Point to multi-point services using high speed shared channels in wireless communication systems

Abstract

Service data is transferred in a wireless communication system. A first service identification is transmitted for reception by a group of users of a cell in the system. The group of users does not include all of the users of the cell. Each of the group of users receives the service identification. Each of the group of users monitors for a second service identification being transmitted over a high speed downlink shared channel (HS-DSCH). The service data is transmitted over the HS-DSCH with the second service identification. Each of the group of users detects the second service identification and receives the service data of the HS-DSCH.

What is claimed is: 
     
         1 . A method for use in wireless communications, the method comprising:
 transmitting a point to multipoint (PtM) service identification to a group of users, the PtM service identification indicating that PtM service data will be transmitted on a transport channel, wherein the PtM service identification is transmitted on a control channel for multi-point services;   transmitting the PtM service data to the group of users on the transport channel;   receiving feedback from each of the group of users indicating whether the PtM service data was received without error; and   retransmitting the service data to the group of users on a condition that the feedback indicates that the PtM service data was not received without error by at least one of the group of users.   
     
     
         2 . The method of  claim 1 , wherein the point-to-multi-point service control channel is mapped to the transport channel. 
     
     
         3 . The method of  claim 1 , wherein the service data comprises multimedia data. 
     
     
         4 . The method of  claim 1 , wherein retransmitting the service data comprises retransmitting the service data on a shared channel for multi-point services. 
     
     
         5 . A base station for use in wireless communications, the base station comprising:
 a transmitter, configured to transmit a point to multipoint (PtM) service identification a group of users, the PtM service identification indicating that PtM service data will be transmitted on the transport channel, wherein the PtM service identification is transmitted on a control channel for multi-point services;   the transmitter further configured to transmit the PtM service data to the group of users on the transport channel;   a receiver, configured to receive feedback from each of the group of users indicating whether the PtM service data was received without error; and   the transmitter further configured to retransmit the service data on a condition that the feedback indicates that the PtM service data was not received without error by at least one user.   
     
     
         6 . The base station of  claim 5 , wherein the point-to-multi-point service control channel is mapped to the transport channel. 
     
     
         7 . The base station of  claim 5 , wherein the service data comprises multimedia data. 
     
     
         8 . The base station of  claim 5 , wherein the transmitter is further configured to retransmit the service data on a shared channel for multi-point services. 
     
     
         9 . A device for use in wireless communications, the device comprising:
 a receiver configured to receive a point-to-multipoint (PtM) service identification indicating that PtM service data will be receivable on a transport channel, wherein the PtM service identification is received on a control channel for multi-point services;   the receiver further configured to receive the PtM service data over the transport channel;   a transmitter configured to transmit feedback indicating whether the PtM service data was received without error; and   the receiver further configured to receive a retransmission of the PtM service data on a condition that the feedback indicates that the PtM service data was not received without error.   
     
     
         10 . The device of  claim 9 , wherein the point-to-multi-point service control channel is mapped to the transport channel. 
     
     
         11 . The device of  claim 9 , wherein the service data comprises multimedia data. 
     
     
         12 . The device of  claim 9 , wherein the receiver is further configured to receive the retransmission of the PtM service data on a shared channel for multi-point services. 
     
     
         13 . A method for use in a wireless transmit/receive unit (WTRU), the method comprising:
 receiving a point-to-multipoint (PtM) service identification indicating that PtM service data will be receivable on a transport channel, wherein the PtM service identification is received on a control channel for multi-point services;   receiving the PtM service data over the transport channel;   transmitting feedback indicating whether the PtM service data was received without error; and   receiving a retransmission of the PtM service data on a condition that the feedback indicates that the PtM service data was not received without error.   
     
     
         14 . The method of  claim 13 , wherein the point-to-multi-point service control channel is mapped to the transport channel. 
     
     
         15 . The method of  claim 13 , wherein the service data comprises multimedia data. 
     
     
         16 . The method of  claim 13 , further comprising receiving the retransmission of the PtM service data on a shared channel for multi-point services.