Connection reconstruction method, device, terminal and storage medium

Abstract

The present disclosure provides a connection reestablishment method, device, terminal and storage medium, the method comprising: when the terminal loses uplink synchronization on the first uplink carrier within the range of the supported first uplink frequency band, on the first uplink carrier Send a random access request to the network device; the first uplink carrier is a carrier determined by the network device within the first uplink frequency range in the frequency pairing combination supported by both the terminal and the network device; the random access request on the first uplink carrier When the access request fails, obtain the first failure times of random access request failures; when the first failure times reach the preset threshold value, determine the first target uplink frequency range from the second uplink frequency range of the frequency band pairing combination, And sending a random access request to the network device on the second uplink carrier within the first target uplink frequency range.

Description

technical field [0001] The present disclosure relates to the field of information management, and in particular to a connection reestablishment method, device, terminal and storage medium. Background technique [0002] In 3G and 4G networks, the uplink coverage of the system is poorer than the downlink coverage, which affects the transmission of uplink data. In 5G networks, the gap between the two is more obvious. Therefore, it is necessary to consider the high and low frequency bands. Used together, that is, when the uplink coverage of the high frequency band itself is limited, the uplink frequency of the low frequency band is used for uplink data transmission. Among them, the high frequency band can include 28GHz, 3.5GHz and other frequencies to provide capacity, and the low frequency band can include 900MHz and other frequencies , to provide an override. [0003] In practical applications, 3300-3800MHz and 880-915MHz can be paired for use. For example, downlink data is c...

AI Technical Summary

Problems solved by technology

[0003] In practical applications, 3300-3800MHz and 880-915MHz can be paired for use. For example, downlink data is carried in the 3300-3800MHz frequency range, uplink data is carried in the 3300-3800MHz and / or 880-915MHz frequency range, and downlink data is carried in the 3300MHz frequency range. -3800MHz frequency range bearer, but if the terminal works in the 3300-3800MHz frequency band, when the terminal moves to the edge of its coverage, if the base station does not assign uplink frequency resources with wider coverage to the terminal in time (such as 880-915MHz) , the terminal will experience uplink out-of-sync, resulting in link failure and call drop

At this time, the terminal will re-initiate the re-establishment request on the out-of-sync uplink carrier, and when the terminal loses uplink synchronization at 3300-3800MHz, it often has left the 3300-3800MHz uplink coverage area and continues to initiate within the uplink frequency range Reconstruction requests may fail to work, causing the terminal to continue to apply for connection reestablishment. On the one hand, it will cause the terminal to consume power, and on the other hand, it will cause the interruption of terminal services.

Images