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A conflict-free wireless network temporary identification allocation method

A temporary identification and wireless network technology, applied in the field of mobile communication, can solve the problem of high RNTI allocation conflict rate, achieve the effect of improving online capacity and comprehensive performance, reducing computational complexity, and strong practicability

Active Publication Date: 2020-02-14
BEIJING UNIV OF POSTS & TELECOMM
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AI Technical Summary

Problems solved by technology

[0010] In order to solve the problem of high RNTI allocation conflict rate in LTE and other systems, the present invention proposes a conflict-free wireless network temporary identifier allocation method, which can prevent RNTI allocation from conflicts, effectively improve the RNTI allocation success rate and physical control resource utilization

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  • A conflict-free wireless network temporary identification allocation method
  • A conflict-free wireless network temporary identification allocation method
  • A conflict-free wireless network temporary identification allocation method

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Embodiment Construction

[0050] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0051] The present invention discloses a method for allocating temporary identifiers of wireless networks without conflicts. First, an unoccupied UE-specific search space is randomly allocated, and then the position index of the UE-specific search space is used to solve the problem based on the congruence equation. The optimal (or solve the congruence equation in advance to obtain the result, and list it for query) inverse mapping calculation method calculates the RNTI and assigns it to the UE to complete the RNTI allocation.

[0052] Specific process such as figure 1 Shown: First, calculate the total number and usage of CCEs in the kth subframe in the current radio frame; select an appropriate aggregation level L for the PDCCH of the UE that needs to transmit messages in the subframe; according to the usage of the CCEs And the aggregation level L randomly s...

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Abstract

The invention discloses a method for allocating a non-conflict wireless network temporary identifier, which belongs to the technical field of mobile communication. This method first analyzes the protocol of the wireless communication system, and obtains the usage of the control channel element CCE and its total number N in the kth subframe in a certain physical downlink wireless frame CCE,k ; For the PDCCH of a certain UE that needs to transmit data in the kth subframe, select the appropriate aggregation level L to bring into the total number of CCEs N CCE,k , get the total number N of the UE-specific search space PDCCH,k,L ; Then according to the usage of CCE, the value of the aggregation level L and the total number of UE-specific search spaces N PDCCH,k,L , to obtain the unoccupied UE-specific search space. Finally, randomly select a UE that is allocated to transmit data from the unoccupied UE-specific search space, and record the position index of the allocated search space as S PDCCH,k,L , and substituting it into an optimized formula based on the congruence equation to calculate the RNTI allocated to the UE. The invention has low calculation complexity, strong practicability and high utilization efficiency of physical control resources.

Description

technical field [0001] The invention belongs to the technical field of mobile communication, and in particular relates to a method for allocating a non-conflict wireless network temporary identifier. Background technique [0002] The Long Term Evolution (LTE) standard and the latest 5G Release 15 of the 3rd Generation Partnership Project (3GPP) both support the use of the Radio Network Temporary Identifier (RNTI) as A physical downlink control channel (Physical Downlink Control Channel, PDCCH) of each user equipment (User Equipment, UE) is flexibly scheduled. Each UE will be assigned one or more RNTIs during the random access process with the base station, which will be used to calculate the position of its dedicated search space in each physical downlink data frame, and then search in the dedicated search space Its proprietary PDCCH. According to the LTE standard, in each physical downlink data subframe, the mapping calculation of the RNTI to the UE-specific search space ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W8/26H04W72/04H04W72/08H04W74/08H04L5/00H04W72/54
CPCH04L5/001H04L5/0058H04W8/26H04W72/0446H04W74/085H04W72/54
Inventor 冯志勇黄赛严正行张轶凡宁帆
Owner BEIJING UNIV OF POSTS & TELECOMM
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