Automatic retransmission and error recovery for packet oriented point-to-multipoint communication
First Claim
1. A method of automatic retransmission of messages in a point-to-multipoint wireless communication network where a base station controller (BSC) communicates with a plurality of customer premises equipments (CPE), using frames having an upstream portion and a downstream portion, the method comprising the steps of:
- selecting physical and media access control (MAC) parameters for automatic retransmission of messages, 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 the physical and MAC parameters for the upstream portion being selected independently for said each customer premises equipment;
transmitting the physical and MAC parameters from the BSC to the CPEs;
wherein the physical and MAC parameters are selected based on previous communication between the base station controller and said each customer premises equipment; and
allocating a first part of the upstream portion of a frame as a shared resource for enabling CPEs of a first group to contend for transmitting messages associated with automatic retransmission and a second part of the upstream portion of the frame as an unshared resource for enabling CPEs of a second group to transmit individual messages associated with automatic retransmission.
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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
33 Claims
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1. A method of automatic retransmission of messages in a point-to-multipoint wireless communication network where a base station controller (BSC) communicates with a plurality of customer premises equipments (CPE), using frames having an upstream portion and a downstream portion, the method comprising the steps of:
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selecting physical and media access control (MAC) parameters for automatic retransmission of messages, 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 the physical and MAC parameters for the upstream portion being selected independently for said each customer premises equipment; transmitting the physical and MAC parameters from the BSC to the CPEs; wherein the physical and MAC parameters are selected based on previous communication between the base station controller and said each customer premises equipment; and allocating a first part of the upstream portion of a frame as a shared resource for enabling CPEs of a first group to contend for transmitting messages associated with automatic retransmission and a second part of the upstream portion of the frame as an unshared resource for enabling CPEs of a second group to transmit individual messages associated with automatic retransmission. - View Dependent Claims (2, 3, 4, 5)
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6. A base station controller capable of communicating with a plurality of customer premises equipment, the base station controller comprising:
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a transmitter capable of communicating information downstream to the customer premises equipment; a receiver capable of receiving upstream information communicated by the customer premises equipment; a processor capable of executing 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, and physical and MAC parameters for upstream retransmission; include the physical and MAC parameters in a control section of a frame, the control section being for communicating control information downstream;
wherein the instructions that cause the processor to select comprise instructions that, when executed by the processor,cause the processor to select the physical and MAC parameters for automatic retransmission based on previous communication between the base station controller and said each customer premises equipment; 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)
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10. 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 capable of causing 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, and physical and MAC parameters for upstream retransmission; -
include the physical and MAC parameters in a control section of a frame, the control section being for sending control information downstream; wherein the instructions that cause the processor to select comprise instructions that, when executed by the processor, cause the processor to select dynamically the physical and MAC parameters for automatic retransmission based on previous communication between the base station controller and said each customer premises equipment; 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 (11, 12, 13)
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14. A method of automatic retransmission of downstream data messages in a point-to-multipoint wireless communication network where a base station controller (BSC) exchanges messages with a one or more customer premises equipments (CPE) along a respective upstream and downstream transmission link, the method comprising the steps of:
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selecting physical and media access control (MAC) parameters for transmissions and retransmissions to and from the CPEs, the physical and MAC parameters being selected independently for each CPE of the plurality of CPEs, wherein the physical and MAC parameters are selected based on previous communication between the BSC and each CPE of the plurality of CPEs; transmitting the physical and MAC parameters to a CPE in a downstream control message to enable the CPE to transmit and receive data using the physical and MAC parameters; and allocating a first part of the upstream bandwidth to the CPE for enabling the CPE to transmit to the BSC a message associated with automatic retransmission. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. A method of automatic retransmission of upstream data messages in a point-to-multipoint wireless communication network where a base station controller (BSC) exchanges messages with a one or more customer premises equipments (CPE) along respective upstream and downstream transmission links, the method comprising the steps of:
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receiving at each CPE from the BSC physical and media access control (MAC) parameters for transmissions to and from the CPEs, the physical and MAC parameters being selected independently for each CPE of the plurality of CPEs, based on previous communication between the BSC and each of the plurality of CPEs; transmitting and receiving data at each CPE using the physical and MAC parameters; and receiving at a CPE a first allocation of upstream bandwidth for enabling the CPE to transmit to the BSC a message associated with automatic retransmission. - View Dependent Claims (31, 32, 33)
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Specification