WO2007124696A1

WO2007124696A1 - A method and device of measuring channel in the tle system

Info

Publication number: WO2007124696A1
Application number: PCT/CN2007/001465
Authority: WO
Inventors: Ju Li; Liyan Yin; Xudong Yang; Yang Li
Original assignee: Huawei Technologies Co., Ltd.
Priority date: 2006-04-29
Filing date: 2007-04-29
Publication date: 2007-11-08
Also published as: CN101064898B; CN101064898A

Abstract

A method of measuring channel in the TLE system includes: the network side sends an instruction to the UE, and the UE measures the channel according to the instruction. Another method of measuring channel is given at the same time, in which the UE selects measuring manner according to the channel needed to be measured in a cell. When the measuring result meets the pre-scheduled condition, the UE measures the channel of the neighbored cells. A device of measuring channel in LTE system is also given.

Description

Method and device for measuring channel in long term evolution system

Technical field

The present invention relates to the field of mobile communications technologies, and in particular, to a method and apparatus for measuring a channel in a Long Term Evolution (LTE) system. Background of the invention

In order to promote the sustainable development of third-generation (3G) communication technologies, the Three Generation Partnership Project (3GPP) proposed and deployed the 3G Long Term Evolution (LTE) project. The main considerations include reducing latency, Improve user data rates, increase system capacity and coverage, and reasonably flexible 3G spectrum allocation. The objectives of LTE mainly include the following:

(1) Support 1.25MHz ~ 20MHz bandwidth, greatly improve the peak data rate, for example, support the downlink 100Mbps, uplink 50Mbps peak rate in the 20MHz bandwidth;

(2) improving the cell edge bit rate while maintaining the location of the existing base station, and effectively improving the spectrum efficiency;

(3) Reduce the access network delay to less than 10ms; reduce the control plane delay to less than 100ms; Optimize the performance of low-speed users below 15km/h, and provide high-performance services for mobile users of 15-120km/h , can support users of 120-350km / h;

(4) The throughput, spectrum efficiency and mobility indicators will be fully guaranteed in the 5km radius of the cell. When the cell radius is increased to 30km, only the above indicators will be slightly weakened;

(5) Support multiple carrier bandwidths to meet the flexibility of narrowband spectrum allocation when configuring the system.

In practical applications, the user equipment (UE) needs to measure and judge the channel of the cell in order to perform cell selection/reselection and handover to obtain a better signal or better quality of service. Channel quality. When the result of the UE measurement meets certain criteria, a corresponding event may be triggered, for example, a criterion for handover is met, and handover may occur.

In the existing 3G communication system, for example, a Wideband Code Division Multiple Access (WCDMA) system measures Ec/Io or received signal code power (Received by Common Pilot Channel, CPICH). Signal Code Power, RSCP), estimates the channel quality based on the measurement results. Among them, Ec reflects the strength of the received useful signal, and Io reflects the interference of the channel. Since the physical layer technology has changed in LTE compared to WCDMA, the method of measuring channels in WCDMA is not applicable to LTE.

In addition, another solution is to estimate the channel quality by measuring the Es/Io of the common pilot of LTE. The above schemes are all proposed for the physical quantities that need to be measured in LTE. Since the bandwidth of the cell in LTE can be as follows: 1.25/2.5/5/10/20MHZ, then for the cells of different bandwidths, all of them are measured or only measured, that is, when measuring, how should it be measured, No relevant method. The present invention is directed to a possible solution to this problem. Summary of the invention

In view of this, the embodiment of the present invention provides a method for measuring a channel in an LTE system, which can be used to measure a cell channel in an LTE environment. The method comprises the following steps:

The network side sends a measurement indication to the user equipment UE;

After receiving the measurement indication, the UE takes a corresponding measurement strategy to measure the channel to be measured.

The embodiment of the present invention further provides a method for measuring a channel in a second LTE system, where the UE measures a common channel in a cell where the UE is located, and the specific measurement mode is any combination of the following situations:

The UE tests the primary common channel, the secondary common channel or each common channel of the cell the amount;

The UE selects a common channel to be measured from the common channels of the cell, and performs measurement on the selected common channel;

At least one inherent common channel to be tested is preset in the UE, and the UE performs measurement on the inherent common channel to be tested;

Alternatively, the UE measures the common pilot channel of the cell where the UE is located, and the specific measurement mode is any combination of the following situations:

The UE measures a common pilot channel in a total bandwidth range of the cell;

The UE measures the common pilot channel of the cell within a current receiving bandwidth of the UE;

The UE selects a bandwidth range to be measured and measures the cell common pilot channel within the selected bandwidth range;

The UE measures the cell common pilot channel within a predetermined bandwidth range.

The embodiment of the present invention further discloses a method for measuring a channel in a third LTE system, where the UE receives a measurement indication from the network side, and performs measurement on a channel of a cell that needs to be measured.

An embodiment of the present invention provides an apparatus for measuring a channel in an LTE system, where the apparatus includes: an indication receiving and parsing module, configured to receive a measurement indication from a network side, and parse the received measurement indication to obtain a measurement parameter; The obtained measurement parameters are sent to the measurement module;

A measurement module for performing channel measurement based on measurement parameters.

The embodiment of the present invention further provides a device for measuring a channel in a second LTE system, where the device includes:

a measurement parameter module for saving measurement parameters required for measuring a channel;

A measurement module is configured to perform channel measurement according to measurement parameters of the measurement parameter module.

It can be seen from the above technical solutions that the present invention designs corresponding measurements for the case where the cell bandwidth is variable in the LTE system and the case where the cell may have multiple common channels. Channel scheme. Therefore, the scheme of measuring channels of the present invention can be used to measure cell channels in an LTE environment. BRIEF DESCRIPTION OF THE DRAWINGS

1 is a flow chart of Embodiment 1 of the present invention;

2 is a structural diagram of a device according to Embodiment 1 of the present invention;

3 is a flowchart of Embodiment 2 of the present invention;

4 is a structural diagram of a device according to Embodiment 2 of the present invention;

Figure 5 is a flowchart of Embodiment 3 of the present invention;

Figure 6 is a structural diagram of a device according to a third embodiment of the present invention. Mode for carrying out the invention

The embodiment of the present invention fully considers the bandwidth of the cell and the case where the common channel in the cell is single or multiple, and proposes a method for measuring the cell channel suitable for the LTE environment.

First, the measurement is to measure the identified cell channel, and for the unidentified cell channel, it is not necessary or impossible to perform measurement; therefore, in the process of identifying the cell, some of the channels are not measured. For example, if the synchronization channel (SCH) is used to identify the ID group of the cell, the SCH cannot be measured before the cell ID group is identified and the cell is not identified, that is, it cannot be regarded as a measurement channel. The present invention does not provide an in-depth analysis of this problem, but only focuses on possible measurement channel conditions in LTE.

The method of the present invention will be described in detail in the following three examples according to the specific implementation flow.

Embodiment 1: The network side sends an indication of the measurement channel, and the UE performs measurement according to the received indication.

The process of this embodiment is as shown in FIG. 1 and includes the following steps: Step 101: The network side sends a measurement indication to the UE.

The measurement indication may be 'as a system message or a measurement control message. The system message may be a message sent by the network side when the UE is in an idle state or a connected state; the measurement control message is a measurement control message sent by the network side when the UE is in the connected state. The system message or measurement control message may include any combination of the following:

Measurement type: including on-frequency measurement or inter-frequency measurement;

Neighbor cell information: including cell identifier, frequency band information of the cell, center frequency of the cell, or any combination of the above information; the frequency band information may be represented by a starting frequency and a bandwidth;

The channel to be measured: may be a channel ID for identifying a channel to be measured; the channel to be measured may be a common channel or a common pilot channel; the common channel may include a SCH and/or a Broadcasting Channel. BCH).

The physical quantity to be measured: Es/Io, ^"Signal Interference Noise Ratio (SINR), Channel Quality Indicator (CQI), received power, or any combination of the above; where Es reflects the received The strength of the useful signal, Io reflects the interference of the channel; the measurement of the channel is to measure the physical quantity of the channel that needs to be measured;

Bandwidth information to be measured: When the channel to be measured is a common pilot channel, the item may be selected to specify a bandwidth range in which the common pilot channel needs to be measured; of course, the item may not be selected, and the UE may also use other methods. Determine the range of bandwidth that needs to be measured for the common pilot channel, as detailed below.

Step 102: After receiving the measurement indication, the UE performs measurement on the channel that needs to be measured.

The key to this step is to measure which channel is used for the channel to be measured. If the channel is a common pilot channel, it also includes measuring which frequency band of the common pilot channel. The channel that needs to be measured may be a channel specified in a measurement indication sent by the network side, or a channel selected by the UE, or a channel specified in the UE. The following is a detailed description of the process that may be included in this step:

Step 102a: Determine the neighbor cell to be measured. You can use any of the following methods or a combination of them:

102a, the indication message of the measurement channel sent by the network side includes neighbor cell information, where the neighbor cell information is information of the measured neighbor cell, and the UE measures the cell corresponding to the neighbor cell information; if the indication message Including more than one neighbor cell information, the IJE can select one neighbor cell for measurement;

102a2: The UE itself saves the neighbor cell list, and the UE selects one neighbor cell from the neighbor cell list saved by itself to perform measurement.

102b: Determine the physical quantity that needs to be measured. The physical quantity that needs to be measured may be only one or a group; the indication information sent by the network side may not have information about the physical quantity that needs to be measured, and the UE measures the preset physical quantity that needs to be measured by default. For example, if Es/Io is preset to be a physical quantity that needs to be measured by default, the UE measures Es/Io of the measured channel (which may also include a bandwidth range that needs to be measured) of the determined cell to be measured; Presetting Es/Io and SINR as the physical quantities that need to be measured by default, the UE measures the Es/Io and SINR of the measured channel (which may also include the bandwidth range that needs to be measured) of the determined cell to be measured. .

Of course, the indication information sent by the network side may also include information of the physical quantity that needs to be measured, and the UE measures the physical quantity that needs to be measured included in the indication information.

Step 102c: The channel is measured, that is, the measured physical quantity of the determined cell is measured. Including the following situations:

102cK if the channel to be measured is a common channel, and the currently measured cell has only one common channel, the UE performs measurement on the common channel;

102c2 If the channel to be measured is a common channel, and the currently measured cell has more than one common channel, then any combination of the following: The UE measures the primary common channel, the secondary common channel, or each common channel of the cell;

The UE measures the common channel specified by the network side; if the method is adopted, the indication message of the measurement channel needs to include the identifier of the channel to be measured;

The at least one inherent common channel to be tested is preset in the UE, and the UE performs measurement on the inherent common channel to be tested; the identifier of the inherent common channel to be tested may be preset in the UE, that is, the UE knows in advance that the UE is to be measured. Which channel;

102c3. If the channel to be measured in the currently measured cell is a common pilot channel, further including determining a bandwidth to be measured, and the specific manner may be any combination of the following situations:

The UE measures a common pilot channel in a total bandwidth range of the cell;

The UE measures the common pilot channel of the cell within a current receiving bandwidth of the UE; the UE measures the common pilot channel of the cell within a bandwidth range specified by the network side; the UE selects a bandwidth range to be measured, and measures the selected bandwidth. a common pilot channel of the cell within the range;

The UE measures the cell common pilot channel in a preset bandwidth range, and the preset bandwidth range may be set in the UE, which is equivalent to the UE knowing in advance the bandwidth to be measured;

The UE performs measurement according to the measurement type indicated by the network side, that is, if the measurement type is the same frequency measurement, the UE measures the common pilot channel in the same frequency bandwidth range of the cell; if the measurement type is the inter-frequency measurement, the UE measures the A common pilot channel within the inter-frequency bandwidth of the cell.

The completion of step 102 indicates that the UE has completed measuring the channel of one cell. Generally, the UE does not measure only one cell at a time. Therefore, after the UE measures a cell, any of the following operations can be performed: The UE continues to perform measurement on the channel of the cell, that is, repeatedly performing step 102, and repeatedly measuring the same cell;

The UE selects a cell from the measured cells, and performs measurement on the channel of the selected cell; that is, repeatedly performs step 102, and repeatedly measures the cells;

The UE determines whether there is still a cell to be measured, and if so, the UE selects a cell from the cells to be measured, and performs measurement on the channel of the selected cell; otherwise, the process or the cell is ended, and the channel of the selected cell is performed. measuring.

The process of this embodiment may further include the following steps:

Step 103: The UE repeatedly performs step 102 according to a certain measurement period, and determines whether the measured result satisfies the condition of the previously reported network side, and if yes, reports the measurement result to the network.

To implement the foregoing process, the UE in this embodiment needs to include the apparatus shown in FIG. 2, including:

The receiving and parsing module 210 is configured to receive the measurement indication from the network side, and parse the received measurement indication to obtain a measurement parameter; send the obtained measurement parameter to the measurement module 220; the measurement parameter includes a measurement type, a neighbor Cell information, the identity of the channel to be measured, the physical quantity that needs to be measured, the bandwidth information that needs to be measured, or any combination of the above.

The measurement module 220 is configured to perform channel measurement according to the measurement parameter; the measurement parameter may all come from the indication receiving and parsing module 210, or partially from the indication receiving and parsing module 210, and partially from the measurement parameters saved by itself. The measurement module 220 further includes:

a parameter saving unit 221, configured to save an intrinsic measurement parameter;

The channel selection unit 222 is configured to select a channel that needs to be measured. The unit is an optional unit. If the measurement indication sent by the network side does not specify a channel to be measured, the unit is enabled, if the measurement indication has been specified. The measured channel, the unit is not enabled; The frequency band selection unit 223 is configured to select a frequency band to be measured when the channel selected by the channel selection unit is a common pilot channel; the same channel selection unit 222 is an optional unit, and the measurement is sent by the network side. This unit is enabled when no measurement band is specified.

The device further includes a result reporting module 230, configured to determine whether the measurement result of the measurement module 220 satisfies the reporting condition, and report the measurement result to the network side according to the determination result.

Embodiment 2: The UE performs channel measurement autonomously.

The main content of this embodiment includes the following two steps:

Step 301: The UE performs measurement on a channel that the UE needs to measure, and may measure the specific frequency band of the common channel or the common pilot channel of the current cell, including the following:

If the channel to be measured is a common channel, and the current cell has only one common channel, the UE performs measurement on the common channel;

If the channel to be measured is a common channel, and the current cell has more than one common channel, it is any combination of the following:

The UE measures the primary common channel, the secondary common channel, or each common channel of the current cell;

If the channel to be measured is a common pilot channel, it further includes determining the bandwidth to be measured, in any combination of the following:

The UE measures a common pilot channel in a total bandwidth range of the cell; The UE measures the common pilot channel of the cell within a current receiving bandwidth of the UE;

The UE measures the cell common pilot channel in a preset bandwidth range, and the preset bandwidth range may be set in the UE, which is equivalent to the UE knowing the bandwidth to be measured in advance; the physical quantity to be measured is Es/Io, SIN CQI Receive power or any combination of the above.

Step 302: If the measured value satisfies a preset condition, the UE measures the channel of the neighboring cell.

The pre-set condition may be a threshold for setting a physical quantity to be measured in advance, and when the UE measurement value is greater than or equal to or less than or equal to the threshold value, it is considered that the pre-set condition is reached. For example, the threshold of Es/Io is set to A in advance. If the Es/Io measured by the UE is less than or equal to A, it is considered that the preset condition is reached, and the neighboring cell needs to be measured; the preset condition may also take other forms, for example, It is assumed that the sum of two physical quantities that need to be measured is greater than a certain threshold, that is, the condition is considered to be satisfied, and the like.

The key to measuring the neighboring cell is to determine which channel needs to be measured, which channel of which neighboring cell is measured; if the channel is a common pilot channel, it also includes determining the frequency band in which the measured common pilot channel is measured. The following is a detailed description of the process of determining the channel to be measured:

Step 302a: Determine the neighbor cell to be measured. The UE can save the neighbor cell list by itself, and the UE selects one neighbor cell from the neighbor cell list saved by itself to perform measurement.

Step 302b: Determine the channel to be measured, including the following situations:

302bl. If the channel to be measured is a common channel, and the currently measured cell has only one common channel, the UE measures the physical quantity of the common channel that needs to be measured; 302b2: If the channel to be measured is a common channel, and the currently measured cell has more than one common channel, then any combination of the following:

The UE measures the primary common channel, the secondary common channel or each common channel of the cell;

The UE is configured to measure the physical quantity of the common common channel to be measured, and the identifier of the inherent common channel to be tested may be preset in the UE, that is, The UE knows in advance which channel to measure; 302b3, if the channel to be measured in the currently measured cell is a common pilot channel, further includes determining the bandwidth to be measured, as any combination of the following:

The UE measures a common pilot channel in a total bandwidth range of the cell;

The UE measures the common pilot channel of the cell within a current receiving bandwidth of the UE; the UE selects a bandwidth range to be measured, and measures the small common pilot channel within the selected bandwidth range;

The UE measures the cell common pilot channel in a preset bandwidth range, and the preset bandwidth range may be set in the UE, which is equivalent to the UE knowing the bandwidth to be measured in advance; the physical quantity that needs to be measured is usually It is the default physical quantity that needs to be measured, so as with the measurement of the cell, the UE measures the default physical quantity that needs to be measured.

The completion of step 302 indicates that the UE has completed measuring the channel of one cell. Generally, the UE does not measure only one cell at a time. Therefore, after the UE measures a cell, any of the following operations can be performed:

The UE continues to perform measurement on the channel of the cell, that is, repeatedly performing step 202, and repeatedly measuring the same cell;

The UE selects one cell from the measured cells and performs channel on the selected cell. Measuring; that is, repeating step 302, repeatedly measuring several cells;

The process of this embodiment may further include the following steps:

Step 303: The UE repeatedly performs step 302 according to a certain measurement period, and determines whether the measured result satisfies the condition of the previously reported network side, and if yes, reports the measurement result to the network side.

The device for implementing the solution in this embodiment in the UE is as shown in FIG. 4, and includes:

a measurement parameter module 410, configured to save measurement parameters required for measuring a channel; wherein,

a channel selection unit 411, configured to select a channel that needs to be measured;

The frequency band selecting unit 412 is configured to select a frequency band to be measured when the channel selected by the channel selecting unit 411 is a common pilot channel.

The measurement module 420 is configured to perform channel measurement according to the measurement parameter of the measurement parameter module 410.

The condition judging module 430 is configured to determine whether the measurement result of the measurement module 420 satisfies the preset condition, and notify the measurement module 420 to measure the neighbor cell channel according to the judgment result.

The result reporting module 440 is configured to determine whether the measurement result of the measurement module 420 satisfies the reporting condition, and report the measurement result to the network side according to the determination result.

Embodiment 3: The combination of the foregoing two embodiments, that is, the UE first performs measurement on the channel of the local cell; when a certain condition is met, the UE requests a measurement indication from the network side; the network side sends a measurement indication, and the UE receives the measurement indication according to the measurement indication. The channel is measured.

The flow of this embodiment is shown in FIG. 5, and includes the following steps:

Step 501: The UE measures the channel that needs to be measured by the cell in the cell; The common channel of the former cell or the specific frequency band of the common pilot channel is measured, including the following situations:

The UE measures the primary common channel, the secondary common channel or each common channel of the current cell;

The UE measures a common pilot channel in a total bandwidth range of the cell;

The UE measures the cell common pilot channel in a preset bandwidth range, and the preset bandwidth range may be set in the UE, which is equivalent to the UE knowing the bandwidth to be measured in advance; the physical quantity to be measured is Es/Io, SINR, CQI, received power, or any combination of the above. The pre-set condition may be a threshold for setting a physical quantity that needs to be measured in advance, and when the UE measurement value is greater than or equal to or less than or equal to the threshold value, it is considered that the pre-set condition is reached. For example, the threshold of Es/Io is set to A in advance, and the Es/Io measured by ΌΈ If it is less than or equal to A, it is considered that the preset condition is reached, and the neighboring cell needs to be measured.

Step 502: If the measured value satisfies the preset condition, the UE sends a request message for measuring the neighboring cell indication to the network side.

The pre-set condition may be a threshold for setting a physical quantity to be measured in advance, and when the UE measurement value is greater than or equal to or less than or equal to the threshold value, it is considered that the pre-set condition is reached. For example, the threshold of the Es/Io is set to A in advance. If the Es/Io measured by the UE is less than or equal to A, it is considered that the preset condition is reached, and the request message for measuring the indication of the neighboring cell is sent to the network side.

Step 503: The network side receives the request message, and generates and sends an indication message for measuring the neighbor cell channel to the UE.

The indication message may be a system message or a proprietary measurement control message, and the message may include any combination of the following:

Measurement type: including co-frequency neighbor cell measurement or inter-frequency neighbor and zone measurement;

Neighbor cell information: cell identifier, cell frequency band information, cell center frequency or any combination of the above information; band information can be represented by starting frequency and bandwidth;

The identifier of the channel to be measured: may be a channel ID, which is used to identify a channel that needs to be measured; the channel to be measured may be a common channel or a common pilot channel;

The physical quantity that needs to be measured: Es/Io, SINR, CQI, received power, or any combination of the above;

Bandwidth information to be measured: When the channel being measured is a common pilot channel, this can be selected to specify the bandwidth range in which the common homing channel needs to be measured.

Step 504: The UE receives the indication message, and measures a channel according to the content of the indication message.

The key to this step is: What measurement method is used for the channel to be measured, and if the channel is a common pilot channel, it also includes measuring which frequency band of the common pilot channel. The channel that needs to be measured may be the channel specified in the measurement indication sent by the network side, or It is the channel selected by the UE, or the channel specified in the UE. This step may include the following process:

Step 504a: Determine the neighbor cell to be measured. Any one of the following methods or a combination thereof may be employed:

504al, the indication message of the measurement channel sent by the network side includes the neighboring cell information, where the neighbor cell information is the information of the measured neighboring cell, and the UE measures the cell corresponding to the neighbor cell information; if the indication message If more than one neighbor cell information is included, the UE may select one neighbor cell to perform measurement;

504a2: The UE itself saves the neighbor cell list, and the UE selects one neighbor cell from the neighbor cell list saved by itself to perform measurement.

504b: Determine the physical quantity that needs to be measured. The physical quantity that needs to be measured may be only one, or a set of physical quantities that need to be measured; the indication information sent by the network side may have no information about the physical quantity that needs to be measured, and the UE needs to be measured for the default preset. The physical quantity is measured. For example, if Es/Io is preset to be a physical quantity that needs to be measured by default, the UE measures Es/Io of the measured channel of the determined cell that needs to be measured (which may also include a bandwidth range that needs to be measured); Presetting Es/Io and SINR as the physical quantities that need to be measured by default, the UE measures the Es/Io and SINR of the measured channel (which may also include the bandwidth range that needs to be measured) of the determined cell to be measured. .

Certainly, the indication information sent by the network side may also include a physical quantity that needs to be measured, and the UE measures the physical quantity that needs to be measured included in the indication information.

Step 504c: The channel is measured, that is, the measured physical quantity of the determined cell needs to be measured. Including the following situations:

504c if the channel to be measured is a common channel, and the currently measured cell has only one common channel, the UE performs measurement on the common channel; 504c2, if the channel to be measured is a common channel, and the currently measured cell has more than one common channel, then any combination of the following:

The UE measures the common channel specified by the network side; if the method is used, the indication of the channel to be measured includes the identifier of the channel to be measured;

The UE is configured to measure the physical quantity of the common common channel to be measured, and the identifier of the inherent common channel to be tested may be preset in the UE, that is, The UE knows in advance which channel to measure; 504c3, if the channel to be measured in the currently measured cell is a common pilot channel, further includes determining a bandwidth to be measured, as any combination of the following:

The UE measures a common pilot channel in a total bandwidth range of the cell;

The completion of step 504 indicates that the UE has completed the measurement of the channel of one cell. Usually, the UE does not measure only one cell at a time, so after the UE measures a cell, To perform any of the following operations:

The UE continues to measure the channel of the cell, that is, repeatedly performing step 504, and repeatedly measuring the same cell;

The UE selects a cell from the measured cells, and performs measurement on the channel of the selected cell; that is, repeatedly performs step 504, and repeatedly measures the cells;

The process of this embodiment may further include the following steps:

Step 505: The UE repeats the step 504 according to a certain measurement period, and determines whether the measured result meets the condition of the network side that is set in advance, and if yes, reports the measurement result to the network side.

The apparatus for implementing the solution in this embodiment in the UE is as shown in FIG. 6. Compared with the apparatus shown in FIG. 4, on the basis of retaining the modules shown in FIG. 4, an indication receiving and parsing module 450 is added for The notification of the determining module 430 sends a request message of the measurement indication to the network side; receives the measurement indication from the network side, and parses the received measurement indication to obtain a measurement parameter; and sends the obtained measurement parameter to the measurement module 420.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. Within the scope.

Claims

Claim

A method for measuring a channel in a long term evolution LTE system, characterized in that the method comprises the following steps:

The network side sends a measurement indication to the user equipment UE;

2. Method according to claim 1, characterized in that the measurement indication is a system message or a measurement control message.

The method according to claim 2, wherein the measurement indication comprises: a measurement type, neighbor cell information, a channel to be measured, a physical quantity to be measured, bandwidth information to be measured, or the above information. random combination.

The method according to claim 3, wherein the measurement type is an intra-frequency measurement or an inter-frequency measurement.

The method according to claim 3, wherein the neighbor cell information comprises: a cell identifier, a frequency band information of a cell, a center frequency of a cell, or any combination of the above information.

The method according to claim 3, wherein the channel to be measured comprises a common channel or/and a common pilot channel.

The method according to claim 3, wherein the physical quantity to be measured comprises: Es/Io, SIN. Channel quality indication CQI, received power or any combination of the above.

The method according to claim 1, wherein the measuring, by the UE, the channel that needs to be measured comprises:

The UE measures the channel to be measured according to a certain measurement period, and determines whether the result of the measurement meets the condition of the network side that is set in advance, and if so, reports the measurement result to the network side.

The method according to any one of claims 1 to 8, wherein, if the channel to be measured in the currently measured cell is a common channel of the cell, the UE adopts a corresponding measurement strategy as follows: random combination:

The UE measures the common channel specified by the network side;

At least one inherent common channel to be tested is preset in the UE, and the UE performs measurement on the inherent common channel to be tested.

The method according to any one of claims 1 to 8, wherein, if the channel to be measured in the currently measured cell is a common pilot channel of the cell, the UE adopts a corresponding measurement strategy as follows: Any combination of situations:

The UE measures a common pilot channel in a total bandwidth range of the cell;

The UE measures the common pilot channel of the cell within a preset bandwidth range;

A method for measuring a channel in an LTE system, wherein the UE measures a common channel in a cell where the UE is located, and the specific measurement mode is any combination of the following:

The UE measures a common pilot channel in a total bandwidth range of the cell;

The method according to claim 11, wherein the method further comprises: if the UE performs measurement on the channel of the cell in which the cell is located, the UE determines the channel of the neighboring cell.

The method according to claim 12, wherein if the channel of the neighboring cell is a common channel, the UE measures the channel of the neighboring cell as any combination of the following:

The UE measures the primary common channel, the secondary common channel, or each common channel of the neighboring cell;

The UE selects a common channel to be measured from the common channels of the neighboring cells, and performs measurement on the selected common channel;

At least one inherent common channel to be tested is preset in the UE, and the UE measures the inherent common channel to be tested of the neighboring cell.

14. The method according to claim 12, wherein if the neighboring cell has a letter The channel is a common pilot channel, and the UE measures the channel of the neighboring cell as any combination of the following conditions:

ΌΈ measuring a common pilot channel in the entire bandwidth range of the neighboring cell;

The UE measures the neighboring cell common pilot channel within the current receiving bandwidth of the UE; the UE selects a bandwidth range to be measured, and measures the neighboring cell common pilot channel in the selected bandwidth range;

The UE measures the neighboring cell common pilot channel within a preset bandwidth range.

The method according to claim 12, wherein before the UE measures the channel of the neighboring cell, the method further includes:

Sending, by the UE, a request message for measuring a neighbor cell indication to the network side;

The network side generates and sends a measurement neighbor cell indication message to the UE according to the received request message.

Then, the UE measures the neighboring cell as: the UE performs measurement on the neighboring cell according to the received measurement neighbor cell indication message.

The method according to claim 15, wherein if the channel of the neighboring cell is a common channel, the UE measures the channel of the neighboring cell as any combination of the following:

The UE measures the common channel of the neighboring cell specified by the network side;

At least one inherent common channel to be tested is preset in the UE, and the UE measures the physical quantity of the common common channel to be tested of the neighboring cell that needs to be measured.

17. The method according to claim 15, wherein if the neighboring cell has a letter The channel is a common pilot channel, and the UE measures the channel of the neighboring cell as any combination of the following conditions:

The UE measures a common pilot channel in a total bandwidth range of the neighboring cell;

ΌΈ measuring the neighboring cell common pilot channel within the current receiving bandwidth of the UE; the UE measuring the neighboring cell common pilot channel within a bandwidth range specified by the network side; the UE selecting a bandwidth range to be measured, and measuring the selected The neighboring cell common pilot channel within the bandwidth range;

The UE performs measurement according to the measurement type indicated by the network side, that is, if the measurement type is the same frequency measurement, the UE measures the common pilot channel in the same frequency bandwidth range of the neighboring cell; if the measurement type is the inter-frequency measurement, the UE Measuring a common pilot channel within the inter-cell heterofrequency bandwidth.

The method according to any one of claims 11 to 17, characterized in that the channel is measured as: measuring Es/Io, SINR, CQI, received power or any combination of the above.

A method for measuring a channel in an LTE system, characterized in that the UE receives a measurement indication from a network side and performs measurement on a channel of a cell that needs to be measured.

The method according to claim 19, wherein if the channel to be measured is a common channel, the UE measures the channel of the cell to be measured as any combination of the following conditions:

The UE measures the common channel of the designated cell on the network side;

At least one inherent common channel to be tested is preset in the UE, and the UE is fixed to the cell. There is a common channel to be measured for measurement.

The method according to claim 19, wherein, if the channel of the cell to be measured is a common pilot channel, the UE measures the determined channel to be measured as any combination of the following cases: :

The UE measures a common pilot channel in a total bandwidth range of the cell;

The UE measures the cell common pilot channel within the wide range of the UE currently receiving the band; the UE measures the cell common pilot channel within the bandwidth range specified by the network side; the UE selects the bandwidth range to be measured, and measures the selected a common pilot channel of the cell within a bandwidth range;

The UE measures the common pilot channel of the cell in the preset bandwidth range; the UE performs measurement according to the measurement type indicated by the network side, that is, if the measurement type is the same frequency measurement, the UE measures the intra-frequency bandwidth of the cell. The common pilot channel; if the measurement type is inter-frequency measurement, the UE measures the common pilot channel in the inter-frequency bandwidth of the cell.

An apparatus for measuring a channel in an LTE system, the apparatus comprising: an indication receiving and parsing module, configured to receive a measurement indication from a network side, and parse the received measurement indication to obtain a measurement parameter; Sending the obtained measurement parameters to the measurement module;

The device according to claim 22, wherein the measurement module further comprises a parameter saving unit, configured to save the intrinsic measurement parameter, and the measurement module is further configured to perform channel according to the inherent measurement parameter of the parameter storage unit. measuring.

24. Apparatus according to claim 22 wherein said measurement module further comprises a channel selection unit for selecting a channel for which measurement is to be performed.

The apparatus according to claim 22, wherein the measuring module further comprises a frequency band selecting unit, configured to: when the channel selecting unit selects the channel for measurement to be common When the pilot channel is selected, the frequency band in which the measurement is made is selected.

The device according to any one of claims 22 to 25, wherein the device further comprises a result reporting module, configured to determine whether the measurement result of the measurement module satisfies the reporting condition, and the measurement result is obtained according to the determination result. Reported to the network side.

27. Apparatus according to claim 26 wherein the apparatus is located in the UE.

28. A device for measuring a channel in an LTE system, the device comprising: a measurement parameter module, configured to save a measurement parameter required for a measurement channel;

The device according to claim 28, wherein the measurement parameter module comprises:

a channel selection unit, configured to select a channel that needs to be measured;

The frequency band selecting unit is configured to select a frequency band to be measured when the channel selected by the channel selecting unit to perform measurement is a common pilot channel.

The device according to claim 29, further comprising: a condition determining module, configured to determine whether the measurement result of the measurement module meets a preset condition, and notify the measurement module to perform a channel on the neighboring cell according to the determination result measuring.

The device according to claim 30, wherein the condition judging module further comprises a result reporting module, configured to determine whether the measurement result of the measurement module satisfies the reporting condition, and report the measurement result to the network according to the judgment result. side.

The device according to any one of claims 28 to 31, wherein the device further comprises: a request receiving and parsing module, configured to send a measurement request message to the network side according to the notification of the condition determining module; Receiving a measurement indication from the network side, and parsing the received measurement indication to obtain a measurement parameter; and sending the obtained measurement parameter to the measurement module;

The condition determining module is configured to determine whether the measurement result of the measurement module meets the preset bar. And instructing the receiving and parsing module to send the request message according to the judgment result notification.

33. Apparatus according to claim 32 wherein the apparatus is located in the UE.