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1.发明公开
公开(公告)号：EP1604538A2
公开(公告)日：2005-12-14
申请号：EP04715987.6
申请日：2004-03-01
发明人： JIA, Qunli,Philips Electronics China , MA, Ni,Philips Electronics China , SUN, Li,Philips Electronics China , ZHANG, Xuejun,Philips Electronics China
IPC分类号： H04Q7/38
摘要： The present invention provides a wireless network system for establishing peer-to-peer communication between mobile terminals. Upon determining that peer-to-peer communication can be established between two mobile terminal, the wireless network system transmits to each of the mobile terminals information about radio resources used by the other one of the mobile terminals. Each mobile terminal then uses the radio resources information to test the characteristics of a dedicated uplink channel between the other one of the mobile terminals and the network system. Thus, no separate radio channel needs to be allocated for the channel testing. Furthermore, each mobile terminal uses the same radio resources to establish a dedicated radio channel in the peer-to-peer communication with the other one of the mobile terminals, which were previously used by itself for communication with the network system on the dedicated uplink channel. In this way, the network system does not need to allocate additional radio resources for establishing the peer-to-peer communication, thus simplifying the radio resources re-allocation scheme, while ensuring that the quality of the channels is the same as tested.
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2.发明公开MAINTAINING UPLINK CONTROL VIA THE INTERCEPTION OF SIGNALS FOR MOBILE TERMINALS IN DIRECT MODE PEER-TO-PEER COMMUNICATION 有权控制在上行方向TALK通过直接模式移动终端截取SIGNALS点对点通信
公开(公告)号：EP1604495A2
公开(公告)日：2005-12-14
申请号：EP04715989.2
申请日：2004-03-01
发明人： JIA, Qunli,Philips Electronics China , SUN, Li,Philips Electronics China , MA, Ni,Philips Electronics China , ZHANG, Xuejun,Philips Electronics China , CHENG, Jiang,Philips Electronics China , PENG, Fang,Philips Electronics China
IPC分类号： H04L12/56
CPC分类号： H04W76/14
摘要： The present invention provides a wireless communication network system that maintains uplink control for the mobile terminal in peer-to-peer communication. According to one embodiment of the invention, after determining a reliable direct communication link can be set up between the mobile terminals, the network system transmits information including control commands to the mobile terminals for establishing direct communication. The information includes a burst structure type, with the burst structure containing at least one section for carrying control information intended for the network system. After the direct communication is established, the network system continuously listens to signals communicated between the mobile terminals to receive bursts. The network system demodulates received bursts that are communicated between the two mobile terminals to determine whether a received burst contains control information intended for the network system. If control information intended for the network system is included in a received burst, the network performs a corresponding function. In this way, the uplink control for the mobile terminals can be effectively maintained in peer-to-peer communication.
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3.发明公开METHOD AND SYSTEM FOR MAINTAINING UPLINK SYNCHRONIZATION WITH PEER-TO-PEER COMMUNICATION IN A WIRELESS COMMUNICATION SYSTEM 审中-公开系统和方法用于维持UP Sync与对等通信在无线通信系统
公开(公告)号：EP1604470A2
公开(公告)日：2005-12-14
申请号：EP04715990.0
申请日：2004-03-01
发明人： SUN, Li,Philips Electronics China , MA, Ni,Philips Electronics China , CHENG, Jiang,Philips Electronics China , JIA, Qunli,Philips Electronics China , ZHANG, Xuejun,Philips Electronics China , DU, Yonggang,Philips Electronics China
CPC分类号： H04B7/2681 , H04W52/383 , H04W56/0045
摘要： A method is proposed for maintaining uplink synchronization with P2P communication in wireless communication networks, comprising steps of: the wireless communication system overhears the P2P communication between two UEs (user equipments), determines the SS (synchronization shift) information of said UEs according to the overheard information transferred by each UE in P2P communication, and transmits the SS information to the corresponding UE via the downlink common control channel; the UE monitors the downlink common control channel, and adjusts the TA (timing advance) for transmitting signals according to the SS information transferred via the downlink common control channel.
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4.发明公开DISTANCE DEPENDENT DIRECT MODE PEER-TO-PEER COMMUNICATION ESTABLISHMENT IN A TDD CDMA NETWORK 审中-公开正派依赖直接模式的点对点通信在生产TTD-CDMA网络
公开(公告)号：EP1604537A1
公开(公告)日：2005-12-14
申请号：EP04713959.7
申请日：2004-02-24
发明人： SUN, Li,Philips Electronics China , MA, Ni,Philips Electronics China , CHENG, Jiang,Philips Electronics China , JIA, Qunli,Philips Electronics China , ZHANG, Xuejun,Philips Electronics China , PAN, Sheng,Philips Electronics China , PENG, Fang,Philips Electronics China , DU, Yonggang,Philips Electronics China
摘要： A method for establishing P2P (peer-to-peer) communication in wireless communication networks, comprising steps of: determining whether two user equipments (caller and call) are in the same cell, and computing whether the distance between the two user equipments (UEs) meets the requirement for P2P communication according to the registry information and position information of the caller and the callee; determining whether the two UEs both have P2P communication capability according to the information of the wireless communication system indicating whether the two UEs both have P2P communication capability, when the two UEs are in the same cell and the distance between the two UEs meets the requirement for P2P communication; and allocating direct communication link for the two UEs to start communication when the two UEs both have P2P communication capability.
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公开(公告)号：EP1579631A2
公开(公告)日：2005-09-28
申请号：EP03777119.3
申请日：2003-12-15
IPC分类号： H04L12/28
摘要： This invention provides a system and method for enhancing point coordination function PCF in wireless LANs. A contention procedure is introduced into PCF in this invention. When the point coordinator (PC) polls the mobile terminal who has no frame to send, the terminal does not respond to the CF-Poll from PC, and will adjust its NAV (Network Allocation Vector) and set it to a special value that is defined as SPIFS (S-PCF Interframe Space). When data is ready on this mobile terminal when it is still in the same Contention Free Period CFP and its poll period is over, the terminal can contend for accessing the medium. If it detects the medium to be idle for SPIFS period during the CFP (Contention Free Period), then the mobile terminal gains the control of medium and starts to send the ready data. So this mobile terminal can have another opportunity to gain the control of medium during this CFP instead of next CFP, and this can decrease the transmission delay.
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