Method of providing group call services in a CDMA communications system
AssigneeMotorola, Inc.
InventorsMichael L. Needham, Leigh M. Chinitz, Duane C. Rabe
Life of this patent
Estimating the term…
Abstract
The present invention encompasses a base station and method of providing communication services to a plurality of communication units. The method includes the steps of sending communication information between the base station and at least two of the plurality of communication units. A first step of identifying communication units produces a group identifier. A scrambling code, based at least in part on the group identifier, is then used to encode the communication information for transmission.
Claims13
In a base station for use in a digital communications system that provides communication services to a plurality of communication units, a method of sending communication information between the base station and at least two of the plurality of communication units, the method comprising the steps of:
- identifying the at least two of the plurality of communication units to produce a group identifier that corresponds to the at least two of the plurality of communication units identified;
- and
- generating a scrambling code based at least in part on the group identifier.
In a communication unit for use in a digital communications system that includes a base station for providing communication services to a plurality of such communication units, a method of receiving communication information from the base station comprising the steps of:
- identifying a call type;
- when the call type identifies a group call to a predetermined group, determining whether the communication unit is a member of the predetermined group;
- and
- when the communication unit is determined to be a member of the predetermined group, generating a scrambling code based at least in part on a group identifier that corresponds to the predetermined group.
In a communication unit for use in code division multiple access (CDMA) communications system that includes a base station for providing communication services to a plurality of communication units, a method of participating in a group call comprising the steps of:
- identifying a group identifier for the group call that corresponds to the at least two of the plurality of communication units identified;
- and
- generating a long code based at least in part on the group identifier.
Dependencies are inferred from the claim text.