Method for identifying connection, mobile station and base station
Disclosed are a method for identifying a connection, mobile station and base station. The method comprises the steps of: assigning a MS ID to the mobile station when the mobile station enters into the coverage area of the base station; and assigning a connection ID to a connection when the connection is established between the base station and the mobile station. With the proposed solution, the data overhead could be reduced due to short Connection ID instead of 16-bit CID in 802.16e, especially for VoIP traffic. In addition, due to adjustable bit-length of Connection ID, the tuple <MS ID, Connection ID> could flexibly support different numbers of connections while keeping overhead in minimal.
1. A method for identifying a transport connection between a base station and a mobile station (MS) uniquely in a domain of a cell or sector using a tuple <MS ID, Connection ID> in connection-oriented MAC, comprising:
assigning a MS ID to the mobile station when the mobile station enters into the coverage area of the base station wherein the MS ID is unique in the domain of a cell or a sector; and
assigning a connection ID to a connection when the connection is established between the base station and the mobile station, wherein the connection ID is unique in the domain of the mobile station and the combination of the MS ID and the connection ID is used to identify one connection uniquely in the domain of the mobile station.
2. The method of claim 1 , wherein the MS ID is denoted with m bits and the connection ID is denoted with n bits, wherein m and n are integers.
3. The method of claim 2 , further comprising: adding at least one bit to the connection ID.
4. The method of claim 2 , wherein the connection IDs for the specific mobile station have the same length.
5. The method of claim 2 , wherein a set of connection IDs is reserved for signaling connections.
6. The method of claim 2 , further comprising: allocating radio resources for the mobile station based on the MS ID.
7. The method of claim 6 , wherein allocating radio resources for each mobile station based on the MS ID further comprises:
allocating at least one resource block for a downlink based on the MS ID; and
allocating at least one resource block for a uplink based on the MS ID.
8. The method of claim 7 , wherein when transmitting, the resource block is filled with MAC PDUs whose header contains a field containing n-bit Connection ID.
9. The method of claim 3 , further comprising: updating the MS ID in the case of the mobile station moving from the coverage area of the base station to the coverage area of another base station.
10. The method of claim 9 , wherein the connection ID for the mobile station is maintained when the mobile station moves from the coverage area of the base station to the coverage area of another base station.
11. A base station for identifying a connection between the base station and a mobile station (MS) uniquely in a domain of a cell or sector using a tuple <MS ID, Connection ID> in connection-oriented MAC, comprising:
an MS ID assignment module configured to assign an MS ID to the mobile station when the mobile station enters into the coverage area of the base station, wherein the MS ID is unique in the domain of a cell or a sector; and
a connection ID assignment module configured to assign a connection ID to a connection when the connection is established between the base station and the mobile station, wherein the connection ID is unique in the domain of the mobile station and the combination of the MS ID and the connection ID is used to identify one connection uniquely in the domain of the mobile station.
12. A mobile station (MS), which is identified by an MS ID of a tuple <MS ID, Connection ID> assigned from a base station in connection-oriented MAC when the mobile station enters into a coverage area of the base station, the mobile station comprising:
a receiver configured to receive a message including a connection ID; and
a connector configured to establish a connection with the base station based on the connection ID, wherein the MS ID is unique in the domain of a cell or a sector and the connection ID is unique in the domain of the mobile station and the combination of the MS ID and the connection ID is used to identify one connection uniquely in the domain of the mobile station.