Dynamic channel allocation in multiple-access communication systems
First Claim
1. A communications system having multiple access channels, access mode control and a channel allocator for a communication network, said communications system further comprising, a dynamic allocation unit for controlling allocation of channels to communication units to enable communications units to share channels, said dynamic allocation unit having, means for specifying a reservation set for reserving channel assignments, means for specifying an allocation set for receiving said channel assignments, means for controlling the reservation set and the allocation set based upon system parameters.
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Abstract
Dynamic allocation of communication channels among communication units (CU) in a communications system. Dynamic channel allocation employs a reservation set for reserving channels and an allocation set corresponding to the reservation set for receiving allocated channels. The reservation set and the allocation set are changed dynamically as a function of network parameters to control the dynamic channel operation. Reservation set information is broadcast downlink to multiple users to reserve an allocation set of uplink radio resources for specific ones of the users. The system uses a modification of the packet data channel (PDCH) of a GPRS/EGPRS or EDGE system which employs an Uplink Status Flag (USF) on each PDCH downlink radio block. The downlink reservation set information is commonly received by all users in the group of users. Allocation delay, bandwidth efficiency and other system parameters are optimized.
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Citations
60 Claims
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1. A communications system having multiple access channels, access mode control and a channel allocator for a communication network, said communications system further comprising,
a dynamic allocation unit for controlling allocation of channels to communication units to enable communications units to share channels, said dynamic allocation unit having, means for specifying a reservation set for reserving channel assignments, means for specifying an allocation set for receiving said channel assignments, means for controlling the reservation set and the allocation set based upon system parameters.
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56. In a communications system having multiple access channels, access mode control and a channel allocator for a communication network, said communications system operating with the method comprising,
dynamically controlling allocation of channels to communication units to enable communications units to share channels, said dynamic allocation including, specifying a reservation set for reserving channel assignments, specifying an allocation set for receiving said channel assignments controlling the reservation set and the allocation set based upon system parameters.
Specification