Method and device for scheduling packet services
A scheduling method and technology for grouping services, applied in the field of communication, can solve problems such as channel environment deterioration, GBR and DiscardTimer not being satisfied at the same time, and stream services being distinguished.
Active Publication Date: 2012-03-28
DATANG MOBILE COMM EQUIP CO LTD
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Problems solved by technology
[0019] 1. The scheduling parameter fails to comprehensively reflect the impact of the two parameters GBR and DiscardTimer on service QoS, which will cause the GBR and Discard Timer of some services to not be satisfied at the same time;
[0020] 2. The lower limit and upper limit of the relevant parameters that affect the scheduling parameters are not limited, and it is easy to cause the scheduling failure due to the deterioration of the channel environment or the access of new users, which will cause the scheduler to fail to restore the normal scheduling judgment state for a long time;
[0022] 4. If the scheduling algorithm can ensure that the MAC-hs SDUs buffered in the queue are not discarded as much as possible, the effect of the algorithm on reducing the transmission delay of the service is not obvious. In addition, if the actual scheduling parameter value changes in a large range, the effect of the scheduling decision It may not be in line with expectations, and it may not be possible to clearly distinguish the priorities of streaming services from other services in actual situations
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[0057] Below in conjunction with accompanying drawing and embodiment, the specific embodiment of the present invention is described in further detail:
[0058] The scheduling method of the packet service proposed by the present invention comprises the following steps:
[0059] According to the type of business, the business is divided into flow type, interactive type and background type;
[0060] Update the value of the scheduling parameter Td for the different service types of the kth user, and the scheduling parameter Td of the streaming service ik =Max[(T_GBR ik -F ik ), (α*T_RT ik -Tm ik )], i∈1...I, k∈1...K, the scheduling parameter Td of the interactive service ik =T_RT ik -Tm ik , i∈1...I, k∈1...K, the scheduling parameter Td of the background business ik The value is any negative number, where I is the number of queues of the kth user, K is the number of online users in the cell, T_GBR ik The time period for queue i to actually send data, T_RT ik is the maxim...
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The invention discloses a method for scheduling packet services. The method comprises the following steps of: dividing the services into a stream class, an interactive class and a background class according to the service type; updating a scheduling parameter Td value according to different service types; calculating the Td value corresponding to each queue of each user, calculating the maximum value of the Td value of each queue of each user, and according to the maximum value, selecting the service for scheduling by the system. The invention also discloses a flow control method and a devicefor scheduling the packet services. The technical scheme can ensure the service quality QoS requirements of the packet services; for the stream class or interactive class services, the technical scheme can control the transmission delay when a scheduler judges and properly control a stream controller end, so that the judging pressure of the scheduler can be alleviated.
Description
technical field [0001] The present invention relates to the technical field of communication, and in particular the present invention relates to a scheduling algorithm of a mobile communication system. Background technique [0002] With the increasing demand of people for exchanging information, mobile communication methods based solely on voice can no longer meet people's requirements. In order to provide higher-speed and more advanced wireless data communication services on the basis of existing networks, there emerged Various enhancements for mobile data communications. HSDPA (High Speed Downlink Packet Access, High Speed Downlink Packet Access) is an enhanced technology proposed by 3GPP (3rd Generation Partnership Project, 3rd Generation Partnership Project) to meet high-speed data communication. [0003] HSPDA can carry various services. In order to provide high-quality services to users, the HSDPA system needs to treat different services QoS (Quality of Service, s...
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IPC IPC(8): H04L12/56H04L12/863
Inventor 阮磊峰孙军帅沈雅娜张怡束超
Owner DATANG MOBILE COMM EQUIP CO LTD