WO2009089650A1 - Procédé et appareil pour rapporter un rapport de mesure - Google Patents

Procédé et appareil pour rapporter un rapport de mesure Download PDF

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Publication number
WO2009089650A1
WO2009089650A1 PCT/CN2008/000102 CN2008000102W WO2009089650A1 WO 2009089650 A1 WO2009089650 A1 WO 2009089650A1 CN 2008000102 W CN2008000102 W CN 2008000102W WO 2009089650 A1 WO2009089650 A1 WO 2009089650A1
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WO
WIPO (PCT)
Prior art keywords
cell
measurement
terminal
radio quality
neighboring
Prior art date
Application number
PCT/CN2008/000102
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English (en)
Chinese (zh)
Inventor
Chunguo Zhang
Zhongda Du
Original Assignee
Zte Corporation
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 Corporation filed Critical Zte Corporation
Priority to PCT/CN2008/000102 priority Critical patent/WO2009089650A1/fr
Publication of WO2009089650A1 publication Critical patent/WO2009089650A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks

Definitions

  • the present invention relates to a measurement event evaluation method in the field of wireless communication technologies, and in particular to a measurement report reporting method and apparatus, which are particularly suitable for an LTE (Long Term Evolution) system.
  • LTE Long Term Evolution
  • BACKGROUND In LTE (Long Term Evolution) in order to support handover, intra-frequency, inter-frequency, and inter-system measurements are used to determine signal coverage and radio quality of a serving cell and a target neighbor.
  • Equation 1 indicates that when the radio quality of the neighboring cell and the radio quality of the serving cell are offset, the terminal reports the measurement event.
  • the measurement report will include neighboring cells that meet the conditions of Equation 1. This event is often referred to as "into the escalation scope event.”
  • the application scenario of entering the report scope event is related to the setting of the offset value.
  • the object that normally enters the report range is a switchable object, because only when The event is triggered when the radio quality of the neighboring cell is higher than that of the serving cell; if the value is set to be larger, for example, a value greater than 0, the cell entering the reporting range includes a switchable candidate cell, which may have The radio quality is higher than the neighboring cell of the serving cell, that is, the neighboring cell suitable for handover.
  • the source cell transmits a handover request to the handover candidate cell in addition to the handover request to the target cell.
  • These handover candidate cells only retain certain communication context information, so that once the handover fails, the terminal can reselect these candidate cells and quickly resume the wireless connection.
  • These handover candidate cells can be triggered by the above "entry reporting range event". However, after the "into the reporting scope event" is triggered, the network does not necessarily trigger the handover immediately. For example, the terminal reports the neighboring cell with better radio quality. However, if the source cell considers that the target cell is overloaded, it will delay or even give up. The handover process of the target cell; or the radio quality of the neighboring cell entering the reporting range cannot meet the requirements of the handover decision, and the like.
  • the network may require the terminal to periodically report these measurements after the event is triggered in order to know in real time which neighboring cells are still reporting. Until no neighboring cells are within the reporting range. If the network immediately performs the handover process when the "Enter Reporting Range Event" is triggered, the terminal will always be switched to the appropriate target cell; but if the network does not switch immediately, then in general, the network will have two options at this time. In the first method, the network triggers the handover in the process of periodically reporting the terminal periodically. For mode one, when setting the measurement reporting period, the network must choose between the handover delay and the possible signaling of the reported report.
  • the switching delay is not limited by the length of the measurement report, but there is an abnormal situation. This is because the neighboring cell that is considered to have the best wireless quality when the event is triggered will change before the next measurement report is triggered.
  • the occurrence of an abnormality depends on the change of the neighboring cell. For example, if the neighboring cell is still in the reporting range, but is not the best neighboring cell, the terminal will switch to the cell with the best serving shield, which may cause the terminal to switch multiple times to switch to the best cell. For another example, if the neighboring cell even leaves the reporting range, the terminal may switch to a neighboring cell with poor quality of service, resulting in various communication problems.
  • the network existing in the handover process cannot know the change of the best neighboring cell, which may result in the problem that the best cell cannot be correctly switched.
  • the solution adopted in the currently used handover technology is not given.
  • SUMMARY OF THE INVENTION The present invention has been made in view of the problem that a network cannot know the change of the best neighboring cell in the handover process existing in the related art, thereby possibly causing a problem that the cell cannot be correctly switched to the optimal cell, and the present invention aims to provide a Method and device for reporting measurement reports.
  • a method for reporting a measurement report is provided, the method being applied to a terminal including a terminal, a serving cell where the terminal is located, and at least one neighboring cell adjacent to or adjacent to the serving cell.
  • the measurement report reporting method includes the following steps: in response to the measurement control message from the network side, the terminal uses the serving cell as the best cell, and the measurement control message carries the measurement control parameter and the best cell reporting trigger condition.
  • the triggering condition is: the best cell changes; the terminal measures the wireless shield of the serving cell and the at least one neighboring cell according to the measurement control parameter carried in the measurement control message; and when the trigger condition is met, the terminal 4 And the best cell measurement, and carrying the cell identifier of the current best cell and the cell identity of the other one or more neighboring cells entering the reporting range, where the current best cell is the radio quality The best neighborhood.
  • the network side pre-specifies the number of cell identifiers carried in the best cell measurement report in the measurement control message.
  • the terminal measures the radio quality of the serving cell and the at least one neighboring cell
  • the terminal compares the currently measured radio quality of the best cell with the measured wireless shield of other cells in real time, and determines whether the trigger is satisfied according to the comparison result.
  • Condition wherein, in the case where there is a cell whose radio quality is better than the radio quality of the current best cell, it is judged that the trigger condition is satisfied.
  • the terminal uses the cell with the best radio quality as the best cell.
  • the measurement report reporting method further includes the following processing: The monthly cell is regarded as the best cell; whether the trigger condition is satisfied currently; if the trigger condition is met, the terminal reports the best cell measurement report; if the trigger condition is not met, the terminal continues to the serving cell and the at least one neighbor The radio quality of the cell is measured. Further, the terminal stops the measurement of the wireless quality in response to the measurement stop message from the network side.
  • the foregoing neighboring cell that enters the reporting range is a neighboring cell whose difference between the radio quality and the radio quality of the serving cell is less than a predetermined offset.
  • the best, area measurement report further carries the measurement result of the 'J, zone corresponding to the carried cell identifier.
  • the terminal sorts the other one or more neighboring cells that enter the reporting range, and carries the corresponding cell identifier in the best cell measurement report according to the order of the ranking.
  • a measurement report reporting device is provided, the device being located on the terminal side.
  • the measurement report reporting device includes: a receiving module, configured to receive a measurement control message from a network side, where the measurement control message carries a measurement control parameter and a best cell reporting trigger condition, where the trigger condition is The best cell is changed; the setting module is configured to set the best cell; the measuring module is configured to measure the radio quality of the serving cell and the at least one neighboring cell according to the measurement control parameter carried in the measurement control message; The best cell measurement report is reported in the case that the measurement result of the measurement module meets the trigger condition, where the best cell measurement report carries the cell identifier of the current best cell and one or more other areas that enter the reporting range. The cell identity of the neighboring cells.
  • the setting module uses the serving cell where the terminal is located as the best cell, and if the measurement result of the measurement module shows that the best cell changes, the current cell with the best radio quality is used as the cell.
  • the best cell The neighboring cell that enters the reporting range is a neighboring cell whose difference between the wireless shield and the radio quality of the serving cell is less than a predetermined offset; and preferably, for the number of cell identifiers carried in the best cell measurement report, Predetermined by the network side in the measurement control message.
  • FIG. 1 is a flow chart of a method for reporting a measurement report according to an embodiment of the method of the present invention
  • FIG. 2 is a schematic diagram of an example 1 of a method for reporting a measurement report according to an embodiment of the method of the present invention
  • FIG. 4 is a schematic diagram of an example 3 of a measurement report reporting method according to an embodiment of the method of the present invention
  • FIG. 5 is a measurement report reporting according to an embodiment of the apparatus of the present invention.
  • an embodiment of the present invention provides a method and an apparatus for reporting a measurement report.
  • the preferred embodiments of the present invention are described with reference to the accompanying drawings, and the preferred embodiments of the present invention are intended to illustrate and explain the invention.
  • a measurement report reporting method is first provided, and the method is applied to a network environment including a terminal, a serving cell where the terminal is located, and at least one neighboring cell adjacent to or adjacent to the serving cell.
  • the method includes the following processing (step S102 - step S104): Step S102: In response to the measurement control message from the network side, the terminal uses the serving cell as the best cell, and the measurement control message can be carried. There are measurement control parameters and optimal cell reporting triggering conditions, where the triggering condition may be: The best cell changes; Step S104: The terminal measures the radio quality of the serving cell and the at least one neighboring cell according to the measurement control parameter carried in the measurement control message.
  • the operation of determining whether the trigger condition is met may be specifically described as follows: when the terminal measures the radio quality of the serving cell and the at least one neighboring cell (where the best cell may be the serving cell or one of the neighboring cells), the real time will be The radio quality of the currently measured best cell is compared with the measured radio quality of other cells, and it is judged according to the comparison result whether the trigger condition is satisfied; wherein, in the case where there is a cell whose radio quality is better than the radio quality of the current best cell Next, judge that the trigger condition is met.
  • Example 1 The above process can be better understood with reference to the example given in Fig. 2, wherein Fig. 2 shows the reporting timing for satisfying the trigger condition of the event.
  • the trigger time, cell individual offset, hysteresis and other parameters are not considered, and the network has not triggered the handover.
  • the terminal is always in the connected state in the serving cell.
  • the network has started the measurement and evaluation of the AX event before the time t1. .
  • the serving cell has the best radio quality; at time t1, the best radio quality cell changes from the monthly service cell to the neighbor cell 2, triggering the AX event; at time t2, the radio quality
  • the best cell is changed from the neighboring cell 2 to the neighboring cell 1 to trigger the AX event.
  • the best cell of the radio quality changes from the neighboring cell 1 to the serving cell, triggering the AX event;
  • the best radio quality cell changes from the serving cell to the neighboring cell 2, triggering an AX event.
  • Example 2 Another situation to be considered is that in the process of measuring the radio quality of the terminal cell and the at least one neighboring cell, the measurement control message of the network side is received again.
  • the terminal still needs to use the serving cell as the best cell, and judges whether the trigger condition is currently met according to the measurement result; when the trigger condition is met, the terminal reports the best cell measurement report; if the trigger condition is not met The terminal continues to measure the radio quality of the monthly traffic cell and the at least one neighbor cell.
  • Fig. 3 shows the reporting timing for satisfying the trigger condition of the AX event. Similar to FIG. 2, in FIG. 3, parameters such as trigger time, cell individual offset, hysteresis, etc. are not considered, and the network has not triggered the handover, and the terminal is always in the connected state in the serving cell. As shown in Figure 3: Before the time t1, the quality of the serving cell begins to decrease. At this time, because the network side has not sent the measurement control message, the network side does not know the wireless quality of the location of the terminal.
  • the terminal Receiving a measurement control message sent by the network, instructing the terminal to perform AX event measurement, and the terminal considers that the quality of the serving cell is the best as the initial state of the AX event evaluation before starting the event evaluation; at time t2, the terminal detects the neighboring area.
  • the quality of 1 is the best, better than the serving cell, that is, the best cell changes, triggering the AX event; after that, the quality of the neighboring area 1 begins to decline, the quality of the neighboring area 2 begins to get better, and at the time t3, the quality of the adjacent area 2 It becomes the best to trigger the AX event.
  • the terminal receives the measurement control message on the network side.
  • the measurement control message is the same as the measurement control received at time t1.
  • the terminal re-thinks that the monthly quality of the traffic is the most.
  • the terminal since the terminal already knows the radio quality of the neighboring cell when receiving the measurement control message, Therefore, the AX event is triggered immediately; at time t5, the terminal receives the measurement stop message, requests to stop the AX event evaluation, and the terminal stops measuring the neighboring area; at time t6, the terminal receives the measurement control message of the AX event on the network side.
  • Terminal re The quality of the serving cell is considered to be the best as the initial state of the AX event evaluation.
  • the terminal detects that the quality of the neighboring cell 2 is the best, which is better than the serving cell, that is, the best cell changes, triggering the AX event.
  • the cell identifier of the other one or more neighboring cells that enter the reporting range is further carried, where the neighboring area of the reporting range is entered.
  • a cell is a neighboring cell whose difference between the radio quality and the radio quality of the serving cell is less than a predetermined offset.
  • the number of cell identifiers carried in the best cell measurement report may be pre-defined by the network side in the measurement control message.
  • FIG. 4 is a schematic diagram showing a cell identifier of one or more neighboring cells carrying an entry reporting range in an optimal cell measurement report.
  • the monthly service cell is the best cell before time t, and at time t, the quality of the neighboring cell 3 becomes the best, triggering the AX event.
  • the terminal needs to carry the measurement results of multiple neighboring cells to the network and the network. If the threshold for entering the reporting range is shown by the dotted line "Threshold 1" in Figure 4. If the network requires the terminal to have up to 4 ⁇ 6 neighboring cells, in Figure 4, in addition to the neighboring zone 3, the neighboring zone 1 and the neighboring zone 4 meet the conditions, and the terminal will report three neighboring zones, respectively: Zone 3, Neighbor 1 and Neighbor 4.
  • the terminal will only report to the network side of the neighboring area 3 and the neighboring area.
  • the terminal sorts the neighboring cells that enter the reporting range, and carries the corresponding cell identifier in the best cell measurement report according to the sorting order. For example, in the example given above, the result of the sorting is: neighboring area 3, neighboring area 1, and neighboring area 4.
  • a measurement report reporting apparatus is provided, the apparatus being located on a terminal side.
  • Fig. 5 shows a block diagram of the structure of the apparatus. As shown in FIG.
  • the measurement report reporting device in the embodiment of the present invention includes a receiving module 502, a setting module 504, a measuring module 506, and a reporting module 508.
  • the receiving module 502 is configured to receive the measurement control message from the network side, where the measurement control message carries the measurement control parameter and the best cell reporting trigger condition, etc.
  • the trigger condition is: the best cell changes.
  • the setup module 504 is coupled to the receive module 502 and the measurement module 506 for setting the best cell. It may perform the setting of the best cell when the receiving module 502 receives the measurement control message, or may perform the setting of the best cell according to the measurement result of the measuring module 506.
  • the setting module 504 uses the serving cell where the terminal is located as the best cell.
  • the measurement result of the measurement module shows that the best cell changes
  • the cell with the best radio quality is used as the best cell.
  • the measurement module 506 is configured to measure the radio quality of the serving cell and the at least one neighboring cell according to the measurement control parameter carried in the measurement control message. In the case that the measurement result of the measurement module 506 indicates that the best cell has changed, the setting module 504 uses the cell with the best radio quality as the best cell.
  • the reporting module 508 is connected to the measurement module 506 and the setting module 504, and is configured to report the best cell measurement report when the measurement result of the measurement module 506 satisfies the trigger condition, where the best cell measurement report carries the current most The cell identity of the good cell and the cell identity of the other one or more neighboring cells entering the reporting range.
  • the neighboring cell that enters the reporting range is the number of cell identifiers carried in the best cell measurement report reported by the reporting module 508, where the difference between the radio quality and the radio quality of the serving cell is less than a predetermined offset. , can be pre-defined in the measurement control message by the network side.
  • the network side can accurately know that the current best radio quality cell (best cell) is by causing the terminal to report the network side in time when the best cell changes. Which can improve the accuracy of maintenance of measurement data on the network side and effectively support intra-frequency inter-frequency handover.

Abstract

L'invention porte sur un procédé et un appareil pour rapporter un rapport de mesure, le procédé comprenant les étapes suivantes : un terminal considère la cellule de desserte en tant que meilleure cellule en réponse à un message de commande de mesure provenant du côté réseau, le message de commande de mesure contenant le paramètre de commande de mesure et une condition de déclenchement pour rapporter la meilleure cellule, la condition de déclenchement étant que : la meilleure cellule est changée ; le terminal mesure la qualité radio de la cellule de desserte et d'au moins une cellule adjacente selon le paramètre de commande de mesure contenu dans le message de commande de mesure ; lorsque la condition de déclenchement est satisfaite, le terminal rapporte le rapport de mesure de la meilleure cellule, et le rapport de mesure contient l'identification de cellule de la meilleure cellule et l'identification de cellule d'une ou plusieurs autres cellules adjacentes entrant dans l'intervalle de rapport. L'appareil comprend un module de réception, un module de réglage, un module de mesure et un module de rapport. Grâce à la présente invention, le côté réseau peut connaître précisément la cellule courante qui a la meilleure qualité radio, et peut donc améliorer la précision de maintenance de données de mesure du côté réseau, et supporter efficacement la commutation intra-fréquence ou interfréquence.
PCT/CN2008/000102 2008-01-15 2008-01-15 Procédé et appareil pour rapporter un rapport de mesure WO2009089650A1 (fr)

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PCT/CN2008/000102 WO2009089650A1 (fr) 2008-01-15 2008-01-15 Procédé et appareil pour rapporter un rapport de mesure

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Application Number Priority Date Filing Date Title
PCT/CN2008/000102 WO2009089650A1 (fr) 2008-01-15 2008-01-15 Procédé et appareil pour rapporter un rapport de mesure

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1255815A (zh) * 1999-05-21 2000-06-07 深圳市中兴通讯股份有限公司 一种基于小区动态优先级的切换控制方法
CN1371579A (zh) * 1999-05-19 2002-09-25 艾利森电话股份有限公司 基于事件地报告移动台测量结果
CN1426184A (zh) * 2001-12-11 2003-06-25 深圳市中兴通讯股份有限公司上海第二研究所 周期上报频间硬切换判决方法
CN101052192A (zh) * 2006-04-04 2007-10-10 大唐移动通信设备有限公司 移动通信系统中的测量上报方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1371579A (zh) * 1999-05-19 2002-09-25 艾利森电话股份有限公司 基于事件地报告移动台测量结果
CN1255815A (zh) * 1999-05-21 2000-06-07 深圳市中兴通讯股份有限公司 一种基于小区动态优先级的切换控制方法
CN1426184A (zh) * 2001-12-11 2003-06-25 深圳市中兴通讯股份有限公司上海第二研究所 周期上报频间硬切换判决方法
CN101052192A (zh) * 2006-04-04 2007-10-10 大唐移动通信设备有限公司 移动通信系统中的测量上报方法

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