Method for transmitting and storing downlink data, base station and terminal

A downlink data, terminal technology, applied in the field of communication, can solve the problem that the terminal cannot decode correctly

Active Publication Date: 2016-02-17
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0023] Embodiments of the present invention provide a method for transmitting and storing downlink data, a base station and a terminal to solve the defect that the terminal cannot be decoded correctly in the prior art

Method used

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  • Method for transmitting and storing downlink data, base station and terminal
  • Method for transmitting and storing downlink data, base station and terminal
  • Method for transmitting and storing downlink data, base station and terminal

Examples

Experimental program
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Embodiment 1

[0396] refer to figure 1 As shown, in the embodiment of the present invention, the first detailed process of transmitting downlink data is as follows:

[0397] Step 100: When determining that the downlink data is broadcast data, according to the N of the code blocks of the broadcast data cb Perform bit selection, where N cb K with the code block w Equal, N cb = K w ;

[0398] Step 110: Send broadcast data according to the selected bit.

[0399] In the embodiment of the present invention, there are many ways to determine that the downlink data is broadcast data. Optionally, the following ways can be used:

[0400] If the downlink data is data delivered to the physical layer on the PCH, then determining that the downlink data is broadcast data; and / or

[0401] If the downlink data is data delivered to the physical layer on the DL-SCH associated with the RA-RNTI, then determine that the downlink data is broadcast data; and / or

[0402] If the downlink data is delivered to ...

Embodiment 2

[0435] refer to figure 2 As shown, in the embodiment of the present invention, the second detailed process of transmitting downlink data is as follows:

[0436] Step 200: According to N of code blocks of downlink data cb Perform bit selection, where N cb K with the code block w Equal, N cb =K w ; or, N cb use is calculated, and K C = 1, K MIMO =1, C=1, M DL_HARQ is the maximum number of downlink HARQ processes, M limit =8, M is a preset value or a value notified by high-layer signaling, N soft is the total number of soft channel bits of terminals of the specified terminal type;

[0437] Step 210: Send downlink data according to the selected bits.

[0438] In the embodiment of the present invention, optionally, the downlink data is data delivered to the physical layer on the PCH; and / or;

[0439] Downlink data is data delivered to the physical layer on DL-SCH.

[0440] The terminal type receiving downlink data includes the specified terminal type and terminal ...

Embodiment 3

[0459] refer to image 3 As shown, in the embodiment of the present invention, the third detailed process of transmitting downlink data is as follows:

[0460] Step 300: When determining that the downlink data is broadcast data, according to N soft perform bit selection;

[0461] Step 310: Send downlink data according to the selected bits.

[0462] In the embodiment of the present invention, there are many ways to determine that the downlink data is broadcast data. Optionally, the following ways can be used:

[0463] If the downlink data is data delivered to the physical layer on the PCH, then determining that the downlink data is broadcast data; and / or

[0464] If the downlink data is data delivered to the physical layer on the DL-SCH associated with the RA-RNTI, then determine that the downlink data is broadcast data; and / or

[0465] If the downlink data is delivered to the physical layer on the DL-SCH associated with the SI-RNTI, it is determined that the downlink data ...

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Abstract

The invention relates to the technical field of communication, and discloses a method for transmitting and storing downlink data, a base station and a terminal. In the scheme, when the base station transmits the downlink data at each time, a bit selection manner adopted by the base station enables that the length and the start point of a sequence expected to receive in initial transmission (or repeat transmission) of the same code block by a terminal in any type are same to the length and the start point of a sequence to be sent by the same code block determined by a sending end, such that the terminal decodes reliably; if decoding is failed, the start point of the sequence in the initial transmission (or repeat transmission) of the same code block stored by the terminal at each time is the same to the start point of the sequence to be sent in the initial transmission (or repeat transmission) of the same code block determined by the sending end; the disadvantage that decoding cannot be carried out accurately due to the fact that storage cannot be carried out accurately when the terminal stores a retransmission code block of the same code block at each time can be avoided; and thus, the decoding accuracy of the terminal is increased.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method for transmitting and storing downlink data, a base station and a terminal. Background technique [0002] LTE (LongTermEvolution, long-term evolution) and LTE-A (LongTermEvolution-Advanced, long-term evolution-advanced version) standards define terminal (UserEquipment, user equipment) types, such as terminal type 1, terminal type 2, ..., terminal type 10 , different terminal types correspond to different uplink capabilities and downlink capabilities. [0003] For example, the downlink capabilities of terminal type 1 include: [0004] The maximum number of bits received in one TTI (TransmissionTimeInterval, transmission time interval) of the downlink shared channel DL-SCH transmission block is 10296 bits, and the maximum number of bits received in one transmission interval TTI of one downlink shared channel DL-SCH transmission block is 10296 bits, the tota...

Claims

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Application Information

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IPC IPC(8): H04L1/00
CPCH04L1/0067H04L1/1822H04L1/1874H04W8/22H04W72/23H04W72/30H04L1/0057H04L1/1812H04W68/02
Inventor 夏金环柯柏安马修·威廉·韦伯余政
Owner HUAWEI TECH CO LTD
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