Method and device of bit collection and interlacing for mixed automatic retransmission request

Abstract

The invention relates to a method and a device of bit collection and interlacing for a mixed automatic retransmission request. The method is characterized in that defining a bit collection and interlacing rectangle as a before data part and an after data part, dividing the data bit into eight sequences and respectively writing in eight memory units; and subsequently reckoning the eight memory units as an integral memory to process; and finally carrying out bit scrambling and physical signal channel mapping process. A device utilizing the method comprises a bit separation module, wherein the output end of the bit separation module is connected with a three-way rate adaption module; the output end of the three-way rate adaption module is connected to a bit collection module; the output end of the bit collection module is connected to the eight storage units; the control end of the eight storage units is connected with a bit collection and output control unit; and the output ends of the storage units are connected to the input end of a rear level bit scrambling and physical signal channel mapping processing unit. Hence, the cache between the rate adaptation module and the bit collection module is not required to increase to realize the bit collection and interlacing of the mixed automatic retransmission request.

Description

technical field [0001] The present invention relates to a method and device for bit collection and interleaving in the third generation mobile communication system, in particular to a kind of hybrid automatic repeat request bit collection for TD-SCDMA (Time Division Synchronous Code Division Multiple Access) high-speed uplink packet access and methods and apparatus for interweaving. Background technique [0002] With the completion of 3GPP HSDPA (High Speed ​​Downlink Packet Access) standardization, the 3G (third generation mobile communication) system has greatly improved its ability to support downlink packet data services. For the performance requirements of uplink transmission, 3GPP applies key technologies such as adaptive modulation and coding, hybrid automatic repeat request (HARQ), high-order modulation and fast scheduling to uplink packet data services on the basis of HSDPA specifications, thus forming HSUPA ( High Speed ​​Uplink Packet Access, High Speed ​​Uplink ...

AI Technical Summary

Problems solved by technology

Using the method in Figure 4 increases the overhead of 3 larger storage resources

[0029] 2. Because there are many arrangements of bit collection and interleaving rectangles, even if bit collection is done after data caching, complex control circuits are required to realize it, which will inevitably increase logic overhead and cause waste of resources, and the caching method needs to be completed in two stages , reduces the efficiency of the circuit

Although this method does not need to cache all the rate-matched data, it reduces some storage resources compared with the method shown in Figure 4, but there is a lot of hardware overhead for the three FIFOs with a bit width of 1 and the control logic. At the same time, the FIFO The state of the turbo encoder also affects the work of the turbo encoder, which also increases the execution time overhead

[0031] 4. The specification defines bit operations, and the existing technology cannot effectively save hardware resources through the bit-addressed caching method

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