WO2008083618A1 - Procédé de mesure d'un canal commun descendant - Google Patents

Procédé de mesure d'un canal commun descendant Download PDF

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Publication number
WO2008083618A1
WO2008083618A1 PCT/CN2008/070015 CN2008070015W WO2008083618A1 WO 2008083618 A1 WO2008083618 A1 WO 2008083618A1 CN 2008070015 W CN2008070015 W CN 2008070015W WO 2008083618 A1 WO2008083618 A1 WO 2008083618A1
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WIPO (PCT)
Prior art keywords
measurement
mobile terminal
common channel
downlink common
network side
Prior art date
Application number
PCT/CN2008/070015
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English (en)
Chinese (zh)
Inventor
Michael Roberts
Yinghua Huang
Chengyu Yu
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Huawei Technologies Co., Ltd.
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 Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Publication of WO2008083618A1 publication Critical patent/WO2008083618A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/382—Monitoring; Testing of propagation channels for resource allocation, admission control or handover

Definitions

  • the present invention relates to wireless communication technologies, and in particular, to a downlink common channel measurement method, system, device, and terminal. Background of the invention
  • network planning occupies a very important position, and good network planning can greatly improve the performance of mobile communication networks.
  • CDMA Code Division Multiple Access
  • GSM Global System for Mobile Communication
  • Network optimization is to make necessary adjustments to the unreasonable parts of the network through various technical means on the premise of fully understanding the running state of the network, so that the network can reach the optimal operating state. the process of.
  • the mobile communication network is a dynamic multi-dimensional system. After being put into use, it will change in the following four aspects: First, changes in end users, such as geographical distribution of users, signaling call models, etc.; Second, the network operating environment Changes, such as new buildings, roads, vegetation; third, changes in network structure, including changes in base station distribution, changes in system capacity, etc.; Fourth, changes in applied technology.
  • WCDMA Wideband Code Division Multiple Access
  • LTE Long Term Evolution
  • LTE physical channels are divided into dedicated channels and common channels.
  • the dedicated channel is the channel used by the user when performing the service, and can be adjusted in real time according to the feedback of the channel quality, and the parameters of the common channel (such as power, modulation mode, etc.) are generally performed according to the initial values of the initial network construction. Configured. Once the wireless environment in the network changes (such as the construction of tall buildings, other towers, etc.), the transmission of the common channel will be affected for a long time. If the parameters cannot be adjusted in time, it may affect the performance of the network.
  • the edge of the cell there may be mobile terminals that can receive pilots. Signal, but other downlink common channel transmission power is insufficient or the bit error rate/block error rate is too high, causing the problem that the user terminal cannot receive correctly.
  • the mobile terminal does not work properly at the edge of the cell. In this case, network optimization is required.
  • this method has the following disadvantages: First, the road test itself requires a lot of cost and manpower; in addition, it is not easy to select the appropriate road test point, and it is not very convenient to carry out the road test; Therefore, in the life cycle of the entire network, the number of road tests can not be more than 4, which makes the operator unable to know the operation of the network in time, and the real-time performance is poor.
  • the operator can also adjust the parameters of the network according to the content of the complaint when receiving complaints from users. Moreover, since there are already users who make complaints, the user satisfaction is degraded; in addition, the content of the user feedback is not necessarily accurate, and sometimes the correct optimization cannot be performed. Summary of the invention
  • the main technical problem to be solved by the various embodiments of the present invention is to provide a downlink common channel measurement method, system, device and terminal, which can measure the network in real time and accurately at a lower cost.
  • an embodiment of the present invention provides a downlink common channel measurement method, which includes the following steps:
  • the mobile terminal reports the saved measurement result to the network side.
  • Embodiments of the present invention also provide a downlink common channel measurement system, including a network side and a mobile terminal,
  • the network side includes: a sending module that sends a downlink common channel measurement indication; the mobile terminal includes: a measurement module that measures the downlink common channel according to the downlink common channel measurement indication; and a saving module that saves the measurement result; The saved measurement result is reported to the reporting module on the network side.
  • An embodiment of the present invention further provides a network side device, including:
  • a sending module configured to send a downlink common channel measurement indication to the mobile terminal, where the receiving module is configured to receive, by the mobile terminal, a measurement result that is reported after the measurement is performed according to the downlink common channel measurement indication that is sent by the mobile terminal.
  • An embodiment of the present invention further provides a mobile terminal, including:
  • a measurement module for measuring a downlink common channel according to a downlink common channel measurement indication sent by the network side
  • the saved measurement result is reported to the reporting module on the network side.
  • the main difference between the embodiments of the present invention and the prior art is that: when the downlink common channel needs to be measured, the network side sends an indication for measuring the downlink common channel to the mobile terminal; the mobile terminal downlinks according to the indication. The common channel is measured, and the measurement result is recorded; the measurement result is reported to the network side at an appropriate timing, and is used for planning optimization on the network side.
  • no manual operation or special instrumentation is required for road test, the cost is low, and real-time detection is possible, and it is not necessary to remedy after the occurrence of related problems, thereby improving user satisfaction.
  • 1 is a schematic diagram of downlink common channel measurement in an embodiment of the present invention
  • FIG. 2 is a flowchart of a downlink common channel measurement method according to a first embodiment of the present invention
  • FIG. 3 is a schematic diagram of a terminal location in a downlink common channel measurement method according to a first embodiment of the present invention
  • FIG. 4 is a schematic diagram of a terminal reporting measurement result in a downlink common channel measurement method according to a first embodiment of the present invention
  • FIG. 5 is a schematic diagram of a network side instructing a terminal to start measurement by using a paging message in a downlink common channel measurement method according to a first embodiment of the present invention
  • FIG. 6 is a schematic diagram of a network side instructing a terminal to start measurement by using a paging indication message in a downlink common channel measurement method according to a first embodiment of the present invention
  • FIG. 7 is a schematic diagram of a downlink common channel measurement indication sent by a network side in a downlink common channel measurement method according to a second embodiment of the present invention.
  • FIG. 8 is a schematic diagram of a terminal reporting measurement result in a downlink common channel measurement method according to a fourth embodiment of the present invention.
  • FIG. 9 is a schematic diagram of a terminal reporting measurement result in a downlink common channel measurement method according to a sixth embodiment of the present invention.
  • FIG. 10 is a schematic diagram of a terminal reporting a measurement result according to a paging message in a downlink common channel measurement method according to a seventh embodiment of the present invention.
  • FIG. 11 is a schematic diagram of a terminal reporting a measurement result according to a paging indication message in a downlink common channel measurement method according to a seventh embodiment of the present invention. Mode for carrying out the invention
  • the network side when the downlink common channel needs to be measured, the network side sends an indication for measuring the downlink common channel to the mobile terminal; the mobile terminal performs measurement on the downlink common channel according to the indication, and saves the measurement result;
  • the timing reports the measurement results to the network side for network optimization planning, as shown in Figure 1.
  • manual operation or special instrumentation is not required, and the cost is low, and real-time detection is possible, and it is not necessary to remedy after the occurrence of related problems, thereby improving user satisfaction.
  • a first embodiment of the present invention relates to a downlink common channel measurement method, as shown in FIG.
  • the network side sends an indication for measuring the downlink common channel, and the downlink common channel measurement indication is broadcasted in the cell broadcast message to all the mobile terminals in the cell.
  • the indication includes relevant parameters of the downlink common channel measurement, and the parameters may be any one of the following or any combination thereof: terminal conditions for measurement, measurement timing, channel to be measured, measurement item, measurement result storage condition, and storage content.
  • Terminal conditions for measurement It is used to indicate which mobile terminals need to perform measurement, and may specify the range of the Radio Network Temporary Identity (RNTI) of the mobile terminal that needs to be measured, or the capability required by the mobile terminal, or use calculation The way of random numbers, etc.
  • the mobile terminal that meets the condition of the terminal performs measurement of the downlink common channel according to the measurement indication of the network side.
  • RNTI Radio Network Temporary Identity
  • Channels to be measured Indicates which downlink common channels need to be measured for this measurement, including the paging indicator channel, the paging channel, the auxiliary/dynamic broadcast channel, one of the random access response channels, and any combination of these four channels.
  • Measurement item Indicates the parameters to be measured, including received signal power, signal-to-interference ratio, and block error rate.
  • the measurement items can be different for different channels. As shown in Table 1, for searching Referring to the channel, the corresponding measurement item is a block error rate; for the paging channel, the auxiliary/dynamic broadcast channel, and the random access response channel, the measurement item may be one of a received signal power, a signal to interference ratio, a block error rate, or Any combination thereof.
  • Measurement Timing The trigger condition for the mobile terminal to perform measurement. When the mobile terminal satisfies the measurement timing, it starts measuring the downlink common channel.
  • the measurement timing includes one of the following or any combination thereof:
  • the mobile terminal Before the mobile terminal performs cell reselection, that is, the mobile terminal autonomously decides to perform cell reselection according to the dominant channel channel signal quality of the camped cell or the received signal power change.
  • the mobile terminal When the mobile terminal receives the indication sent by the network side to start detecting the paging message of the downlink common channel, the mobile terminal receives the paging message.
  • the mobile terminal receives the indication sent by the network side to start detecting the paging indication message of the downlink common channel.
  • the timing of the above measurements is mostly the case where the mobile terminal is at the edge of the cell.
  • the location where the measurement takes place helps the operator to carry out subsequent network planning and optimization.
  • Measurement result storage condition If the measurement result satisfies the storage condition, the mobile terminal records the measurement data and saves it. There are corresponding storage conditions for each measurement item of each channel that needs to be measured.
  • the storage condition may be a threshold value of the measurement item. If the measurement result is lower than or higher than the specified threshold, it is considered to satisfy the storage condition, and may also be some abnormal conditions, such as cell reselection failure, handover failure, and wireless link failure. Wait.
  • Save content Indicates which information needs to be saved while saving the measurement result, such as the approximate location (such as the source cell ID and target cell ID at the time of switching), the channel for positioning measurement, the measured item, and Error time, etc.
  • the network side can locate the geographic location corresponding to the measurement result according to the information of the cell and the neighboring cell when the mobile terminal measures.
  • the mobile terminal can measure different items of different downlink common channels, which is very flexible.
  • the mobile terminal receives the downlink common channel measurement indication from the broadcast channel.
  • step 230 if the mobile terminal satisfies the terminal condition in the measurement indication, if the RNTI of the mobile terminal is within the range required by the network side, or the mobile terminal has the capability required by the network side, then the process proceeds to step 240, otherwise ends. This process.
  • step 240 when the mobile terminal satisfies the measurement timing in the measurement indication, the mobile terminal is triggered to measure the specified measurement item of the designated downlink common channel.
  • the mobile terminal By measuring the timing, the mobile terminal usually performs channel measurement when performing cell reselection, when camping on a reselected cell, when performing cell handover, or when switching to a new cell, etc., at the cell edge.
  • the network side can locate the geographical location corresponding to the measurement result according to the information of the cell and the neighboring cell measured by the mobile terminal, and does not need the mobile terminal to have a special positioning function, so that the scheme moves the channel detection. Terminal requirements are extremely low, and Will not bring a significant burden to the mobile terminal.
  • step 250 after obtaining the measurement result, determining whether the measurement result satisfies the measurement result storage condition, and if yes, proceeding to step 260, according to the indication of the saved content, correlating the measurement result and the saved content requirement with the measurement result
  • the associated information is stored locally, and the measurement result is stored locally with the measured channel, the measured item, the error time, and the measured geographical location, and then proceeds to step 270; if not, the process proceeds directly to step 270 to determine the present Whether the secondary measurement is over.
  • the mobile terminal performing the measurement ends the measurement when the measurement timing is no longer satisfied, or the measurement of the corresponding measurement item of each channel to be measured has been completed as instructed.
  • the mobile terminal when the mobile terminal decides to perform cell reselection and starts channel measurement, the mobile terminal camps on the reselected cell after the reselection is completed, or the mobile terminal has completed each channel that needs to be measured according to the instruction. When measuring the measurement of the item, end this measurement. If the measurement has ended, the process ends; if the measurement is not completed, the process proceeds to step 280, and the specified measurement item of the specified downlink common channel is continuously measured, and then proceeds to step 250 to continue to determine whether the measurement result satisfies the storage condition.
  • the mobile terminal can carry the saved content in the uplink message of the other service and report it to the network side, so as to minimize the overhead of the mobile terminal, so that the downlink common channel measurement does not increase the network transmission.
  • the mobile terminal is an active mobile terminal.
  • step 410 when the mobile terminal needs to send other service data, the mobile terminal proceeds to step 410, and the mobile terminal checks the saved measurement result and related content, and deletes the measurement result and related content that exceeds the time limit, thereby avoiding Upload redundant information and waste transmission resources on the network side. Then, proceeding to step 420, the mobile terminal determines whether there is a saved measurement result that needs to be sent. If yes, the process proceeds to step 430, otherwise the process ends. In step 430, the mobile terminal carries the saved content as an information element in an uplink message of another service and reports it to the network side. Next, proceeding to step 440, the mobile terminal deletes the reported information.
  • the network side when the network side needs to perform measurement on the mobile terminal, the network side needs to send a paging indication message to notify a group of mobile terminals to receive the paging message;
  • the terminal sends a paging message, where the paging message includes an indication to start measuring the downlink common channel, and after receiving the paging message, the mobile terminal starts to perform corresponding channel measurement, as shown in FIG. 5.
  • the network side sends a paging indication message to all mobile terminals when the mobile terminal is required to perform measurement, and the paging instruction message that is sent includes an indication to start measuring the downlink common channel, and the mobile After receiving the paging indication message, the terminal starts corresponding channel measurement, as shown in FIG. 6.
  • the second embodiment of the present invention relates to a downlink common channel measurement method, which is substantially the same as the first embodiment, and the difference is that, in the first implementation manner, the network side carries the downlink common channel measurement indication in the cell broadcast message, All the mobile terminals that are sent to the cell; in this embodiment, the network side first sends a paging indication message to notify the mobile terminal that needs to perform measurement to receive the paging message, and then sends a downlink common channel to the mobile terminals by using the paging message. Measurement instructions, as shown in Figure 7. After receiving the downlink common channel measurement indication, the mobile terminal performs the same channel measurement, measurement result storage, and measurement result reporting operation as the first embodiment, and details are not described herein again.
  • a third embodiment of the present invention relates to a downlink common channel measurement method, which is substantially the same as the first embodiment, except that in the first embodiment of the present invention, the mobile terminal performs measurement on a specified measurement item of a designated downlink common channel. After the measurement result satisfies the storage condition, the measurement result and other information associated with the measurement result are directly saved. In the embodiment, the mobile terminal performs the downlink common channel measurement statistics after completing the measurement.
  • the content of the meter may include the number of measurement attempts, the number of successful measurements, and the number of measurement failures, etc., and the statistics may be used to analyze the measurement.
  • the mobile terminal may save the measurement result and the statistical content of the measurement and the information indicated by the other network side storage contents in a unified manner.
  • the statistical content may be reported together or retained on the mobile terminal.
  • the fourth embodiment of the present invention also relates to a downlink common channel measurement method, which is substantially the same as the first to third embodiments, except that in the first to third embodiments, when the mobile terminal performs other services,
  • the saved content is carried in the uplink message of the other service and reported to the network side.
  • the terminal in the connected state reports the saved measurement result and related content to the network side through an independent measurement report. As shown in Figure 8.
  • step 810 the mobile terminal checks the saved measurement result and related content, deletes the measurement result and related content that exceeds the aging time, thereby avoiding uploading redundant information and wasting transmission resources on the network side.
  • step 820 the mobile terminal determines whether there is a saved measurement result to be sent. If yes, the process proceeds to step 830, otherwise the process ends.
  • step 830 the mobile terminal reports the saved measurement result and related information to the network side through an independent measurement.
  • step 840 the mobile terminal deletes the reported information.
  • the fifth embodiment of the present invention also relates to a downlink common channel measurement method, which is substantially the same as the fourth embodiment, except that in the fourth embodiment, the mobile terminal is a connected mobile terminal, and an independent measurement report is adopted.
  • the saved measurement result and the related content are on the network side.
  • the mobile terminal is an idle mobile terminal, and when the mobile terminal needs to go from the idle state to the connected state, for example, the mobile terminal has service data.
  • the mobile terminal attaches the saved measurement result and related information as an information element to the message sent to the network side, and reports it to the network side.
  • the message can be a mobile terminal Any message sent to the network side during the transition from the idle state to the connected state (the mobile terminal needs to send a message to the network side to establish a connection with the network side, so that its state changes from the idle state to the connected state).
  • the case where the mobile terminal transitions from the idle state to the connected state includes a caller originating, a paging response, a location area update, a network attach procedure, and the like.
  • the sixth embodiment of the present invention also relates to a downlink common channel measurement method, which is substantially the same as the fourth embodiment, except that in the fourth embodiment, the mobile terminal is a connected mobile terminal, and can directly pass independent measurement.
  • the report will save the saved measurement result and related content on the network side.
  • the mobile terminal is an idle mobile terminal, and the mobile terminal first initiates a process of establishing a signaling connection, and establishes signaling with the network side. After the connection is performed, the saved measurement result and related content are reported to the network side through an independent measurement report. As shown in FIG. 9, the process of the specific independent reporting is the same as that of the fourth embodiment.
  • the seventh embodiment of the present invention also relates to a downlink common channel measurement method, which is substantially the same as the sixth embodiment, and the difference is that, in the sixth embodiment, the mobile terminal actively reports the saved measurement result and related information;
  • the network side sends a report indication, and after receiving the report indication, the mobile terminal reports the saved measurement result and related content to the network side through an independent measurement report.
  • the network side needs to send a paging indication message, and notify a group of mobile terminals (that is, the mobile terminal that needs to report the measurement result) to receive the paging message; and then send the homing to the mobile terminal.
  • the paging message includes an indication for reporting the measurement result
  • the mobile terminal after receiving the paging message, the mobile terminal initiates a process of establishing a signaling connection, establishes a signaling connection with the network side, and then passes an independent measurement report.
  • the saved measurement result and related content are reported to the network side.
  • the process of the specific independent reporting is the same as that of the fourth embodiment.
  • the network side sends a paging indication message to all the mobile terminals when the mobile terminal is required to report the measurement result, and the method for reporting the measurement result is included in the sent paging indication message.
  • the mobile terminal After receiving the paging indication message, the mobile terminal first initiates a process of establishing a signaling connection, establishes a signaling connection with the network side, and then reports the saved measurement result and related content to the network side through an independent measurement report. As shown in FIG. 11, the process of the specific independent reporting is the same as that of the fourth embodiment.
  • the eighth embodiment of the present invention relates to a downlink common channel measurement system, including a network side and a mobile terminal, where the network side includes: a sending module, configured to send a downlink common channel measurement indication to the mobile terminal; and a receiving module, configured to receive the mobile terminal
  • the measurement result reported after the measurement is performed according to the downlink common channel measurement indication that is sent;
  • the mobile terminal includes: a measurement module that measures the downlink common channel according to the measurement indication; a save module that saves the measurement result; and reports the saved measurement result to the network
  • the reporting module on the side The system does not require manual operation or special instrumentation for road test, which is low in cost and capable of real-time detection. It does not need to be remedied after relevant problems occur to improve user satisfaction.
  • the sending module sends the downlink common channel measurement indication in the following manner: the measurement indication is carried in the broadcast message to all the mobile terminals; or the paging indication message is sent first to notify the mobile terminal that needs to perform measurement, and then the paging is performed. The message is sent to the mobile terminals for the measurement indication.
  • the downlink common channel measurement indication includes one of a terminal condition for performing measurement, a measurement timing, a channel to be measured, a measurement item, a measurement result storage condition, a saved content, or any combination thereof.
  • the mobile terminal further includes one of the following corresponding modules or any combination thereof: a module that performs measurement when the measurement occasion is satisfied; a module that performs the measurement on the downlink common channel specified by the measurement; and performs the downlink common channel according to the measurement indication
  • the mobile terminal can measure different items on different downlink common channels, which is very flexible.
  • the measurement occasion includes one of the following or any combination thereof: when the mobile terminal determines to perform cell reselection; when the mobile terminal camps on the reselected cell; when the mobile terminal receives the cell handover command on the network side; the mobile terminal switches to the new one When the mobile terminal periodically monitors the paging indicator channel; when the mobile terminal receives the paging message sent by the network side under the indication of the paging indication message, the paging message includes an indication to start measuring the downlink common channel; When the mobile terminal receives the paging indication message sent by the network side, the paging indication message includes an indication to start measuring the downlink common channel.
  • the mobile terminal By measuring the timing, the mobile terminal usually performs the channel when performing cell reselection, when camping on the reselected cell, when performing cell handover, or when switching to a new cell, etc., at the cell edge. measuring.
  • the network side may locate the geographic location corresponding to the measurement result according to the information of the cell and the neighboring cell when the mobile terminal is measured, and does not need the mobile terminal to have a special positioning function, so that the solution is for the mobile terminal performing channel detection.
  • the requirements are extremely low and do not impose a significant burden on the mobile terminal.
  • the channel to be measured includes one or any combination of the following: a paging indicator channel, a paging channel, a secondary broadcast channel, and a random access response channel.
  • the measurement items include one or any combination of the following: received signal power, signal-to-interference ratio, and block error rate.
  • the reporting module of the mobile terminal can upload the saved measurement result to the network side through an independent measurement report; or when the mobile terminal performs other services, the saved measurement result is carried in the uplink message of other services.
  • the network side The former method enables the mobile terminal to report the measurement result autonomously at any time, and the latter method reduces the overhead of the mobile terminal, and makes the downlink common channel measurement without increasing the additional burden of the network transmission resource.
  • the mobile terminal further includes a module for establishing a signaling connection with the network side, and the reporting module reports the saved measurement result to the network side after the signaling connection is established; If the mobile terminal has established a connection with the network side, the reporting module directly reports the saved measurement result to the network side through the existing connection.
  • the network side further includes: a module for sending a reporting indication by using a paging indication message; or sending the first The paging indication message notifies the mobile terminal that needs to receive the indication, and then sends a module for reporting the indication to the mobile terminal by using the paging message.
  • the reporting module can report the saved measurement result to the network side, or report the saved measurement result to the network side when receiving the indication on the network side.
  • a mobile terminal is used to perform measurement, save, and report on a downlink common channel, without manual operation or using a special instrument for road test, which has low cost and can be real-time. Detection, no need to remedy after the occurrence of related problems, improve user satisfaction.
  • the mobile terminal performs channel measurement only when it is at the edge of the cell.
  • the network side may locate the geographic location corresponding to the measurement result according to the information of the cell and the neighboring cell when the mobile terminal is measured, without requiring the mobile terminal to have a special positioning function, and the requirement for the mobile terminal performing channel detection is extremely low. , and will not bring a significant burden to the mobile terminal.
  • the mobile terminal can carry the recorded measurement result to the network side of the uplink message of the other service when performing other services, so as to reduce the overhead of the mobile terminal as much as possible, and does not increase the additional burden of the network transmission resource.

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

Abstract

Un procédé de mesure destiné à un canal commun descendant comprend les stades suivants: un terminal mobile (2) reçoit une indication de mesure pour un canal commun descendant (3) provenant du côté réseau (1); le terminal mobile (2) mesure le canal commun descendant sur la base de l'indication de mesure pour le canal commun descendant (3) et sauvegarde le résultat de mesure; le terminal mobile (2) annonce au côté réseau (1) le résultat de mesure sauvegardé. Un système, un dispositif réseau et un terminal mobile utilisent le procédé. La présente invention permet de réduire le coût de la mesure du réseau et offre de meilleures réactivité et exactitude.
PCT/CN2008/070015 2007-01-10 2008-01-03 Procédé de mesure d'un canal commun descendant WO2008083618A1 (fr)

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CN 200710007810 CN101222754A (zh) 2007-01-10 2007-01-10 下行公共信道测量方法、系统、设备和终端
CN200710007810.X 2007-01-10

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