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WO2011140711A1 - Procédé et système de gestion de ressources radio pour prise en charge de service téléphonique sur canaux à plusieurs utilisateurs adaptatifs sur un même créneau - Google Patents

Procédé et système de gestion de ressources radio pour prise en charge de service téléphonique sur canaux à plusieurs utilisateurs adaptatifs sur un même créneau Download PDF

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Publication number
WO2011140711A1
WO2011140711A1 PCT/CN2010/072684 CN2010072684W WO2011140711A1 WO 2011140711 A1 WO2011140711 A1 WO 2011140711A1 CN 2010072684 W CN2010072684 W CN 2010072684W WO 2011140711 A1 WO2011140711 A1 WO 2011140711A1
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WO
WIPO (PCT)
Prior art keywords
vamos
user
channel
traffic channel
rrm
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2010/072684
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English (en)
Chinese (zh)
Inventor
王东
况振东
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ZTE Corp
Original Assignee
ZTE Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ZTE Corp filed Critical ZTE Corp
Priority to PCT/CN2010/072684 priority Critical patent/WO2011140711A1/fr
Publication of WO2011140711A1 publication Critical patent/WO2011140711A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/541—Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference

Definitions

  • the present invention relates to a VoIP (Voice Services over Adaptive Multi-user channels on One Slot) technology, and more particularly to a Global System of Mobile Communications (GSM) system.
  • VoIP Voice Services over Adaptive Multi-user channels on One Slot
  • GSM Global System of Mobile Communications
  • RRM Radio Resource Management
  • VAMOS technology is one of them.
  • the core idea of VAMOS technology is to increase the efficiency of spectrum utilization and the network capacity of the entire system by simultaneously carrying two or more users on one GSM time slot.
  • VAMOS channel A GSM channel that simultaneously carries more than one active mobile device (MS, Mobile Station) using VAMOS technology is called a VAMOS channel.
  • the application of VAMOS technology can provide more wireless channel resources for the system, but it also increases the mutual interference between the users at the same time, and this interference must be the strongest co-channel interference, which will lead to the degradation of signal reception quality. It can be seen that when applying VAMOS technology, it is necessary to use a good interference cancellation technology at the same time to ensure that more wireless channel resources are provided while reducing interference between users at the same time. However, if you use this kind of technology, it will definitely bring about the problem of increasing the manufacturing cost of mobile devices. In order to avoid this problem, if the RRM scheme of the traditional GSM system can be improved, the VAMOS network radio resource utilization efficiency can be improved, thereby improving the network capacity of the entire system.
  • the SACCH is a dedicated signaling channel accompanying a traffic channel (TCH) that can be used to transmit test reports received by the mobile station regarding the signal strength of the service and neighboring cells. Since the transmission of the test report is crucial for the mobile station to participate in the handover function, the performance of the SACCH is directly related to the quality of the network service, and the transmission quality must be guaranteed.
  • TCH traffic channel
  • RRM scheme 1 According to the traditional GSM frame structure, for a VAMOS network, a half rate traffic channel TCH/half rate (HR) channel is taken as an example, as shown in FIG. 1, where T is a service channel and S is a SACCH channel.
  • HR half rate traffic channel
  • ul-u4 When four HR users, such as ul-u4, are multiplexed onto a VAMOS channel, ul and u2 are traditional users, and a time division multiple access (DMAA) frame is multiplexed in the conventional manner, which is in the first VAMOS subchannel; u3, u4
  • the shared TDMA frame is in the second VAMOS subchannel. Since the SACCH channel has no Discontinuous Transmission (DTX) mechanism, it can be seen that the SACCH signals of ul, u3 or u2, and u4 are co-channel interferences, and such interference is unavoidable and cannot be reduced.
  • DTX Discontinuous Transmission
  • RRM scheme 2 After introducing the shifted SACCH, as shown in FIG. 2, the SACCH frame position of u3, u4 in the second VAMOS subchannel is moved from the position shown in FIG. 1 to the position shown in FIG. The new location, so that the ul, u2 service subchannel can be used to improve the SACCH performance to reduce the interference; instead, the SACCH for ul and u2 is also true.
  • the problem of the performance degradation of the SACCH channel caused by the frame structure shown in FIG. 1 after the introduction of the VAMOS can be effectively improved.
  • the VAMOS sub-channel in which the VAMOS user of the shifted SACCH is located is referred to as the second sub-VAMOS channel, and will not be described again.
  • the DTX time of the other VAMOS subchannel user is not transmitted, so as to solve the frame knot shown in FIG.
  • the SACCH performance is improved, and the SACCH performance is improved.
  • the other VAMOS subchannel user still has strong interference to the SACCH once the traffic channel is in the transmission state and the radio channel is in poor condition, and the SACCH performance is obtained. Not a complete improvement. For example, if ul is far away from the base station or is in the shadow area of the signal, the wireless channel is in a poor condition at this time, as shown in FIG. 2, at the 6th frame, ul's T is full power and there is no DTX transmission.
  • the SACCH of u3 is still subject to strong interference, which affects the transmission of user service signaling. The degradation of SACCH performance will inevitably lead to a decrease in network capacity.
  • the main object of the present invention is to provide an RRM method and system supporting VAMOS, which can easily and effectively reduce interference while supporting VAMOS, thereby greatly improving network capacity.
  • An RRM method supporting VAMOS comprising: when a base station carrying a VAMOS service starts a shifted SACCH, implementing RRM by performing load sharing pairing of interference diversity between a first VAMOS subchannel user and a second VAMOS subchannel user.
  • the paired users are the users with the largest difference in radio link quality.
  • the paired user includes: a first VAMOS sub-channel user with the best service channel quality, and a second VAMOS sub-channel user with the lowest quality of the service channel;
  • the load sharing pairing of performing the interference diversity specifically includes:
  • the current first VAMOS subchannel users in the cell are sorted in ascending order according to the traffic channel transmission power from small to large, and the ranking result is [MSI-1, MS1 2, MS I n]; wherein, n is currently activated by the cell Number of VAMOS channels;
  • the current second VAMOS subchannel users in the current cell are sorted in descending order according to the transmission power of the traffic channel, and the ranking result is [MS2—1, MS2—2, MS2_n]; where n is the currently activated VAMOS channel of the cell. Number
  • An RRM system supporting VAMOS comprising: an RRM implementation unit, for performing load sharing of interference diversity between a first VAMOS subchannel user and a second VAMOS subchannel user when a base station carrying a VAMOS service turns on a shifted SACCH Pairing implements RRM.
  • the paired users are the users with the largest difference in radio link quality.
  • the paired user includes: a first VAMOS sub-channel user with the best service channel quality, and a second VAMOS sub-channel user with the lowest quality of the service channel;
  • the transmit power of the current traffic channel is the smallest; when the quality of the service channel is the worst, the transmit power of the current traffic channel is the largest.
  • the RRM implementation unit further includes: a power sequencing module of the first VAMOS subchannel user, a power sequencing module of the second VAMOS subchannel user, and a pairing module; wherein, the power sequencing module of the first VAMOS subchannel user is used
  • the current first VAMOS subchannel users in the cell are sorted in ascending order according to the traffic channel transmission power from small to large, and the ranking result is [MSI-1, MS1 2, MS I n]; wherein, n is currently activated by the cell VAMOS channel number;
  • a power sequencing module of the second VAMOS subchannel user configured to present the current second of the cell
  • the VAMOS subchannel users are sorted in descending order according to the transmission power of the traffic channel, and the ranking result is [MS2_1, MS2_2, MS2_n]; where n is the number of VAMOS channels currently activated by the cell;
  • the RRM is implemented by performing load sharing pairing of interference diversity between the first VAMOS subchannel user and the second VAMOS subchannel user.
  • the load sharing pairing by interference diversity can easily and effectively reduce the interference while supporting VAMOS, thereby greatly increasing the network capacity.
  • FIG. 1 is a schematic structural diagram of a conventional GSM frame structure in a VAMOS network in the prior art
  • FIG. 2 is a structural schematic diagram of a prior art VAMOS network using a shifted SACCH frame structure
  • FIG. 3 is a schematic diagram of an implementation process of an embodiment of a method according to the present invention. detailed description
  • the basic idea of the present invention is that when the base station carrying the VAMOS service turns on the shifted SACCH, the RRM is implemented by load sharing pairing of interference diversity between the first VAMOS subchannel user and the second VAMOS subchannel user.
  • the RRM scheme of the present invention is directed to the shifted SACCH feature of the GSM VAMOS technology, and a new RRM mechanism is proposed. Since the interference can be easily and effectively reduced, the interference can be completely solved, so that the SHACCH channel signal can be solved at the same time. MS traffic channel letter The problem of the SACCH performance degradation caused by the interference is greatly increased, thereby greatly increasing the network capacity.
  • An RRM method supporting VAMOS the method includes: when a base station carrying a VAMOS service starts a shifted SACCH, implementing RRM by performing load sharing pairing of interference diversity between a first VAMOS subchannel user and a second VAMOS subchannel user.
  • the paired users are the users with the largest difference in radio link quality. That is to say, under the premise that the VAMOS turns on the shifted SACCH, the first VAMOS subchannel user with the best traffic channel quality is paired with the second VAMOS subchannel user with the worst traffic channel quality; The first VAMOS subchannel user is paired with the second VAMOS subchannel user having the worst traffic channel quality; and so on, until all VAMOS channels currently activated by the current cell, the first VAMOS subchannel user and the second VAMOS sub All users between channel users are paired.
  • the first VAMOS subchannel user with the best service channel quality is: the first VAMOS subchannel user with the lowest transmission power of the current traffic channel; the second VAMOS subchannel user with the worst service channel quality is: the current traffic channel transmission The second VAMOS subchannel user with the highest power; the first VAMOS subchannel user with the best service channel quality is: the first VAMOS subchannel user with the second smallest transmit power of the current traffic channel; the worst service channel quality
  • the two VAMOS subchannel users are: the second VAMOS subchannel user whose current traffic channel has the second largest transmission power.
  • the second VAMOS subchannel user with poor interference in the original radio link condition is paired with the first VAMOS subchannel user with less interference; and the original wireless link condition is good.
  • the second VAMOS subchannel user is paired with the first VAMOS subchannel user with relatively large interference.
  • the RRM is implemented, so that the interference can be uniformly distributed throughout the network, and interference diversity is formed, which brings about an increase in network capacity.
  • the invention is illustrated by way of example below.
  • Method embodiment Monitoring a base station carrying a VAMOS service to enable a second VAMOS sub-letter
  • the RRM process of the present invention is initiated when the tracked SACCH is transferred. As shown in FIG. 3, the RRM process of this embodiment includes the following steps:
  • Step 101 Sort the current first VAMOS subchannel users in the cell according to the transmission power of the traffic channel in ascending order from small to large, and the sort result is [MSI-1, MS1 2, MSI-n].
  • ⁇ is the number of VAMOS channels currently activated by the cell.
  • Step 102 Sort the current second VAMOS subchannel users of the current cell in descending order according to the transmit power of the traffic channel, and the sort result is [MS2—1, MS2—2, MS2—n].
  • n is the number of VAMOS channels currently activated by the cell.
  • Step 104 After a delay, go to step 101.
  • the length of the delay can be determined according to the system optimization needs, and the range is 0-+ ⁇ .
  • the length of the delay can be adjusted according to the parameters of the specific system equipment test or simulation to maximize the system network capacity. The adjustment is usually done at the initial configuration of the system. However, when the network planning or capacity changes, it needs to be re-adjusted. For example, the length of the delay is determined by the test and simulation results, which is generally an integer multiple of a power control cycle of GSM.
  • a RRM system supporting VAMOS includes an RRM implementation unit, and the RRM implementation unit is configured to perform interference diversity between the first VAMOS subchannel user and the second VAMOS subchannel user when the base station carrying the VAMOS service turns on the shifted SACCH Load sharing pairing implements RRM.
  • the paired users are the users with the largest difference in radio link quality.
  • the paired user may include: a first VAMOS subchannel user with the best traffic channel quality, and a second VAMOS subchannel user with the worst traffic channel quality.
  • the quality of the traffic channel is the best, the current traffic channel transmission power is the smallest; the quality of the traffic channel At the worst, the current traffic channel has the highest transmit power.
  • the RRM implementation unit further includes: a power sequencing module of the first VAMOS subchannel user, a power sequencing module of the second VAMOS subchannel user, and a pairing module.
  • the power sequencing module of the first VAMOS subchannel user is used to sort the current first VAMOS subchannel users of the current cell in ascending order according to the transmission power of the traffic channel, and the ranking result is [MS 1-1, MS 1 - 2 , ... , MS 1 - n]; where n is the number of VAMOS channels currently activated by the cell.
  • the power ordering module of the second VAMOS subchannel user is used to sort the current second VAMOS subchannel users of the current cell in descending order according to the transmission power of the traffic channel, and the ranking result is [MS2—1, MS2—2, MS2_n]; where n is the number of VAMOS channels currently activated by the cell.
  • the power sequencing module of the first VAMOS subchannel user, the power sequencing module of the second VAMOS subchannel user, and the pairing module may be sequentially connected.

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

Abstract

L'invention porte sur un procédé de gestion de ressources radio (RRM) qui permet de prendre en charge un service téléphonique sur canaux à plusieurs utilisateurs adaptatifs sur un même créneau (VAMOS). Le procédé comprend les étapes suivantes : lorsqu'une station de base (BS) prenant en charge un service VAMOS déclenche le canal de commande associé lent (SACCH) décalé, un appariement de partage de charge pour une diversité de brouillage entre un utilisateur de premier sous-canal VAMOS et un utilisateur de second sous-canal VAMOS est effectué de façon à accomplir la RRM. L'invention porte également sur un système RRM qui permet de prendre en charge VAMOS. Une unité de réalisation RRM dans le système effectue un appariement de partage de charge pour une diversité de brouillage entre un utilisateur de premier sous-canal VAMOS et un utilisateur de second sous-canal VAMOS, de façon à accomplir la RRM. Grâce au procédé et au système de l'invention, un brouillage peut être réduit facilement et efficacement pendant que VAMOS est pris en charge, ainsi la capacité du réseau peut être considérablement améliorée.
PCT/CN2010/072684 2010-05-12 2010-05-12 Procédé et système de gestion de ressources radio pour prise en charge de service téléphonique sur canaux à plusieurs utilisateurs adaptatifs sur un même créneau Ceased WO2011140711A1 (fr)

Priority Applications (1)

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PCT/CN2010/072684 WO2011140711A1 (fr) 2010-05-12 2010-05-12 Procédé et système de gestion de ressources radio pour prise en charge de service téléphonique sur canaux à plusieurs utilisateurs adaptatifs sur un même créneau

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PCT/CN2010/072684 WO2011140711A1 (fr) 2010-05-12 2010-05-12 Procédé et système de gestion de ressources radio pour prise en charge de service téléphonique sur canaux à plusieurs utilisateurs adaptatifs sur un même créneau

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103916861A (zh) * 2013-01-04 2014-07-09 中国移动通信集团公司 语音服务功能配置方法及服务器

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010019556A1 (fr) * 2008-08-12 2010-02-18 Interdigital Patent Holdings, Inc. Procédé et appareil d'attribution de canal de commande dans un réseau geran à l'aide du concept de sous-canaux orthogonaux
WO2010020040A1 (fr) * 2008-08-18 2010-02-25 Research In Motion Limited Systèmes et procédés de sélection de séquences d'apprentissage, d'émission et de réception

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010019556A1 (fr) * 2008-08-12 2010-02-18 Interdigital Patent Holdings, Inc. Procédé et appareil d'attribution de canal de commande dans un réseau geran à l'aide du concept de sous-canaux orthogonaux
WO2010020040A1 (fr) * 2008-08-18 2010-02-25 Research In Motion Limited Systèmes et procédés de sélection de séquences d'apprentissage, d'émission et de réception

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
LG ELECTRONICS INC.: "User Pairing Scheme for VAMOS", 3GPP TSG-GERAN#42, GP-090631, 15 May 2009 (2009-05-15) *
QUALCOMM EUROPE S.A.R.L: "CR 45.914-0008 VAMOS Adaptive Pulse Shaping (Rel-8)", 3GPP TSG-GERAN MEETING #42, GP-091033, 15 May 2009 (2009-05-15) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103916861A (zh) * 2013-01-04 2014-07-09 中国移动通信集团公司 语音服务功能配置方法及服务器
CN103916861B (zh) * 2013-01-04 2017-05-03 中国移动通信集团公司 语音服务功能配置方法及服务器

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