Communication system with floating call anchor
First Claim
1. A communication system, comprising:
- a primary base transceiver station engaged in wireless communication with a first mobile unit and carrying data being transmitted between the first mobile unit and a second mobile unit, the primary base transceiver station performing a call anchor function for the data, the call anchor function including controlling various characteristics of the digital transmission of the data between the first mobile unit and the primary base transceiver station and controlling allocation of wireless resources among mobile units and secondary base transceiver stations in the communication system, the call anchor function operable to relocate between the primary base transceiver station and the secondary base transceiver stations or a base station controller during data transmission between the first and second mobile units in response to a communication characteristic of the data.
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Abstract
A floating call anchor is used to improve the efficiency of utilization of wireless and backhaul resources in cellular communication systems. For conditions under which soft handoff can be effectively used to conserve wireless resources, data transmitted from a first mobile unit (MU) via a wireless signal are received by one or more base transceiver stations (BTSs) and sent to a base station controller (BSC) or other device remote from the BTSs. The data are then sent from the remote device to the BTS(s) transmitting data to a second MU. If the two MUs engaged in communication are within the same cell or adjacent cells, and the savings of backhaul resources outweighs the additional wireless resource costs associated with performing the call anchor function at a BTS, then a single BTS is used to communicate with both MUs. This single BTS performs the call anchor function.
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Citations
20 Claims
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1. A communication system, comprising:
a primary base transceiver station engaged in wireless communication with a first mobile unit and carrying data being transmitted between the first mobile unit and a second mobile unit, the primary base transceiver station performing a call anchor function for the data, the call anchor function including controlling various characteristics of the digital transmission of the data between the first mobile unit and the primary base transceiver station and controlling allocation of wireless resources among mobile units and secondary base transceiver stations in the communication system, the call anchor function operable to relocate between the primary base transceiver station and the secondary base transceiver stations or a base station controller during data transmission between the first and second mobile units in response to a communication characteristic of the data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for communicating, comprising:
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using a primary base transceiver station to engage in wireless communication with a first mobile unit; using the primary base transceiver station to carry data being transmitted between the first mobile unit and a second mobile unit; using the primary base transceiver station to perform a call anchor function for the data, the call anchor function including controlling various characteristics of the digital transmission of the data between the first mobile unit and the primary base transceiver station and controlling allocation of wireless resources among mobile units and secondary base transceiver stations in the communication system; relocating the call anchor function between the primary base transceiver station and the secondary base transceiver stations or a base station controller during data transmission between the first and second mobile units in response to a communication characteristic of the data. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A computer-readable medium having a set of instructions operable to direct a processor to:
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use a primary base transceiver station to engage in wireless communication with a first mobile unit; use the primary base transceiver station to carry data being transmitted between the first mobile unit and a second mobile unit; use the primary base transceiver station to perform a call anchor function for the data, the call anchor function including controlling various characteristics of the digital transmission of the data between the first mobile unit and the primary base transceiver station and controlling allocation of wireless resources among mobile units and secondary base transceiver stations in the communication system; relocate the call anchor function between the primary base transceiver station and the secondary base transceiver stations or a base station controller during data transmission between the first and second mobile units in response to a communication characteristic of the data. - View Dependent Claims (18, 19, 20)
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Specification