CN-121985341-A - Method for adaptively scaling coverage area of wireless cell

CN121985341ACN 121985341 ACN121985341 ACN 121985341ACN-121985341-A

Abstract

The invention relates to the technical field of wireless communication coverage, in particular to a method for adaptively scaling the coverage of a wireless cell, a base station in the invention ensures users by identifying key points, and measuring and calculating the minimum downlink transmitting power required by maintaining the service quality in real time, dynamically adjusting the downlink transmitting power to shrink or expand the coverage area of the cell, synchronously informing the adjusted power to the terminal through broadcasting information, and ensuring the accurate estimation of the terminal path loss. The method can obviously reduce the same-frequency interference of the high-power 5G base station to the same-frequency cell and the background noise rise of different-frequency communication equipment under the scene of the integration of the industry user mobile networking and the multi-type communication equipment, improves the communication quality and stability of the whole network, realizes the intelligent linkage of the power and the service quality on the premise of not modifying the terminal and not depending on the network rule and the network optimization, and ensures the service continuity of key users.

Inventors

JIN HONGLONG
GUO PENGLIANG
TANG HUA
LIU YUGUI
FANG HAO
XIONG ZHENYU
HAN JINGBIN
SU YINGBIN
SU KAI

Assignees

中国人民解放军63620部队

Dates

Publication Date: 20260505
Application Date: 20260320

Claims (8)

1. A method for adaptively scaling a coverage area of a wireless cell, comprising the steps of: S1, identifying key guarantee users; s2, calculating the minimum downlink transmitting power required by maintaining the current service according to the service quality requirement of the key guarantee user; s3, adjusting the downlink transmitting power of the base station according to the minimum downlink transmitting power; and S4, informing the terminal of the adjusted downlink transmitting power through broadcasting information.
2. The method for adaptively scaling wireless cell coverage according to claim 1, wherein said identifying the key guard user in S1 comprises one or more of the following: identifying through an International Mobile Subscriber Identity (IMSI) or a Public Land Mobile Network (PLMN); identifying through a special bearer established by a user; The identification is performed by traffic model analysis or deep packet inspection of the user plane data packet.
3. The method for adaptively scaling a coverage area of a wireless cell according to claim 2, wherein said calculating a minimum downlink transmit power required to maintain a current service in S2 comprises: Estimating an adjustable quantity of the downlink transmitting power of the base station according to one or more parameters of the current downlink flow, the spectrum efficiency and the quantity of the residual resources in the system bandwidth of the key guarantee user; for delay insensitive traffic, the spectral efficiency is allowed to be reduced in exchange for a larger amount of downlink power reduction.
4. A method for adaptively scaling a coverage area of a wireless cell according to claim 3, wherein said adjusting the downlink transmit power of said base station in S3 comprises: When the power needs to be reduced, the relevant parameters of downlink scheduling are fixed to be the values of the power after the power is reduced, and then the downlink power control module is instructed to reduce the transmitting power; when the power to be lifted is judged, the downlink power control module is directly indicated to lift the transmitting power, and the lifting upper limit is the maximum downlink transmitting power of the base station.
5. The method for adaptively scaling a coverage area of a wireless cell according to claim 4, wherein notifying the terminal of the adjusted downlink transmission power through broadcast information in S4 comprises: And broadcasting the adjusted downlink transmitting power value to the terminal through a ss-PBCH-BlockPower field in a system information block SIB1 so as to update the path loss estimation by the terminal.
6. The method for adaptively scaling a coverage area of a wireless cell of claim 5, further comprising S5: And measuring the uplink sounding reference signal strength of the key guarantee user, and judging the position or signal quality of the key guarantee user relative to the base station according to a measurement result.
7. The method for adaptively scaling a coverage area of a wireless cell of claim 5, further comprising S5: And receiving a measurement report reported by the key guarantee user, wherein the measurement report comprises A1 event information or A2 event information, and judging the position or signal quality of the key guarantee user relative to the base station according to the measurement report.
8. A method of adaptively scaling a radio cell coverage area as in claim 6 or 7, further comprising S6: presetting a signal strength threshold; Triggering to reduce the downlink transmitting power when the measured uplink signal strength or downlink signal strength is higher than the threshold value; And triggering to raise the downlink transmitting power when the measured uplink signal strength or downlink signal strength is lower than the threshold value.

Description

Method for adaptively scaling coverage area of wireless cell Technical Field The invention relates to the technical field of wireless communication coverage, in particular to a method for adaptively scaling wireless cell coverage. Background Currently, when an industry user (such as emergency communication, field operation, military exercises, etc.) performs mobile networking in a coverage area without an operator, a high-power 5G base station (for example, 4×60W) is generally deployed to meet temporary coverage requirements. Because of the dynamic and temporary networking scenario, strict network regulation and optimization cannot be implemented like an operator network, and the base station transmitting power is usually maintained to operate at a high level. Meanwhile, a plurality of different-frequency communication devices such as satellite communication, private network radio stations and the like often coexist in the communication area. When the important guarantee user is located in the neighborhood of the cell and develop the high-flow service, if the high-power base station continuously transmits full power, not only is unnecessary energy consumption wasted in the cell caused, but also serious co-channel interference can be generated on the co-channel adjacent cell, and the receiving base noise of the inter-channel communication equipment is obviously raised, so that the whole network communication quality is rapidly reduced, and the cooperative working capacity of the multi-type equipment is seriously affected. Aiming at base station coverage adjustment, the prior art mainly focuses on energy-saving schemes of an operator network, for example, small area coverage is gradually contracted in a mode of channel shutdown, carrier shutdown or deep dormancy in a night service valley period. However, the schemes are based on the premise of fixed station address and strict wireless environment treatment, the power adjustment strategy is static and timing triggering, the operation cost is reduced instead of interference suppression, and the scheme cannot be completely suitable for the characteristics of dynamic change of the user position and real-time fluctuation of service requirements in the mobile networking scene of the industry users. More importantly, the existing scheme does not relate to the identification of a key guarantee user, and a linkage mechanism between the service quality guarantee and the transmitting power is not established, so that user experience is always sacrificed when the power is reduced, and the terminal path loss estimation is not considered to be updated synchronously through broadcast information, so that the self-adaptive failure of a terminal link is caused. Therefore, a method for adaptively scaling the coverage of a wireless cell is needed, so that the downlink transmitting power of a high-power base station is dynamically reduced while the service quality of key users is ensured, the co-frequency/inter-frequency interference problem is fundamentally solved, and the communication efficiency of the whole network is improved. Disclosure of Invention Aiming at the defects existing in the prior art, the invention aims to provide a method for adaptively scaling the coverage area of a wireless cell so as to solve the problem of co-frequency/inter-frequency interference existing in the prior art. In order to achieve the above purpose, the present invention adopts the following technical scheme: A method of adaptively scaling wireless cell coverage, comprising the steps of: S1, identifying key guarantee users; s2, calculating the minimum downlink transmitting power required by maintaining the current service according to the service quality requirement of the key guarantee user; s3, adjusting the downlink transmitting power of the base station according to the minimum downlink transmitting power; and S4, informing the terminal of the adjusted downlink transmitting power through broadcasting information. Further, the identifying the key guarantee user in S1 includes one or more of the following ways: identifying through an International Mobile Subscriber Identity (IMSI) or a Public Land Mobile Network (PLMN); identifying through a special bearer established by a user; The identification is performed by traffic model analysis or deep packet inspection of the user plane data packet. Further, the calculating in S2 the minimum downlink transmission power required for maintaining the current service includes: Estimating an adjustable quantity of the downlink transmitting power of the base station according to one or more parameters of the current downlink flow, the spectrum efficiency and the quantity of the residual resources in the system bandwidth of the key guarantee user; for delay insensitive traffic, the spectral efficiency is allowed to be reduced in exchange for a larger amount of downlink power reduction. Further, in S3, adjusting the downlink transmit power of the base stat