Parameter determination method and terminal

A parameter determination and parameter technology, which is applied in the direction of digital transmission system, error prevention, electrical components, etc., can solve the problem that the terminal cannot correctly calculate the starting time of the uplink subframe, cannot meet service requirements, and lack flexibility.

Inactive Publication Date: 2017-11-21
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the FDD mode of 4G, the start times of the uplink and downlink subframes on the base station side are aligned. This setting lacks flexibility and cannot meet the service requirements in 5G, especially for URLLC services that require low latency.
[0004] However, after the time offset is introduced between the uplink and downlink subframes of the base station, the original method for determining the start time of the uplink subframe on the terminal side will become invalid, resulting in the terminal being unable to correctly calculate the start time of the uplink subframe, making the terminal Unable to perform normal uplink communication with the base station

Method used

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  • Parameter determination method and terminal

Examples

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Embodiment 1

[0042] The embodiment of the present invention provides a parameter determination method, such as figure 1 As shown, the method includes:

[0043] Step 101: Determine a target subframe, where the target subframe is any one of the uplink or downlink subframes of the corresponding terminal;

[0044] Specifically, when the base station and the terminal are in uplink synchronization, in order to determine the start time of the i-th uplink subframe, the UE determines the i-th subframe as a target subframe, so as to further obtain parameter information of the target subframe; Among them, i is a positive integer.

[0045] Step 102: Obtain a first parameter, a second parameter, and a third parameter corresponding to the target subframe, where the first parameter is used to characterize the start time of the terminal downlink target subframe, and the second parameter is used for Characterize the difference between the start time of the uplink target subframe of the base station and the star...

application example 1

[0066] Based on figure 2 In the illustrated network organization structure, the terminal UE first carries information such as control commands, reference signals, service data, and ACK / NACK on a determined uplink subframe. Such as image 3 As shown, the subframes are all subframes on the PUCH channel, and the subframes can carry one or more of control information, service data, reference information, and HARQ feedback information, and image 3 Middle T offset Is positive and T offset The value of is moderate. At this time, the start time of the uplink i-th subframe of Macro Bs is later than the start time of the downlink i-th subframe.

[0067] Macro Bs carries data on the i-th downlink subframe and sends it to the UE. Due to the propagation delay between the Macro Bs and the UE, the time when the UE receives the i-th downlink subframe is later than the time when the Macro Bs sends the i-th downlink subframe. UE learns T offset , The method of learning is as follows: learning ...

application example 2

[0070] Based on figure 2 The network organization structure shown, such as Figure 4 As shown, the subframes are all subframes on the PUCH channel, and the subframes can carry one or more of control information, service data, reference information, and HARQ feedback, and Figure 4 The start time of the i-th uplink subframe of the middle Macro Bs is earlier than the start time of the i-th downlink subframe, T offset Is negative and T offset Moderate.

[0071] UE learns T offset The method adopted is as follows: knowing through the system information of Macro Bs, knowing through the control information of Macro Bs, knowing in advance in a predefined way or other ways. The UE learns T after the uplink synchronization process (random access process) a , The T a Indicates the length of time that should be adjusted at the start of the UE uplink subframe, which is only related to the propagation delay of the UE and Macro Bs, and is related to T offset Not related to each other. The ...

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Abstract

The present invention discloses a method for determining parameters and a terminal. The method includes: determining a target subframe, where the target subframe is any subframe corresponding to the uplink or downlink of the terminal; acquiring the first parameter corresponding to the target subframe , a second parameter and a third parameter, the first parameter is used to characterize the starting time of the downlink target subframe of the terminal, and the second parameter is used to characterize the starting time of the uplink target subframe and the downlink target of the base station The difference between the starting moments of subframes, the third parameter is used to characterize the adjustment time length corresponding to the starting moment of the terminal uplink target subframe; according to the first parameter, the second parameter and / or the first The three parameters determine the start time of the uplink target subframe of the terminal.

Description

Technical field [0001] The present invention relates to the field of wireless communication, in particular to a method and terminal for determining parameters. Background technique [0002] With the rapid development of wireless communication network technology, the fifth generation (5G) communication system will surely penetrate all aspects from production to life. The 5G communication system provides the necessary material foundation for the transformation and transformation of industry and society. Its design requirements in terms of throughput, number of connected terminals, delay, mobility and energy consumption are much higher than the previous communication systems. The entire system design will face more challenges. [0003] The typical characteristic of 5G communication system is to tolerate diversified services, and the QoS requirements of each service are different. For example, 5G includes Enhanced Mobile Broadband (eMBB) and Massive Machine Type Communications (Massiv...

Claims

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Application Information

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IPC IPC(8): H04L1/16H04L1/18
CPCH04L1/1678H04L1/1854
Inventor 赵百轶毕峰张峻峰苟伟
Owner ZTE CORP
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