摘要:
The invention relates to a first communication device arranged to provide congestion indications to a second communication device. The first communication device comprises a control unit arranged to determine to apply an indicating congestion mechanism on a first radio bearer to the second communication device based on a quality of service setting of the first radio bearer. The control unit is further arranged to set a congestion threshold value and a first drop threshold value of a packet buffer associated to the first determined radio bearer. The congestion threshold value indicates that when buffered packets in the packet buffer exceeds the set congestion threshold value the control unit is arranged further to transmit over a transmitting arrangement at least one congestion indication to the second communication device. The first drop threshold value indicates a level of the packet buffer that when buffered packets exceeds the first drop threshold value the control unit is arranged to drop at least one packet.
摘要:
In one aspect, the invention provides an adaptive admission control method. In some embodiments, this method includes: (a) storing an admission control threshold value (ACTV) for a GBR capacity partition; (b) for at least a plurality of GBR bearers included in the GBR partition, determining a first performance value for the GBR bearer and determining whether the first performance value for the GBR bearer exceeds a first configured threshold; (c) determine a first percentage value identifying the percentage of GBR bearers included in the GBR capacity partition whose first performance value exceeds the first configured threshold; (d) comparing the first percentage value to a first performance threshold value; and (e) using the result of the comparison in determining whether the ACTV should be increased, decreased or remain the same.
摘要:
Network node (110) and method (600) in a network node (110), for admission control of a request for a radio access bearer to be received from a user equipment (120). The method (600) comprises monitoring (601) the achievement of quality of service requirement of an admitted radio access bearer, detecting (602) when the quality of service requirement of the admitted radio access bearer is not achieved, assessing (603) a reason why the quality of service of the admitted radio access bearer is not achieved, and determining (604) admittance of a further request for radio access bearer, based on the reason why the quality of service of the admitted radio access bearer is not achieved.
摘要:
Network node and method therein for admission control in a communication system applying shared channels for communication. The method comprises receiving a request for a bearer setup, and deciding whether to accept or reject the request for a bearer setup based on information on current bearers carrying data having a QoS value, and for which bearers a transmission of the data fulfills a criterion, the criterion representing a probability of violating the QoS value. Information on bearers carrying data which do not have a QoS value and information on bearers for which a transmission of data having a QoS value does not fulfill the criterion is disregarded.
摘要:
A set of radio resources are allocated to a first user equipment (110). The radio network node (130) receives a request for radio resources from a second user equipment (120) being associated with a first or second category. Furthermore, the radio network node (130) measures an inactivity time period of the first user equipment (110). Then, the radio network node (130) releases the set of radio resources when the inactivity time period exceeds a threshold to be applied dependent on the category of the request. The releasing of the set of radio resources is triggered by the request.
摘要:
Network node (110) and method (600) in a network node (110), for admission control of an additional radio access bearer based on load of control channel elements on a control channel, assigned by a scheduler (700) comprised in the network node (110). The method (600) comprises assigning (601), by the scheduler (700), control channel elements on the control channel for already admitted radio access bearers. Further, a first and a second load of the control channel is computed (606, 607) based on the usage of assigned control channel elements subframes on which both downlink assignments and uplink grants are enabled, and on which downlink assignments are enabled, respectively. If any of the first or second loads exceeds a respective threshold value, the radio access bearer to be admitted is rejected (609A).
摘要:
Network node (110) and method (600) in a network node (110), for admission control of a request for a radio access bearer to be received from a user equipment (120). The method (600) comprises monitoring (601) the achievement of quality of service requirement of an admitted radio access bearer, detecting (602) when the quality of service requirement of the admitted radio access bearer is not achieved, assessing (603) a reason why the quality of service of the admitted radio access bearer is not achieved, and determining (604) admittance of a further request for radio access bearer, based on the reason why the quality of service of the admitted radio access bearer is not achieved.
摘要:
A modified token bucket algorithm in a rate shaping function of a wireless communication network allows for the “borrowing” of tokens, creating the possibility of a token debt, or a token bucket with a negative Token Bucket Counter (TBC) value. In this modified algorithm, an incoming packet is passed along so long as the TBC is positive, even if the packet must “borrow” some tokens, driving the TBC negative. Subsequent incoming packets are stalled until the TBC reaches a positive value. In one embodiment, the modified token bucket algorithm is not applied to a separate rate shaper, but rather to a queue size limiter that operates with a scheduler on a single queue. The inventive scheduler and queue size limiter deliver fewer, larger packets for transmission, allowing for more efficient packing within transmission frames (reducing or eliminating required padding), and allowing other traffic to be scheduled, thus increasing system throughput.
摘要:
Network node and method therein for admission control in a communication system applying shared channels for communication. The method comprises receiving a request for a bearer setup, and deciding whether to accept or reject the request for a bearer setup based on information on current bearers carrying data having a QoS value, and for which bearers a transmission of the data fulfills a criterion, the criterion representing a probability of violating the QoS value. Information on bearers carrying data which do not have a QoS value and information on bearers for which a transmission of data having a QoS value does not fulfill the criterion is disregarded.
摘要:
Network node (110) and method (600) in a network node (110), for admission control of an additional radio access bearer based on load of control channel elements on a control channel, assigned by a scheduler (700) comprised in the network node (110). The method (600) comprises assigning (601), by the scheduler (700), control channel elements on the control channel for already admitted radio access bearers. Further, a first and a second load of the control channel is computed (606, 607) based on the usage of assigned control channel elements subframes on which both downlink assignments and uplink grants are enabled, and on which downlink assignments are enabled, respectively. If any of the first or second loads exceeds a respective threshold value, the radio access bearer to be admitted is rejected (609A).