Method and apparatus for uplink synchronization maintenance with P2P communication in wireless communication networks
US7336638B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 16, 2004 |
| Grant date | Feb 26, 2008 |
| Priority date | — |
| Expiry date | Apr 16, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W56/0045
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for maintaining uplink synchronization in P2P (Peer to Peer) communication, performed by a user equipment in wireless communication systems, comprising: negotiating with a wireless communication network system about the schedule and parameters for controlling the uplink synchronization of the user equipment by the procedure of establishing P2P direct link; transmitting testing signals to the network system via a customized uplink channel according to the negotiated parameters; receiving the control information transmitted via a customized downlink channel from the network system according to the negotiated schedule; and maintaining uplink synchronization of the user equipment in P2P communication according to the control information. Uplink synchronization can be realized through the customized channel, so the present invention can overcome the problem of overload brought by implementing uplink synchronization through the downlink common control channel and system performance degradation caused by increasing the transmitting power of the user equipment to transmit P2P signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.