Method and apparatus of header compression for broadcast services in radio telecommunication system
First Claim
1. A method for a radio telecommunication system operable according to a standard protocol, said method for synchronizing a mobile station decompressor for performing broadcast-service packet-header decompression, said method comprising the steps of:
- establishing a point-to-point protocol (PPP) session between the mobile station and a packet data serving node (PDSN);
transmitting by the mobile station a broadcast service subscription request;
receiving in the mobile station a grant of broadcast service subscription;
transmitting by the mobile station a request for a full header transmission;
monitoring the PPP session for a full header transmission;
receiving a full header transmission formed of a multi-channel flow treatment protocol transmission; and
synchronizing the mobile-station decompressor using the received full header received during said step of receiving the full header transmission.
3 Assignments
0 Petitions
Accused Products
Abstract
A method and apparatus for packet-data header decompression, particularly advantageous for use in connection with broadcast and multicast messages being transported through a radio telecommunication system operable according to the CDMA 2000 standard. When a mobile subscriber desires broadcast content from a content server, the mobile station sets up a PPP session for submitting the request and negotiating security protocols. When a subscription is granted, the mobile station receives broadcast content that has undergone header compression. In order to synchronize its decompressor, the mobile station receives a full header from a PDSN. The full header is preferably sent out on a periodic basis just for this purpose. The frequency of full-header transmissions by the PDSN is increased from a normal mode to a high full-header frequency (HFHF) mode upon receiving a request for a full header from a mobile station, but returns to normal-mode full-header transition frequency after receiving an ACK message from the requesting mobile indicating successful decompressor synchronization, or upon the expiration of a predetermined HFHF-mode maximum duration.
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Citations
19 Claims
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1. A method for a radio telecommunication system operable according to a standard protocol, said method for synchronizing a mobile station decompressor for performing broadcast-service packet-header decompression, said method comprising the steps of:
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establishing a point-to-point protocol (PPP) session between the mobile station and a packet data serving node (PDSN); transmitting by the mobile station a broadcast service subscription request; receiving in the mobile station a grant of broadcast service subscription; transmitting by the mobile station a request for a full header transmission; monitoring the PPP session for a full header transmission; receiving a full header transmission formed of a multi-channel flow treatment protocol transmission; and synchronizing the mobile-station decompressor using the received full header received during said step of receiving the full header transmission. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An apparatus for use in a mobile station for communicating in a radio telecommunication system operable according to a standard protocol to receive broadcast content in compressed packet-data form, said apparatus comprising:
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transmit circuitry for transmitting messages related to the broadcast services including a request message for a full header during a PPP session; receive circuitry for receiving the broadcast content and for receiving messages related to the broadcast services; a decompressor coupled to the receiver circuitry for decompressing at least compressed header information in the received broadcast content, wherein the decompressor synchronizes based on a full header received in a PPP session the full header formed of a multi-channel flow treatment protocol; and a controller for controlling the operation of the transmit circuitry, the receive circuitry, and the decompressor. - View Dependent Claims (10, 11)
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12. A method of facilitating the transmission of broadcast content from a broadcast server to at least a first mobile station operating within a radio telecommunication system, said method comprising the steps of:
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receiving a request from the first mobile station to establish a PPP session; establishing a PPP session between the first mobile station and a packet data serving node (PDSN); relaying a broadcast subscription request from the first mobile station to a content server; sending a broadcast service request grant from the content server to the first mobile station; receiving a request from the first mobile station for a full header transmission; transmitting to the first mobile station a full header formed of a multi-channel flow treatment protocol transmission for synchronizing a decompressor in the mobile station so that it is able to decompress the compressed header information; and relaying broadcast content from the content server to the first mobile station, wherein the broadcast content transmitted to the mobile station includes packet data with compressed packet headers. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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Specification