Method for transmitting streaming media content to wireless subscriber stations using packet header suppression
A radio access system receives packets from a local source of streaming media content via a local connection and from remote packet sources via a remote network. The radio access system communicates with a subscriber station via an air interface that includes an uplink and a downlink. A packet classifier in the radio access system maps packets having the subscriber station's IP address as destination address to the subscriber station's downlink. The subscriber station communicates with a content controller via the remote network to request selected streaming media content. The content controller instructs the radio access system to convey the selected streaming media content from the local source to the subscriber station. In response, the packet classifier maps the packets containing the selected streaming media content to a downlink (either the original downlink or a new one) for transmission to the subscriber station.
1. A method for transmitting data to a wireless subscriber station, said method comprising: receiving first data packets, said first data packets comprising first packet headers and first packet payloads, said first packet headers including a first destination address corresponding to said wireless subscriber station; receiving second data packets containing selected media content, said second data packets comprising second packet headers and second packet payloads, said second packet headers including a second destination address corresponding to a base station; transmitting said first data packets to said wireless subscriber station via said base station; receiving a control signal; in response to said control signal: (a) establishing a packet header suppression rule with said wireless subscriber station, wherein said packet header suppression rule associates a packet header suppression index with said first destination address; (b) a packet classifier mapping said second data packets to a downlink transport connection of said wireless subscriber station and generating header-suppressed data packets by replacing said second packet headers in said second data packets with said packet header suppression index; and (c) transmitting said header-suppressed data packets to said wireless subscriber station via said base station.
2. The method of claim 1 , further comprising:
said wireless subscriber station generating reconstructed data packets from said header-suppressed data packets in accordance with said packet header suppression rule, said reconstructed data packets comprising said second packet payloads and reconstructed packet headers, said reconstructed packet header including said first destination address.
3. The method of claim 1 , wherein said first packet headers include a first source address and said second packet headers include a second source address, and wherein said packet header suppression rule associates said packet header suppression index with said first source address.
4. The method of claim 1 , wherein said control signal specifies a plurality of packet header parameters, said plurality of packet header parameters including said first destination address, and wherein said packet header suppression rule associates said packet header suppression index with said plurality of packet header parameters.
5. The method of claim 1 , wherein said first data packets are received from a content controller via a first pathway and said second data packets are received from a local content source via a second pathway.
6. The method of claim 5 , wherein said first pathway extends through a home agent associated with said wireless subscriber station and said second pathway does not extend through said home agent.