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    • 6. 发明授权
    • Dynamic resource allocation and media access control for a wireless ATM network
    • 无线ATM网络的动态资源分配和媒体访问控制
    • US06895248B1
    • 2005-05-17
    • US09324367
    • 1999-06-02
    • Bora A. AkyolDonald C. Cox
    • Bora A. AkyolDonald C. Cox
    • H04L12/28H04L12/56H04Q7/20
    • H04W72/0446H04L12/5601H04L2012/5632H04W28/14H04W28/26H04W72/0413H04W74/00H04W74/04Y10S370/905
    • A resource allocation method for use in a wireless ATM network comprises receiving on a wireless signaling channel a request for access to a shared frequency-time sliced wireless medium. A channel matrix is then searched for a set of available frequency-time slots. The channel matrix represents a time frame within the shared frequency-time sliced wireless medium, and is used to keep track of resource allocation in the time-frequency sliced medium. The set of available time-slots is then allocated if the allocation does not violate a frequency switching constraint, and if the set of available frequency-time slots contains a number of slots no smaller than a requested number of slots. In a preferred embodiment of the invention, the searching step uses a greedy resource allocation strategy to search a channel-chunk matrix comprising a list of contiguous chunks of available time slots in each frequency of the shared frequency-time sliced wireless medium. The greedy resource allocation strategy comprises the following successive allocation steps: searching for a single contiguous set of available time slots in a single frequency, where the size of the set of available slots is equal to the requested size [60]; searching for a single contiguous set of available time slots in a single frequency, where the size of the set of available slots is greater than the requested size [64]; searching for separate chunks of available time slots in a single frequency [66]; and searching for separate chunks of available time slots in multiple frequencies [68]. Each allocation step comprises checking whether the allocation violates a frequency switching constraint.
    • 一种在无线ATM网络中使用的资源分配方法包括在无线信令信道上接收对共享的时分片式无线介质的访问请求。 然后,搜索一组可用频率时隙的信道矩阵。 信道矩阵表示共享时间分片无线介质内的时间帧,用于跟踪时间频率分片介质中的资源分配。 然后如果分配不违反频率切换约束,则分配可用时隙的集合,并且如果可用频率时隙的集合包含不少于所请求的时隙数量的时隙数量。 在本发明的优选实施例中,搜索步骤使用贪心资源分配策略来搜索包含共享时分片无线介质的每个频率中可用时隙的连续块的列表的信道块矩阵。 贪心资源分配策略包括以下连续分配步骤:在单个频率中搜索可用时隙的单个连续集合,其中可用时隙集合的大小等于所请求的大小[60]; 在单个频率中搜索单个连续的可用时隙集合,其中所述可用时隙集合的大小大于所请求的大小[64]; 在单个频率中搜索单独的可用时隙块[66]; 并在多个频率中搜索单独的可用时隙块[68]。 每个分配步骤包括检查分配是否违反频率切换约束。