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下面是协议25.321 V7.10.0中的一段,求各位神仙帮我简单理解一下,我是通信菜鸟  (进入论坛模式)
提问者:ewinda1989   |  提问时间:2012-10-12 10:11
11.6.2.3.2 Reordering functionality
If no timer T1 is active:

- thetimer T1 shall be started when a MAC-hs PDU with TSN > next_expected_TSN iscorrectly received.

- T1_TSNshall be set to the TSN of this MAC-hs PDU.

If a timer T1 is already active:

- noadditional timer shall be started, i.e. only one timer T1 may be active at agiven time.

The timer T1 shall be stopped if:

- theMAC-hs PDU with TSN = T1_TSN can be delivered to the disassembly entity beforethe timer expires.

When the timer T1expires and T1_TSN >next_expected_TSN:

- allcorrectly received MAC-hs PDUs with TSN > next_expected_TSN up to andincluding T1_TSN-1 shall be delivered to the disassembly entity;

- allcorrectly received MAC-hs PDUs up to the next not receivedMAC-hs PDU shall be delivered to the disassembly entity.

- next_expected_TSNshall be set to the TSN of the next not received MAC-hs PDU.

When the timer T1 is stopped or expires,and there still exist some received MAC-hs PDUs that can not be delivered tohigher layer:

- timerT1 is started

- setT1_TSN to the highest TSN among those of the MAC-hs PDUs that can not bedelivered.
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too difficutl ot understand
回应该答案 (0)  |  回答者:cookil   |  2012-10-16 09:39
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