Packet switched traffic management in a cellular telecommunications system
First Claim
1. In a cellular telecommunications system comprising a plurality of packet radio channels wherein each packet radio channel is controlled by packet radio channel controller, and a plurality of transceiving stations, each of said transceiving stations capable of transmitting and receiving data packets and sharing a packet radio channel, a method of managing admission to the plurality of packet radio channel of said system, said method comprising the steps of:
- (a) receiving an indication that admission is needed to a packet radio channel for a packet call;
(b) sending an admission request to a first packet radio channel controller;
(c) receiving a response from the first packet radio channel controller;
(d) determining if said response indicates that said packet call is to be admitted to a packet radio channel associated with the first packet radio channel controller; and
(e) repeating steps (b), (c) and (d), for each of the plurality of packet radio channel controllers, until said response indicates said packet call is to be admitted to one of said packet radio channels, or until a negative response has been received from each of the plurality of packet radio channel controllers.
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Accused Products
Abstract
A method and system of packet switched traffic management in a cellular telecommunications system is provided. The invention comprises a packet switched radio channel (PRCH) manager for each cell of a cellular system and a PRCH controller for each PRCH in the cell. The PRCH manager interacts with and, controls one or more PRCH controllers. The PRCH manager performs the functions of evaluating service requests, handling a PRCH admission queue and managing the active PRCHs of the cell. The PRCH controllers perform the functions of supervising ongoing traffic, controlling admission and controlling traffic congestion for each individual PRCH. The invention allows a system operator to set a maximum tolerable delay for each PRCH and a priority for each packet call. By selectively choosing the maximum tolerable delays and priorities within the system, the system operator can reduce the probability that a PRCH user is subject to unacceptable packet transmission delay.
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Citations
24 Claims
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1. In a cellular telecommunications system comprising a plurality of packet radio channels wherein each packet radio channel is controlled by packet radio channel controller, and a plurality of transceiving stations, each of said transceiving stations capable of transmitting and receiving data packets and sharing a packet radio channel, a method of managing admission to the plurality of packet radio channel of said system, said method comprising the steps of:
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(a) receiving an indication that admission is needed to a packet radio channel for a packet call; (b) sending an admission request to a first packet radio channel controller; (c) receiving a response from the first packet radio channel controller; (d) determining if said response indicates that said packet call is to be admitted to a packet radio channel associated with the first packet radio channel controller; and (e) repeating steps (b), (c) and (d), for each of the plurality of packet radio channel controllers, until said response indicates said packet call is to be admitted to one of said packet radio channels, or until a negative response has been received from each of the plurality of packet radio channel controllers. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. In a cellular telecommunications system comprising a plurality of transceiving stations each capable of transmitting and receiving data packets and sharing a packet radio channel, a PRCH admission queue, and a PRCH resource manager, a method of managing packet radio channels, said method comprising the steps of:
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evaluating the total required traffic for all packet calls in said admission queue; and determining if a new PRCH is needed to handle the required traffic; sending a PRCH setup request to said resource manager if a new PRCH is required to handle the required traffic; determining if a packet radio channel exists with no packet calls if a new PRCH is not required to handle the required traffic; and sending a PRCH release request to said resource manager if a packet radio channel exists with no packet calls. - View Dependent Claims (18)
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19. In a cellular telecommunications system comprising at least one packet switched radio channel and a plurality of transceiving stations, each of said transceiving stations capable of transmitting and receiving data packets and sharing a packet radio channel, said system further comprising a PRCH manager for managing traffic on said at least one packet radio channel, a method of managing packet radio channel resources, said method comprising the steps of:
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receiving a packet radio channel setup request from said PRCH manager; determining if adequate resources exist within said system to allow a new packet radio channel to be set up; determining whether the traffic load on packet radio channels of surrounding cells requires additional resources; and allocating previously unutilized resources for a new packet radio channel in response to a positive determination of adequate resources.
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20. In a cellular telecommunications system comprising at least one packet switched radio channel and a plurality of transceiving stations, each of said transceiving stations capable of transmitting and receiving data packets and sharing a packet radio channel, said system further comprising a PRCH manager for managing traffic on said at least one packet radio channel, a method of managing packet radio channel resources, said method comprising the steps of:
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receiving a release request from said PRCH manager; determining whether said release request is to be granted; and de-allocating resources allocated for one of said at least one packet radio channels in response to a positive determination.
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21. In a cellular telecommunications system comprising at least one packet radio channel and a plurality of transceiving stations, each of said transceiving stations capable of transmitting and receiving data packets and sharing a packet radio channel, an apparatus for managing admission to said at least one packet radio channel, said apparatus comprising:
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an evaluation means for receiving an indication that admission for a packet call is needed to a packet radio channel and generating at least one admission request; at least one PRCH controller, each controlling an associated packet radio channel and for receiving an admission request from said evaluation means, determining whether said packet call is to be admitted to said associated packet radio channel and generating an admission granted signal if said packet call is to be admitted, or an admission denied signal if said packet call is not to be admitted; an admission queue for storing a packet call identity for at least one packet call; and a PRCH admission queue handler for determining whether to place said packet call identity on said admission queue in response to an admission denied signal being received from said at least one PRCH controller. - View Dependent Claims (22, 23, 24)
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Specification