| 摘要 |
<p>A mobile radio communication terminal device can suppress increase in memory capacity and realize a MAC-hs buffer and an RLC buffer as a single physical memory. A MAC-hs processor separates packet data of MAC-hs PDU units that are received as input into packet data of RLC PDU units and then supply these data together with sequence numbers to a shared memory control device. A shared memory is a single physical memory that functions as the MAC-hs buffer and the RLC buffer. The shared memory control device assigns memory addresses of the shared memory in RLC PDU units in advance, and writes packet data of RLC PDU units that are applied as input from the MAC-hs processor to the corresponding memory addresses of the shared memory.
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