Time slot ensuring mechanism time slot distribution method and equipment
A technology of time slot guarantee and time slot allocation, which is applied in the communication, electrical components, wireless communication and other directions between multiple stations, can solve the problems of limiting the utilization rate of GTS, waste of resources, and inability to send data in time, so as to improve the GTS. The effect of utilization and reasonable distribution
Active Publication Date: 2011-12-21
HUAWEI TECH CO LTD +1
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Problems solved by technology
However, under normal circumstances, the number of nodes in the network is more than the maximum number of GTSs that can be allocated. In this way, when these 7 GTSs are all occupied, if there are other nodes that request to send data GTS, the network coordinator will reject the request because there is no remaining GTS, which will cause the node's data to be unable to be sent in time, limiting the utilization of GTS
In addition, since each GTS includes at least one time slot, that is, the minimum granularity of a GTS is 1 time slot, then for some nodes with a lower transmission rate, the applied GTS cannot be fully utilized, resulting in a waste of resources
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[0041]The implementation idea of the embodiment of the present invention is: receive the GTS request from the requesting node, judge whether the remaining time slots that can be used for GTS allocation in the current superframe meet the requirements of the GTS request, and if not, then use the shared GTS allocation method as the request The node allocates the GTS time slot, that is, the allocation request node shares the allocated GTS with the node that is currently allocated to the GTS; if it is satisfied, the GTS time slot is allocated to the requesting node according to the existing GTS allocation method. The executor of the above steps in the embodiment of the present invention is the network coordinator.
[0042] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples.
[0043] figure 2 It is the general flow...
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The embodiment of the invention discloses a time slot allocation method for a time slot guarantee mechanism (GTS). A GTS request from a requesting node is received to judge whether the residual time slots used for GTS allocation in the current superframe meet the requirement for the GTS request or not; if the residual time slots do not meet the requirement for the GTS request, then the GTS time slots are allocated to the requesting node in the mode of sharing the GTS allocation; otherwise, the GTS time slots are allocated to the requesting node in the existing GTS allocation mode. The embodiment of the invention also discloses a GTS allocation device simultaneously. The application of the method and device can realize efficient and reasonable allocation of GTS time slot resources and improve the GTS utilization rate.
Description
technical field [0001] The present invention relates to wireless personal area network (WPAN) technology, in particular to a time slot guarantee mechanism (GTS) time slot allocation method and equipment. Background technique [0002] WPAN is a low-speed, low-power, low-complexity network that includes a large number of wireless nodes. Its potential applications include sensors, remote control toys, smart badges, remote controls, and home automation devices. The Institute of Electrical and Electronics Engineers (IEEE) 802.15.4 standard has formulated a media access control (MAC) layer protocol for the realization of WPAN, and its transmission range is about 10m, which is the typical transmission range of WPAN. This standard specifies three optional data rates of WPAN: 250kbit / s, 40kbit / s and 20kbit / s; two addressing modes: 16-bit and 64-bit addressing; three working frequency bands: 2.4GHz frequency band 16 channels, 10 channels on the 915MHz band and 1 channel on the 868MHz...
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IPC IPC(8): H04W72/04H04B7/26
CPCH04L12/66
Inventor 刘培徐平平陈华敏
Owner HUAWEI TECH CO LTD