Method and device for MAC layer feedback in a packet communication system
First Claim
1. In a communication system, a method for media access control feedback over a packet channel divided in channel time slots comprising the steps of:
- dividing the channel time slots into sub-channel time slots;
defining a packet channel feedback field associated with each sub-channel time slot;
forming a sub-channel feedback field in the packet channel feedback field to indicate acknowledgments;
forming a sub-channel assignment field in the packet channel feedback field to indicate time slot assignments;
assigning a first temporary mobile identity to a first active mobile station and a second temporary local mobile identity to a second active mobile station;
inserting the first temporary mobile identity into the sub-channel feedback field to indicate an acknowledgment for the first active mobile station;
inserting the second temporary mobile identity into the sub-channel assignment field to indicate a time slot assignment for the second active mobile station; and
sending the packet channel feedback field in a signaling message to the first and second active mobile stations.
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Accused Products
Abstract
A method and communication device for media access control feedback over a packet channel divided in channel time slots is provided. The channel time slots are divided into sub-channel time slots. A packet channel feedback field associated with each sub-channel time slot is defined. Acknowledgments are indicated using the packet channel feedback field. An active mobile identity associated with an active mobile station may be assigned which would then be included in the packet channel feedback field. A plurality of active mobile identities may be assigned and some of the active mobile identities may be reserved for special functions. The assigned active mobile identity is used, among other things, to identify an active mobile station to receive packet data signals. The active mobility identity is invalidated after one transaction of packet data signals or invalidated after a short number of such transactions. One or more of the assigned active mobile identities may be used to indicate a time slot assignment for the active mobile station. A sub-channel feedback field in the packet channel feedback field is used to indicate acknowledgments. A sub-channel assignment field in the packet channel feedback field is used to indicate time slot assignments. The sub-channel assignment field is substantially independent of the sub-channel feedback field.
70 Citations
40 Claims
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1. In a communication system, a method for media access control feedback over a packet channel divided in channel time slots comprising the steps of:
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dividing the channel time slots into sub-channel time slots; defining a packet channel feedback field associated with each sub-channel time slot; forming a sub-channel feedback field in the packet channel feedback field to indicate acknowledgments; forming a sub-channel assignment field in the packet channel feedback field to indicate time slot assignments; assigning a first temporary mobile identity to a first active mobile station and a second temporary local mobile identity to a second active mobile station; inserting the first temporary mobile identity into the sub-channel feedback field to indicate an acknowledgment for the first active mobile station; inserting the second temporary mobile identity into the sub-channel assignment field to indicate a time slot assignment for the second active mobile station; and sending the packet channel feedback field in a signaling message to the first and second active mobile stations. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 18, 19, 20, 21, 28, 30)
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9. In a communication system, a method for media access control feedback over a packet channel divided in channel time slots comprising the steps of:
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dividing the channel time slots into sub-channel time slots; defining a packet channel feedback field associated with each sub-channel time slot; assigning an first temporary mobile identity to first active mobile station and a second temporary mobile identity to a second active mobile station; transmitting packet data signals on an uplink over the packet channel based on the time slot assignments, wherein the step of transmitting comprises the steps of; forming a sub-channel feedback field in the packet channel feedback field to indicate acknowledgments; and forming a sub-channel assignment field in the packet channel feedback field to indicate time slot assignments, the sub-channel assignment field being substantially independent of the sub-channel feedback field; inserting the first temporary mobile identity into the sub-channel feedback field to indicate an acknowledgment for the first active mobile station; inserting the second temporary mobile identity into the sub-channel assignment field to indicate a time slot assignment for the second active mobile station; and sending the packet channel feedback field in a signaling message to the first and second active mobile stations. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
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22. A method for transmitting packet data signals in a time slotted packet channel comprising the steps of:
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creating sub-channel time slots associated with the time slotted packet channel; transmitting from a first active mobile station a request to initiate packet data transmissions to a base station; including a suggested value for a first temporary mobile identity in the request; awaiting an acknowledgment from the base station; if a negative acknowledgment is received, waiting for an assigned value for the first temporary mobile identity of the first active mobile station to be received from the base station in a packet channel feedback field of a signaling message; and wherein the packet channel feedback field comprises the first temporary local mobile identity to indicate acknowledgment for the first active mobile station, wherein the packet channel feedback field also comprises a second temporary local mobile identity assigned to a second active mobile station to allocate one or more of the sub-channel time slots for the second active mobile station. - View Dependent Claims (23, 24)
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25. A communication device for communicating via packet data signals over a packet channel comprising:
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a sub-channel controller for identifying acknowledgments and assignments of time slots on the packet channel based on a packet channel feedback field; and a channel access manager for controlling access to the packet channel based on the acknowledgments and assignments; wherein the packet channel feedback field comprises a sub-channel feedback field to indicate acknowledgments; wherein the packet channel feedback field comprises a sub-channel assignment field to indicate time slot assuagements; wherein a first one of the sub-channel feedback field and the sub-channel assignment field in a signaling message comprises a first temporary mobile identity assigned to the communication device, wherein a second one of the sub-channel feedback field and the sub-channel assignment field in the signaling message comprises a second temporary mobile identity assigned to another communication device. - View Dependent Claims (26, 27, 29)
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31. In a communication system, a method for media access control feedback over a packet channel divided in channel time slots comprising the steps of:
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dividing the channel time slots into sub-channel time slots; defining a packet channel feedback field associated with each sub-channel time slot; assigning a first temporary local mobile identity to a first active mobile station and a second temporary local mobile identity to a second active mobile station; inserting the first temporary local mobile identity into the packet channel feedback field of a signaling message to indicate an acknowledgment for the first active mobile station; inserting the second temporary local mobile identity into the packet channel feedback field of the signaling message to allocate one or more of the sub-channel time slots for the second active mobile station; and sending the signaling message to the first and second active mobile stations. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39, 40)
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Specification