33, 34, 35)
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36. A wireless communication network system in wireless communication systems, capable of performing a method for the user equipment to switch from UP_UTRAN_DOWN (conventional communication) to P2P communication mode, comprising:
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a determining means, for determining whether the two user equipments satisfy the requirement for establishing P2P communication;
an instructing means, for sending control information to the two user equipments respectively to instruct them to overhear information transferred on the uplink between their peers and the network system, when it'"'"'s determined that the two user equipments satisfy the requirement for establishing P2P communication;
a receiving means, for receiving notification messages and requests for releasing conventional communication radio resource from the two user equipments, wherein the notification messages show that each of the two user equipments can overhear information transferred on the uplink between its peer and the network system; and
a sending means, for sending instruction messages to the two user equipments to instruct them to establish mutual P2P communication and sending ACK messages of the requests for releasing conventional communication radio resource to the two user equipments, so that the two user equipments can respectively switch from the concurrent state of P2P communication and conventional communication to single P2P communication mode.
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Specification