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IEEE 802.16m amendment is being drafted to meet the 4G network requirements as an extension to 802.16e-2005. In 802.16e, a Subscriber Station (SS) can have multiple connections to a Base Station (BS) for supporting different services simultaneously. SS negotiates sleep-mode with BS by exchange of management information for one or more connections per active Power Saving Class Identifier (PSC_ID) belonging...
Mobile stations (MS) with active UGS connections are usually not polled for their non-UGS data. If the MS wishes to be polled for non-UGS data then it needs to set the poll-me (PM) bit to 1 in the Grant Management Sub-header. The IEEE standard 802.16e describes the method of setting PM bit to 1. However, it does not specify when to turn this bit to 0. If it remains 1, then after transmission of non-UGS...
Sleep mode is a key feature introduced in IEEE 802.16e standard, which ensures power-efficient operation of battery operated mobile devices. The 802.16e standard does not define when to take decision to trigger sleep mode. However to the best of our knowledge some published works define waiting time threshold as a time for which mobile subscriber station (MSS) waits before entering into sleep mode,...
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