WO2011116688A1 - Procédé et dispositif pour l'égalisation de la charge de porteuses - Google Patents

Procédé et dispositif pour l'égalisation de la charge de porteuses Download PDF

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Publication number
WO2011116688A1
WO2011116688A1 PCT/CN2011/072055 CN2011072055W WO2011116688A1 WO 2011116688 A1 WO2011116688 A1 WO 2011116688A1 CN 2011072055 W CN2011072055 W CN 2011072055W WO 2011116688 A1 WO2011116688 A1 WO 2011116688A1
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WIPO (PCT)
Prior art keywords
carrier
load
throughput
lowest
current
Prior art date
Application number
PCT/CN2011/072055
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English (en)
Chinese (zh)
Inventor
刘阳
赵孟凯
Original Assignee
电信科学技术研究院
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Publication date
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Publication of WO2011116688A1 publication Critical patent/WO2011116688A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0044—Arrangements for allocating sub-channels of the transmission path allocation of payload
    • H04L5/0046—Determination of how many bits are transmitted on different sub-channels

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method and device for carrier load balancing. Background technique
  • the SDCA (Slow Dynamic Channel Allocation) algorithm is a resource selection algorithm for assigning new target resources to users when applying for new resources or changing existing resources in a mobile communication system.
  • the SDCA algorithm can prioritize the available alternative resources according to different strategies for use by algorithm modules such as admission, handover or reconfiguration.
  • the current SDCA algorithm for HSDPA (High Speed Downlink Packet Access) or HSUPA (High Speed Uplink Packet Access) carrier, the user condition changes rapidly due to the shared channel. Therefore, generally only the power/interference or BRU (Basic Resource Unit) occupancy of the time slot occupied by the control channel is considered.
  • BRU Base Resource Unit
  • Step S101 Receive a public measurement report of a base station.
  • the periodic measurement report sent by the receiving base station according to a certain period.
  • Step S102 Calculate a priority factor of each carrier, and update a list of carrier priorities.
  • the corresponding carrier with the highest priority is selected for the user.
  • the control channel is fixedly allocated after the cell is established, and the configuration of each carrier is generally the same; and the accompanying channel is a dedicated channel, and the occupancy situation and the use of the carrier shared channel are not directly related. Therefore, the current algorithm may cause each carrier to have a similar priority in the SDCA algorithm, but the carrier actual throughput load difference is large.
  • the system may access the user to a carrier whose sputum load is nearly saturated, so that the load situation between the carriers is further unbalanced.
  • the present invention provides a method and device for carrier load balancing, which is used to solve the problem that the load of each carrier is unbalanced due to the existing dynamic channel allocation algorithm in the HSPA system.
  • an aspect of the present invention provides a method for carrier load balancing, including:
  • an embodiment of the present invention further provides a device for carrier load balancing, including:
  • An acquiring module configured to acquire a current transmit power/receive power of the carrier, and/or a number of users currently accessed by the carrier, and/or a current throughput of the carrier shared channel;
  • a determining module configured to: according to the current transmit power/receive power of the carrier acquired by the acquiring module, and/or the number of users currently accessed by the carrier, and/or the current throughput of the carrier shared channel, according to the setting module Set a carrier load calculation rule to determine the current load of each carrier;
  • an equalization module configured to perform load balancing on users in each carrier according to the current load of each carrier determined by the determining module.
  • the present invention has the following advantages:
  • the transmission and reception power, the throughput, and the number of users of the carrier are more balanced, which can avoid the degradation of the service quality on the carrier with heavy load, and improve the resource utilization rate. It also contributes to the stability of hardware devices.
  • FIG. 2 is a schematic flow chart of a method for carrier load balancing according to an embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of a device for carrier load balancing according to an embodiment of the present invention.
  • the present invention provides a corresponding solution for comprehensively considering the influence of multiple factors, and achieving carrier load balancing, in the case of carrier allocation in the prior art solution, which may cause unbalanced carrier load and affect service quality. .
  • FIG. 2 is a schematic flowchart of a method for carrier load balancing according to an embodiment of the present disclosure, where the method specifically includes the following steps:
  • Step S201 Determine a current load of each carrier according to a carrier load calculation rule according to a current carrier transmit power/reception power, and/or a number of users currently accessed by the carrier, and/or a current throughput of the carrier shared channel.
  • this step can preset the corresponding trigger condition, that is, set the trigger condition of the carrier load calculation, as long as the trigger condition is reached, step S201 will be triggered.
  • the trigger conditions for calculating the carrier load specifically include:
  • a new user requests access to an HSDPA carrier or HSUPA carrier or HSPA carrier; or,
  • the current HSDPA carrier or HSUPA carrier or HSPA carrier has users in the hold phase, and the carrier load calculation period is reached.
  • the HSDPA carrier is specifically a carrier that has an HS-PDSCH (High-Speed Physical Downlink Shared Channel) in the downlink; the HSUPA carrier is specifically an E-PUCH (Enhanced Physical Uplink Channel).
  • the carrier of the HSPA carrier is a carrier that has a shared channel in the uplink and downlink directions.
  • this step is further divided into the following three cases: Case 1: When a new user requests to access the HSDPA carrier, the specific processing procedure is as follows: Obtaining the current transmit power of each HSDPA carrier. If there is only one HSDPA carrier with the lowest transmit power, the load of the HSDPA carrier with the lowest transmit power is determined to be the lowest; if there are multiple HSDPA carriers with the lowest transmit power, or the transmit power of each HSDPA carrier is the same Obtaining a plurality of HSDPA carriers with the lowest transmit power, or the number of users currently accessing each HSDPA carrier with the same power. If there is only one HSDPA carrier with the least number of users currently accessed, the number of users currently accessed is the least. The HSDPA carrier has the lowest load;
  • the load is the lowest.
  • the load of one HSDPA carrier that determines the current application policy of the shared channel is the lowest, specifically:
  • the current throughput application strategy of the shared channel is to maximize the cell throughput, it is determined that the load of the HSDPA carrier with the lowest throughput of the shared channel is the lowest;
  • the throughput of each HSUPA carrier is obtained, and the load of the HSUPA carrier with the lowest throughput is determined to be the lowest.
  • Case 3 When there are users in the hold phase of the current HSDPA carrier or HSUPA carrier or HSPA carrier, and the carrier load calculation period is reached, the specific processing procedure is as follows: Determining the current transmit power/receive power of each carrier that is in the hold phase and reaching the carrier load calculation period, and/or the number of users currently accessed by the carrier, and/or the current throughput of the carrier shared channel;
  • the carrier with the largest load and the carrier with the lowest load are determined.
  • the specific content of the trigger condition for the carrier load calculation described above may be set and adjusted according to actual needs, and such changes do not affect the protection scope of the present invention.
  • the difference between the maximum transmission power/reception power and the minimum transmission power/reception power exceeds the difference value of the transmission power/reception power, it is determined that the load of the carrier having the largest transmission power/reception power is the largest, and it is determined that the transmission is minimum.
  • the carrier of power/receive power has the lowest load;
  • the load of the carrier having the largest throughput is the largest, and the load of the carrier having the smallest throughput is determined to be the lowest.
  • the load of the carrier having the largest transmit power/receive power is determined to be the maximum, and the minimum transmit power is determined/ The carrier of the received power has the lowest load;
  • the ratio of the maximum number of access users to the minimum number of access users exceeds the threshold of the number of access users, it is determined that the load of the carrier with the largest access user is the largest, and the load of the carrier with the smallest access user is determined to be the lowest;
  • the ratio of the maximum throughput to the minimum throughput exceeds the throughput threshold, it is determined that the load of the carrier with the largest throughput is the largest, and the load of the carrier with the smallest throughput is determined to be the lowest.
  • the load of the carrier having the maximum transmit power/receive power is determined. Maximum, and determine that the carrier with the smallest transmit power/receive power has the lowest load;
  • the carrier with the largest access user has the largest load and is determined to have the smallest The carrier of the access user has the lowest load; when the maximum throughput exceeds the high threshold of the throughput, and the minimum throughput is lower than the lower threshold of the throughput, it is determined that the carrier with the largest throughput has the largest load and is determined to have the smallest The carrier load of the throughput is the lowest.
  • the current transmit power/receive power of each carrier that has reached the carrier load calculation period and/or the number of users currently accessed by the carrier, and/or the current throughput of the carrier shared channel, and/or a power interference ratio, determining a priority factor of each carrier;
  • the load of the carrier having the largest priority factor is the largest, and the load of the carrier having the smallest priority factor is determined to be the lowest.
  • Step S202 Perform load balancing on users in each carrier according to the current load of each carrier.
  • the processing of this step specifically includes the following two cases: When a new user requests to access the HSDPA carrier or the HSUPA carrier or the HSPA carrier, select the lowest loaded HSDPA carrier or the HSUPA carrier or the HSPA carrier to access the new user;
  • the HSDPA carrier or HSUPA carrier or HSPA carrier of the user currently in the hold phase reaches the carrier load calculation period, the HSDPA carrier or the HSUPA carrier or some users on the HSPA carrier with the largest load are adjusted to the HSDPA carrier or HSUPA with the lowest load. On the carrier or HSPA carrier.
  • the present invention has the following advantages:
  • the transmission and reception power, the throughput, and the number of users of the carrier are more balanced, which can avoid the degradation of the service quality on the carrier with heavy load, and improve the resource utilization rate. It also contributes to the stability of hardware devices.
  • the embodiment of the present invention proposes a dynamic channel allocation algorithm that considers carrier load balancing by combining multiple measurement quantities in carrier sequencing.
  • the algorithm is applicable to HSPA systems and can be divided into two parts:
  • the carrier with lower load is selected.
  • the SDCA algorithm performs integrated carrier transmission when sorting HSPA carriers.
  • the current load of each carrier is determined by factors such as the received power, the number of users connected, and the amount of traffic. The lower the load, the higher the priority of the carrier. Therefore, the carrier with the highest priority, that is, the lowest load, is selected. Enter the user.
  • the corresponding processing procedure can be further divided into the following two situations according to the carrier type that the user requests to access:
  • Case 1 The user requests access to the HSDPA carrier.
  • carrier selection is performed based on transmission power.
  • the downlink transmit power measurement quantity of the HS-PDSCH shared channel of the HSDPA carrier is examined.
  • the average transmit power of the carrier shared channel is high, indicating sharing. High channel utilization and less idle resources. Therefore, the carrier with a lower average transmit power indicates that the shared channel has more idle resources and is suitable for accessing new users, and the access priority is higher.
  • carrier selection is based on the number of access users.
  • the selection is based on the amount of sputum.
  • one of the following measurement quantities can be selected as the carrier selection basis:
  • the downlink can refer to the downlink policy of the HSDPA carrier, and the uplink can be combined with the uplink policy of the HSUPA carrier.
  • the uplink and downlink ordering criteria can be separately selected, and the SDCA uplink and downlink factor settings and applications are implemented to realize the comprehensive consideration of the uplink and downlink sorting priorities.
  • Part II During the service maintenance phase, if the load between carriers is not balanced, the users in the carrier with higher load are adjusted to the carrier with lower load.
  • the user in the carrier with higher load can be adjusted to the carrier with lower load.
  • the UE User Equipment
  • the principle is that the UE with the least adjustment adjusts the load of the two carriers after adjustment.
  • the present invention has the following advantages:
  • the present invention further provides a device for load balancing of a carrier, and a schematic structural diagram thereof is shown in FIG. 3, including:
  • the setting module 31 is configured to set a carrier load calculation rule.
  • the obtaining module 32 is configured to obtain the current transmit power/receive power of the carrier, and/or the number of users currently accessed by the carrier, and/or the current throughput of the carrier shared channel.
  • the determining module 33 is configured to set, according to the current transmit power/receive power of the carrier acquired by the obtaining module 32, and/or the number of users currently accessed by the carrier, and/or the current throughput of the carrier shared channel, according to the setting module 31.
  • the carrier load calculation rule determines the current load of each carrier.
  • the setting module 31 is further configured to set a trigger condition for the carrier load calculation.
  • the determining module 33 performs determining the current current of each carrier. Load operation.
  • the triggering condition of the carrier load calculation specifically includes:
  • a new user requests access to an HSDPA carrier or HSUPA carrier or HSPA carrier; or,
  • the current HSDPA carrier or HSUPA carrier or HSPA carrier has users in the hold phase, and the carrier load calculation period is reached.
  • the operations performed by the determining module 33 specifically include the following situations:
  • Case 1 When a new user requests to access the HSDPA carrier, the following is: If only one HSDPA carrier with the lowest transmission power exists in the current transmission power of each HSDPA carrier acquired by the obtaining module 32, the determining module 33 determines that the transmission power is the lowest. The HSDPA carrier has the lowest load;
  • the obtaining module 32 acquires multiple HSDPA carriers with the lowest transmission power, or the transmission power. the same
  • the number of users currently accessed by each HSDPA carrier if there is only one HSDPA carrier with the least number of users currently accessed, the determining module 33 determines that the load of the HSDPA carrier with the least number of users currently accessed is the lowest;
  • the obtaining module 32 obtains The current throughput of the shared channel of the HSDPA carrier with the least number of currently accessed users, the determining module 33 determines that the load of one HSDPA carrier conforming to the current throughput application policy of the shared channel is the lowest.
  • the determining module 33 determines that the load of one HSDPA carrier that meets the current throughput application policy of the shared channel is the lowest, specifically:
  • the determining module 33 determines that the load of the HSDPA carrier with the lowest throughput of the shared channel is the lowest;
  • the determination module 33 determines that the load of the HSDPA carrier with the highest throughput of the shared channel is the lowest.
  • the determining module 33 determines that the received power of each HSUPA carrier acquired by the obtaining module 32 has the lowest load of the HSUPA carrier with the smallest received power; or
  • the determining module 33 determines that the load of the HSUPA carrier with the least number of users currently accessed by each of the HSUPA carriers acquired by the obtaining module 32 is the lowest; or, the determining module 33 determines each HSUPA obtained by the obtaining block 32.
  • the carrier of the carrier has the lowest load on the HSUPA carrier with the lowest throughput.
  • the setting module 31 is further configured to set a load balancing trigger condition to have a user in the holding phase in the current HSDPA carrier or the HSUPA carrier or the HSPA carrier, and the carrier load calculation period is reached, and the load is reached.
  • the trigger determination module 33 determines the carrier with the largest load and the carrier with the lowest load; If the load balancing trigger condition set by the setting module 31 is an absolute value difference trigger, if the difference between the maximum transmit power/received power and the minimum transmit power/received power acquired by the acquisition module 32 exceeds the difference between the transmit power and the receive power The value threshold, the determining module 33 determines that the load of the carrier having the largest transmit power/receive power is the largest, and determines that the load of the carrier having the smallest transmit power/receive power is the lowest; if the acquisition module 32 obtains the maximum number of access users and the minimum The difference between the number of access users exceeds the difference threshold of the number of access users, and the determining module 33 determines that the load of the carrier with the largest access user is the largest, and determines that the load of the carrier with the smallest access user is the lowest; if the acquisition module 32 obtains The difference between the maximum throughput and the minimum throughput exceeds the difference threshold of the
  • the determining module 33 Determining that the load of the carrier having the largest transmit power/receive power is the largest, and determining that the load of the carrier having the smallest transmit power/receive power is the lowest; if the ratio of the maximum number of access users acquired by the acquisition module 32 to the minimum number of access users is exceeded The ratio threshold of the number of incoming users, the determining module 33 determines that the load of the carrier having the largest access user is the largest, and determines that the load of the carrier with the smallest access user is the lowest; if the acquisition module 32 obtains the maximum throughput and the minimum throughput ratio Above the ratio threshold of the throughput, the determining module 33 determines that the load of the carrier having the largest throughput is the largest, and determines that the carrier with the smallest throughput has
  • the load balancing trigger condition is a threshold trigger
  • the maximum transmit power/receive power acquired by the acquisition module 32 exceeds the high threshold of the transmit power/receive power, and the minimum transmit power/receive power is lower than the lower threshold of the transmit power/receive power
  • the determining module 33 determines that the load of the carrier having the largest transmit power/receive power is the largest, and determines that the load of the carrier having the smallest transmit power/receive power is the lowest; if the maximum number of access users acquired by the acquisition module 32 exceeds the number of access users The high threshold, and the minimum number of access users is lower than the lower threshold of the number of access users, the determining module 33 determines that the load of the carrier with the largest access user is the largest, and determines that the load of the carrier with the smallest access user is the lowest if the acquisition module 32 The obtained maximum throughput exceeds the high threshold of throughput, and the minimum throughput is lower than the low threshold of throughput, and the determining module 33 determines that the load of
  • the determining module 33 obtains the current transmit power/receive power of each carrier of the carrier load calculation period according to the current user in the hold phase, and/or the current access of the carrier.
  • the equalization module 34 is configured to perform load balancing on users in each carrier according to the current load of each carrier determined by the determining module 33, specifically:
  • the equalization module 34 selects the lowest loaded HSDPA carrier or HSUPA carrier or HSPA carrier to access the new user;
  • the equalization module 34 adjusts the HSDPA carrier with the largest load or some users on the HSUPA carrier or HSPA carrier to the HSDPA with the lowest load. Carrier or HSUPA carrier or HSPA carrier.
  • the present invention has the following advantages:
  • the transmit power, the throughput, and the user load between carriers are more balanced, which can avoid the decrease of the service shield on the heavily loaded carrier, and improve the resource utilization. At the same time, it also benefits the stability of hardware devices.
  • the present invention can be implemented by means of software plus a necessary general hardware platform, and of course, can also be through hardware, but in many cases, the former is a better implementation. the way. Based on such understanding, the technical solution of the present invention can contribute in essence or to the part that contributes to the prior art.
  • the form of a software product is stored in a storage medium, comprising instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform the embodiments of the present invention. method.
  • modules in the apparatus in the embodiments may be distributed in the apparatus of the embodiment according to the description of the embodiments, or may be correspondingly changed in one or more apparatuses different from the embodiment.
  • the modules of the above embodiments may be combined into one module, or may be further split into a plurality of sub-modules.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention se rapporte à un procédé et à un dispositif pour l'égalisation de la charge de porteuses. Le procédé selon l'invention comprend les étapes suivantes : sur la base de la puissance de transmission/réception actuelle des porteuses, et/ou du nombre actuel d'utilisateurs accédant aux porteuses, et/ou du débit actuel dans le canal partagé des porteuses, la charge actuelle de chaque porteuse est confirmée au moyen de la règle de calcul de la charge de porteuses (S201) ; la charge des utilisateurs dans chaque porteuse est égalisée en fonction de la charge actuelle de chaque porteuse (S202). La présente invention a pour objectif de résoudre le problème lié au défaut d'égalisation de la charge de chaque porteuse en raison de l'algorithme d'allocation de canal dynamique actuel dans un système d'accès par paquets à haut débit (HSPA). L'invention permet de rendre la charge de puissance de transmission/réception, de débit et de nombre d'utilisateurs mieux égalisée entre des porteuses. Elle permet en outre d'éviter une diminution de la qualité de service dans des porteuses lourdement chargées, d'améliorer le taux d'utilisation des ressources pour optimiser la stabilité du dispositif matériel.
PCT/CN2011/072055 2010-03-22 2011-03-22 Procédé et dispositif pour l'égalisation de la charge de porteuses WO2011116688A1 (fr)

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CN201010130893.3 2010-03-22
CN 201010130893 CN102111813B (zh) 2010-03-22 2010-03-22 一种载波负荷均衡的方法和设备

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CN102905317A (zh) * 2012-10-25 2013-01-30 西安电子科技大学 一种应用于多小区的移动性负载均衡方法

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CN103096323B (zh) * 2011-10-27 2016-03-02 鼎桥通信技术有限公司 一种载波的调整方法
CN103200613A (zh) * 2012-01-05 2013-07-10 中兴通讯股份有限公司 同扇区小区频间均衡决策方法、基站和无线网络控制器
CN102905316B (zh) * 2012-09-28 2015-03-11 大唐移动通信设备有限公司 一种载波负荷动态均衡方法及装置
CN103747488B (zh) * 2014-01-28 2017-02-22 大唐移动通信设备有限公司 载波均衡的方法、装置及系统
CN104837202A (zh) * 2014-02-12 2015-08-12 鼎桥通信技术有限公司 Hspa载频的调度方法及装置
CN105592553B (zh) * 2014-10-24 2019-03-15 中兴通讯股份有限公司 载波调整方法及装置
CN107317764B (zh) * 2016-04-26 2021-12-14 北京京东尚科信息技术有限公司 流量负载均衡方法、系统、装置和计算机可读存储介质
CN110740453B (zh) * 2018-07-20 2023-04-07 中兴通讯股份有限公司 一种载波共享方法、装置和系统
CN109314883B (zh) * 2018-09-04 2022-04-22 北京小米移动软件有限公司 传输负载均衡因子的方法及装置
CN111314963B (zh) * 2018-12-11 2022-07-26 中国移动通信集团吉林有限公司 一种小区负荷均衡方法及装置

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CN102905317A (zh) * 2012-10-25 2013-01-30 西安电子科技大学 一种应用于多小区的移动性负载均衡方法

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