Automatic retransmission and error recovery for packet oriented point-to-multipoint communication
First Claim
1. A method of controlling selection of parameters for automatic retransmission in a point-to-multipoint wireless communication link having an upstream portion for communicating data from a plurality of customer premises equipment (CPE) to a base station controller (BSC) and a downstream portion for communicating data from the base station controller to the plurality of customer premises equipment, the method comprising the steps of:
- selecting physical and media access control (MAC) parameters for automatic retransmission, the physical and MAC parameters for the downstream portion being selected independently for each customer premises equipment of the plurality of customer premises equipment and physical and MAC parameters for the upstream portion being selected independently for said each customer premises equipment;
including the physical and MAC parameters in a control section of a frame, the control section for sending control information downstream; and
allocating a first part of the upstream portion as shared and some part of the upstream portion as unshared when there are messages received but not yet acknowledged.
6 Assignments
0 Petitions
Accused Products
Abstract
Point to multipoint wireless communication, including automatic retransmission and error recovery for packet oriented point to multipoint communication, which integrates adaptive and dynamic responsiveness for parameters for automatic retransmission using wireless communication. A wireless communication link is divided into a downstream portion and an upstream portion. Parameters are selected for automatic retransmission independently for the downstream portion and the upstream portion of the wireless communication link. A BSC controls the selection of parameters for automatic retransmission for all CPE within a cell. As part of a TDD frame, in which the BSC and the CPE share communication bandwidth using a TDMA technique, the BSC includes its selection of parameters for automatic retransmission to be used by CPE within a control section of the TDD frame. The BSC dynamically and adaptively determines new selected parameters for automatic retransmission, in response to conditions of a wireless communication link with each independent CPE. The BSC dynamically and adaptively allocates acknowledgement time slots within the upstream portion of the TDD frame, for use by each selected CPE. The BSC allocates some portion of the upstream bandwidth as a shared resource and some portion of the upstream bandwidth as unshared when there are messages received but not yet acknowledged. The BSC dynamically and adaptively response to acknowledgement and non-acknowledgement messages from each selected CPE, to integrate the automatic retransmission protocol with the TDD frame and the TDMA technique used within that frame.
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Citations
15 Claims
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1. A method of controlling selection of parameters for automatic retransmission in a point-to-multipoint wireless communication link having an upstream portion for communicating data from a plurality of customer premises equipment (CPE) to a base station controller (BSC) and a downstream portion for communicating data from the base station controller to the plurality of customer premises equipment, the method comprising the steps of:
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selecting physical and media access control (MAC) parameters for automatic retransmission, the physical and MAC parameters for the downstream portion being selected independently for each customer premises equipment of the plurality of customer premises equipment and physical and MAC parameters for the upstream portion being selected independently for said each customer premises equipment; including the physical and MAC parameters in a control section of a frame, the control section for sending control information downstream; and allocating a first part of the upstream portion as shared and some part of the upstream portion as unshared when there are messages received but not yet acknowledged. - View Dependent Claims (2, 3, 4, 5)
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6. A base station controller configured to communicate with a plurality of customer premises equipment, the base station controller comprising:
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a transmitter configured to communicate information downstream to the customer premises equipment; a receiver configured to receive upstream information communicated by the customer premises equipment; a processor configured to execute instructions to control the transmitter and the receiver; and a memory storing a set of instructions, the memory being coupled to the processor, the set of instructions comprising instructions that, when executed by the processor, cause the processor to select physical and MAC parameters for automatic retransmission of information between the base station controller and the customer premises equipment, the physical and MAC parameters for downstream retransmission being selected independently for each customer premises equipment of the plurality of customer premises equipment, and physical and MAC parameters for upstream retransmission being selected independently for said each customer premises equipment; include the physical and MAC parameters in a control section of a frame, the control section being for communicating control information downstream; and allocate a first part of the upstream information as shared and some part of the upstream information as unshared when there are messages received but not yet acknowledged. - View Dependent Claims (7, 8, 9, 10)
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11. An article of manufacture comprising a memory with a set of instructions stored in the memory, the set of instructions comprising instructions that, when executed by a processor configured to cause receiver and transmitter of a base station controller to communicate with a plurality of customer premises equipment, cause the processor to
select physical and MAC parameters for automatic retransmission of information between the base station controller and the customer premises equipment, the physical and MAC parameters for downstream retransmission from the base station controller to the customer premises equipment being selected independently for each customer premises equipment of the plurality of customer premises equipment, and physical and MAC parameters for upstream retransmission from the customer premises equipment to the base station controller being selected independently for said each customer premises equipment; -
include the physical and MAC parameters in a control section of a frame, the control section being for sending control information downstream; and allocate a first part of upstream information as shared and some part of the upstream information as unshared when there are messages received but not yet acknowledged. - View Dependent Claims (12, 13, 14, 15)
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Specification