CN101127998B - Method and terminal for adjacent cell measurement of terminal in long evolving system - Google Patents

Abstract

A method for a terminal to measure adjacent cells in a long term evolution system, comprising: (1) the terminal receives a measurement control message sent by the network side; (2) the terminal decides according to the measurement method specified in the measurement control message or the terminal itself The neighbor cell measurement method is used to measure the neighbor cell. The terminal can use same-frequency measurement for adjacent cells on the same floor, or use same-frequency measurement/different-frequency measurement according to the conditions of adjacent cells, and can use different-frequency measurements for different-layer adjacent cells, or use same-frequency measurement according to the conditions of adjacent cells / Different frequency measurement. The present invention provides multiple schemes for terminals in the LTE system to receive neighboring cells, and solves the problem that there is no related measurement method in the LTE system. Moreover, through the measurement method of the present invention, the situation that only part of the neighboring cell information is received or the neighboring cell information cannot be received cannot occur, thereby improving the accuracy of reception.

Description

Method and terminal for terminal to perform neighbor cell measurement in long term evolution system

technical field

The present invention relates to the communication field, in particular to a method for a terminal to measure adjacent cells, in particular to a method for a terminal (UE) in a long-term evolution (LTE) system to measure adjacent cells and a terminal in the LTE system.

Background technique

In a WCDMA (Wideband Code Division Multiple Access) communication system, the same-frequency adjacent cell means that the carrier frequency of the adjacent cell is the same as the carrier frequency of the serving cell and the UE can receive the target cell without adjusting the receiver frequency of the terminal. common channel information, the inter-frequency cell is that the carrier frequency of the neighboring cell is different from the carrier frequency of the serving cell.

In a WCDMA communication system, the method for UE to measure adjacent cells is as follows: a1: the network sends a system message or a dedicated measurement control message, and the message contains the information of adjacent cells with the same frequency or adjacent cells with different frequencies; The same-frequency neighbor cell information or different-frequency neighbor cell information delivered by the side performs corresponding same-frequency neighbor cell measurement or different-frequency neighbor cell measurement, so as to determine whether to perform cell reselection/cell handover based on the neighbor cell information measured by the UE.

With the continuous development of 3G (third generation) mobile communication systems, LTE was proposed and deployed in 3GPP. Due to the advantages of higher user data rate, improved system capacity and coverage, and reasonable and flexible 3G spectrum allocation, LTE has developed rapidly. In the LTE system, adjacent cells are divided into two types: same-layer adjacent cells and different-layer adjacent cells. However, for the cell in the LTE system, in addition to the frequency where the cell is located, the bandwidth where the cell is located also needs to be considered. Therefore, there are currently two different definition methods for adjacent cells on the same layer and adjacent cells on different layers. The first definition method is as follows: the neighboring cells with the same frequency as the serving cell are called the same-layer neighboring cells, and the neighboring cells with different frequencies from the serving cell are called different-layer neighboring cells. The second definition method is: adjacent cells with the same frequency and same bandwidth as the serving cell are called same-layer adjacent cells, and adjacent cells with different frequency and/or different bandwidth than the serving cell are called different-layer adjacent cells.

Currently, in the LTE system, there are two different definition methods for same-layer neighbor cells and different-layer neighbor cells. With different definition methods, the UE does not have a related neighbor cell measurement scheme. As a result, there is currently no neighbor cell measurement for the LTE system, and thus no It is beneficial to the rapid development of the whole LTE system.

Contents of the invention

The purpose of the present invention is to provide a method for a terminal in an LTE system to measure adjacent cells and the terminal to solve the technical problem in the prior art that there is no method for measuring adjacent cells for a terminal in the LTE system.

In order to achieve the purpose of the present invention, a method for a terminal in a long-term evolution system to measure neighboring cells includes:

(1) The terminal receives the measurement control message sent by the network side;

(2) The terminal measures neighboring cells according to the measurement mode specified in the measurement control message.

Step (2) is: when the measurement method indicated by the network side is the same-frequency measurement, the measurement of the adjacent cells on the same layer by the terminal is the same-frequency measurement. If the terminal does not adjust the frequency of the local receiver, it can receive the common When receiving channel messages, the terminal also performs intra-frequency measurement on the inter-layer neighboring cells.

Step (2) further includes: when receiving the measurement method indicated by the network side as inter-frequency measurement, the terminal performs inter-frequency measurement on the inter-layer adjacent cell.

Step (2) is: if receiving an instruction from the network side to perform same-frequency measurement and information on same-layer neighbor cells, the terminal performs same-frequency measurement on the same-layer neighbor cell; if receiving an instruction from the network side to perform inter-frequency measurement and Cell information, the terminal performs inter-frequency measurement on the inter-layer neighboring cell.

Step (2) is: receiving the inter-frequency measurement and the same-layer/different-layer adjacent cell information indicated by the network side, performing inter-frequency measurement on the different-layer adjacent cell, and adjusting the frequency of the local receiver to receive the same-layer Neighboring cell common channel information, inter-frequency measurement is also performed on the adjacent cells of the same layer.

Step (2) also includes: receiving the same-frequency measurement and the same-layer/different-layer adjacent cell information indicated by the network side, performing same-frequency measurement on the same-layer adjacent cell, and receiving different signals without adjusting the frequency of the local receiver. The same-frequency measurement is also performed on the adjacent cells of different layers. 7. The method according to claim 5, characterized in that the step (2) further comprises: receiving the same-frequency measurement and the information of the adjacent cells on the same layer received from the network side, and performing the same-frequency measurement on the adjacent cells on the same layer.

By judging whether the frequency band where the adjacent cell is located falls within the range of the frequency band where the terminal is located, it is judged whether the terminal needs to adjust the frequency of the local receiver to receive the common channel message of the adjacent cell of different layers. Within the range of the frequency band where the terminal is located, the terminal can receive the common channel message of the neighboring cells of different layers without adjusting the frequency of the local receiver.

The method further includes: the terminal performs inter-frequency measurement in the measurement gap, the measurement gap is indicated in the measurement control message issued by the network side or the network side is allocating time domain and/or frequency domain resources to the terminal Indicated in the dispatching information.

The method also includes: the terminal performs inter-frequency measurement at a predefined inter-frequency measurement time, or when the current idle time domain/time resource of the terminal is greater than the condition satisfied by the minimum inter-frequency measurement that can be performed, the terminal performs inter-frequency measurement.

Before step (2), it also includes: the terminal needs to determine whether the neighboring cell is the same-layer neighboring cell or a different-layer neighboring cell belonging to the serving cell of the terminal.

A terminal in a long term evolution system, comprising:

The first neighbor cell measurer: performs intra-frequency measurement or inter-frequency measurement on neighboring cells according to the measurement method specified in the measurement control message delivered by the network side.

The first neighbor cell measurer further includes: a first same-frequency measurement unit: when the measurement method indicated by the network side is the same-frequency measurement, the measurement of the adjacent cells on the same layer is the same-frequency measurement. If the terminal does not adjust the local When the frequency of the receiver is able to receive the common channel message of the adjacent cell of the different layer, the terminal also performs the same-frequency measurement on the adjacent cell of the different layer; the first inter-frequency measurement unit: when receiving the measurement method indicated by the network side as the inter-frequency measurement, Inter-frequency measurement is performed on the inter-layer neighboring cells.

The first neighbor cell measurer further includes: a second same-frequency measurement unit: if receiving the same-frequency measurement and the same-layer neighbor cell information from the network side, the terminal performs the same-frequency measurement on the same-layer neighbor cell; Measuring unit: if receiving an instruction from the network side to perform inter-frequency measurement and inter-layer adjacent cell information, the terminal performs inter-frequency measurement on the inter-layer adjacent cell.

The first neighbor cell measurer further includes: a third same-frequency measurement unit: receiving the same-frequency measurement and the same-layer/different-layer neighbor cell information indicated by the network side, performing same-frequency measurement on the same-layer neighbor cells, and if no adjustment is required The frequency of the local receiver can receive the common channel message of the adjacent cell of the different layer, and also perform the same frequency measurement on the adjacent cell of the different layer; the third different frequency measurement unit: receive the different frequency measurement indicated by the network side and the same layer/different Inter-frequency measurement is performed on the adjacent cells on the same layer, and if the frequency of the local receiver needs to be adjusted to receive common channel messages from adjacent cells on the same layer, inter-frequency measurement is also performed on the adjacent cells on the same layer.

The first neighbor cell measurer further includes: a fourth same-frequency measurement unit: receives the same-frequency measurement indicated by the network side and the same-layer neighbor cell information, and performs same-frequency measurement on the same-layer neighbor cell; the fourth different-frequency measurement unit: receives According to the inter-frequency measurement and the same-layer/different-layer adjacent cell information indicated by the network side, perform inter-frequency measurement on the different-layer adjacent cell, and if it is necessary to adjust the frequency of the local receiver to receive the common channel message of the same-layer adjacent cell, the Inter-frequency measurement is also performed for adjacent cells on the same layer.

A method for a terminal to measure neighboring cells in a long-term evolution system, comprising: (1) the terminal receives a measurement control message delivered by the network side; (2) the terminal performs measurement on the neighboring cells according to a measurement method for the neighboring cells determined by itself Same frequency/different frequency measurement.

Before step (2), it also includes: the terminal needs to determine whether the neighboring cell is the same-layer neighboring cell or a different-layer neighboring cell belonging to the serving cell of the terminal.

Step (2) is: the measurement of adjacent cells on the same layer by the terminal is same-frequency measurement. If the terminal can receive the common channel message of adjacent cells on different layers without adjusting the frequency of the local receiver, the terminal also performs simultaneous measurement on the adjacent cells on different layers. Otherwise, perform inter-frequency measurement on the inter-layer neighbor cell.

The step (2) is: the measurement of the adjacent cells of the same layer by the terminal is the same frequency measurement, and the measurement of the different frequencies of the adjacent cells of different layers is performed.

Step (2) is: if the terminal needs to adjust the frequency of the local receiver to receive the common channel message of the adjacent cell on the same floor, the terminal performs inter-frequency measurement on the adjacent cell on the same floor, otherwise performs the same-frequency measurement on the adjacent cell on the same floor. Measurement.

Step (2) also includes: the terminal performs inter-frequency measurement on inter-layer neighboring cells.

Step (2) also includes: if it is not necessary to adjust the frequency of the local receiver to receive the common channel message of the adjacent cell of the different layer, the terminal performs the same frequency measurement on the adjacent cell of the different layer, otherwise performs the measurement of the adjacent cell of the different layer Measurement.

The terminal performs inter-frequency measurement in the measurement gap, the measurement gap is indicated in the measurement control message issued by the network side or in the scheduling information issued by the network side in allocating time domain and/or frequency domain resources to the terminal Instructed.

It also includes: the terminal performs inter-frequency measurement at a predefined inter-frequency measurement time; or, when the current idle resource of the terminal is greater than the condition satisfied by the minimum inter-frequency measurement that can be performed, the terminal performs inter-frequency measurement.

By judging whether the frequency band where the adjacent cell is located falls within the range of the frequency band where the terminal is located, it is judged whether the terminal needs to adjust the frequency of the local receiver to receive the common channel message of the adjacent cell of different layers. Within the range of the frequency band where the terminal is located, the terminal can receive the common channel message of the neighboring cells of different layers without adjusting the frequency of the local receiver.

A terminal in a long-term evolution system, including: a second neighbor cell measurer: the measurement of the same-layer neighbor cells is the same-frequency measurement, and if the frequency of the local receiver is not adjusted, the common channel message of the different-layer neighbor cells can be received. The same-frequency measurement is also performed on the different-layer adjacent cells, otherwise the different-frequency measurement is performed on the different-layer adjacent cells, or the measurement on the same-layer adjacent cells is the same-frequency measurement, and the different-frequency measurements are performed on different-layer adjacent cells, or If it is necessary to adjust the frequency of the local receiver to receive the common channel message of the adjacent cell of the same layer, perform inter-frequency measurement on the adjacent cell on the same layer; otherwise, perform same-frequency measurement on the adjacent cell on the same layer, and perform Neighboring cells perform inter-frequency measurement, or if it is necessary to adjust the frequency of the local receiver to receive common channel messages of the same-layer adjacent cells, perform inter-frequency measurement on the same-layer adjacent cells, otherwise perform simultaneous If it is not necessary to adjust the frequency of the local receiver to receive the common channel message of the different-layer neighboring cells, perform the same-frequency measurement on the different-layer neighboring cells; otherwise, the The inter-frequency measurement is performed on the inter-layer adjacent cells.

The method also includes: a neighbor cell type determiner: used for determining in advance whether the neighbor cell is the same-layer neighbor cell or a different neighbor cell belonging to the serving cell of the terminal when the received measurement control message does not include the neighbor cell type to be measured. Adjacent neighborhood.

A method for a terminal to measure adjacent cells in a long-term evolution system, comprising: the terminal receives a measurement control message containing information about adjacent cells sent by the network side; The terminal performs intra-frequency measurement on the adjacent cell, otherwise, the terminal performs inter-frequency measurement on the adjacent cell.

Compared with the prior art, the present invention provides multiple schemes for the terminals in the LTE system to receive neighboring cells, and solves the problem that there is no related measurement method in the LTE system. Moreover, through the measurement method of the present invention, the situation that only part of the neighboring cell information is received or the neighboring cell information cannot be received cannot occur, thereby improving the accuracy of reception.

Description of drawings

Fig. 1 is the principle structural diagram of LTE broadband wireless mobile communication system;

Fig. 2 is a flow chart of a method for a terminal to measure adjacent cells in the LTE system of the present invention;

Fig. 3 is the first example figure of the present invention;

Fig. 4 is the second example figure of the present invention;

Fig. 5 is the third example figure of the present invention;

Fig. 6 is the fourth example figure of the present invention;

Fig. 7 is the fifth example figure of the present invention;

Fig. 8 is the sixth example figure of the present invention;

FIG. 9 is a schematic block diagram of a terminal structure for realizing neighbor cell measurement in the LTE system of the present invention;

FIG. 10 is a flowchart of a second method for a terminal to measure neighboring cells in an LTE system according to the present invention;

FIG. 11 is a flowchart of a third method for a terminal to measure neighboring cells in an LTE system according to the present invention.

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings.

The method is based on the LTE broadband wireless mobile communication system as shown in FIG. 1 . In the figure, ASGW (Access Service Gateway, access service gateway) represents the access service gateway entity of the broadband wireless mobile communication system, which is used to complete functions such as user access in the system and routing and forwarding of signaling and services in the system. eNodeB represents a new type of Node B logical node, which is used to complete the physical layer of the air interface and some high-level protocols. It is the node that the mobile terminal visits for the first time when it accesses the system. The RRMServer (radio resource management server) in the figure is an optional functional entity, which is mainly used to assist in the completion of the radio resource management process between cells in the broadband wireless mobile communication system, and it may also be the mobility management process between multiple cells Provide a data source. The X1 interface represents the connection relationship between eNodeBs in the broadband wireless mobile communication system, is a channel for control plane signaling transmission between eNodeBs, and is an internal interface in the radio access network. The S1 interface is the interface between the wireless access network and its upper node in the broadband wireless mobile communication system, and is used to provide a transmission link between the control plane and the user plane. The O1 interface shown in the figure is an optional interface. When the optional functional entity RRM Server is deployed in E-UTRAN, the eNodeB needs to install the O1 interface to realize the connection with the RRM Server. Usually, the sending of the UE message by the network side in the LTE system means that the ASGW and the eNodeB send the message to the UE.

Please refer to FIG. 2 , which is a flowchart of a method for a terminal to measure neighboring cells in an LTE system according to the present invention. it includes:

S110: The terminal receives the measurement control message sent by the network side;

S120: The terminal performs intra-frequency measurement or inter-frequency measurement on neighboring cells according to the measurement mode specified in the measurement control message.

Each step is described in detail below.

1. S110

The network side sends a measurement control message, and the measurement control message can be a system message or a dedicated measurement control message. Here, the dedicated measurement control message refers to a measurement control message sent by the network side to the terminal when the terminal is in a connected state . In the measurement control message, the measurement mode indicated by the network side to the adjacent cell and the information of the adjacent cell are included. The measurement mode of the adjacent cells is same-frequency measurement or inter-frequency measurement. Neighboring cell information may include the type of neighboring cell, that is, the neighboring cell is the same-layer neighboring cell or different-layer neighboring cell of the serving cell of the terminal, including related information of neighboring cells, such as a list of neighboring cells, receiving common channels of neighboring cells (such as BCH channel) The information required for the message, etc. When the specified measurement mode is inter-frequency measurement, the measurement control message may also include measurement gap (measurement gap) information, which is used for the terminal to perform inter-frequency adjacent cell measurement with the specified measurement gap.

2. S120

If the adjacent cells in the received measurement control message are not distinguished, that is, the adjacent cells are not classified into same-frequency adjacent cells, different-frequency adjacent cells, same-layer adjacent cells, or different-layer adjacent cells, or other classifications, the terminal shall determine Whether the neighboring cell is a same-layer neighboring cell or a different-layer neighboring cell belonging to the serving cell of the terminal.

The terminal measures the neighboring cell according to the measurement mode specified in the measurement control message. The following is divided into four situations to introduce the specific measurement process.

A: The measurement of adjacent cells on the same layer by the terminal is same-frequency measurement, and the measurement of adjacent cells on different layers may be same-frequency measurement or different-frequency measurement.

When the measurement method indicated by the network side is the same-frequency measurement, the measurement of the adjacent cells on the same layer by the terminal is the same-frequency measurement. Intra-frequency measurement is also performed on the adjacent cells of different layers.

When receiving the measurement manner indicated by the network side as inter-frequency measurement, the terminal performs inter-frequency measurement on the inter-layer neighboring cell.

(1) Neighboring cells on the same layer refer to the same frequency and bandwidth as the serving cell; neighboring cells on different layers refer to different frequencies or different bandwidths from the serving cell;

The measurement of adjacent cells on the same layer by the UE is the same-frequency measurement; the UE decides to perform the same-frequency measurement or different-frequency measurement on the adjacent cells of the different layer according to the situation of the adjacent cells on the different layer. As shown in FIG. 3 and FIG. 4 , Cell2 is the same-layer cell of Cell1 , and the measurement of Cell2 by UE1 and UE2 is same-frequency measurement. Cell3 is a different-layer cell of Cell1. Since the frequency band of the adjacent cell cell3 falls within the range of the frequency band of UE1 (judgment method 1), in other words, the center frequency of the adjacent cell cell3 falls within the frequency range of UE1 (judgment method 2), the essence means that UE1 can receive cell3 public channel (such as BCH channel) message without adjusting the frequency of the local receiver, and UE1's measurement of Cell3 is same-frequency measurement. If the UE needs to adjust the frequency of the local receiver to receive the common channel information of the neighboring cell, the UE performs inter-frequency measurement on the inter-layer neighboring cell. For example, UE2's measurement of Cell3 is inter-frequency measurement. In Figure 3, the bandwidth of UE1 and UE2 is 10.625MHz, and there is only one SCH channel located in the middle of the transmission bandwidth. Neighboring cells perform co-frequency measurements. In Fig. 4, the bandwidth of UE1 and UE2 is 10MHz, when the transmission bandwidth of the cell is 20MHz, one cell has two SCH channels. In the case of FIG. 4 , judging method 1 can be used to judge whether the UE can perform intra-frequency measurement on neighboring cells of different layers.

(2) Neighboring cells of the same layer that are issued refer to the same frequency as the serving cell; adjacent cells of different layers refer to different frequencies. At this time, the UE's measurement of the adjacent cells on the same layer is the same-frequency measurement; the UE's measurement of the different-layer adjacent cells may be the same-frequency measurement or different frequency measurement.

Taking Fig. 5 as an example, Cell2 and Cell4 are cells of the same layer of Cell1, UE1 and UE2 measure Cell2 and Cell4 on the same frequency; Cell3 is a cell of a different layer of Cell1. Since the frequency band of the adjacent cell cell3 falls within the range of the frequency band of UE1 (judgment method 1), in other words, the center frequency of the neighboring cell cell3 falls within the frequency range of UE1 (judgment method 2), which essentially means that UE1 does not need to By adjusting the frequency of the receiver at the local end, the message of the common channel (such as the BCH channel) of cell3 can be received, and the measurement of Cell3 by UE1 is same-frequency measurement. If the UE needs to adjust the frequency of the local receiver to receive the common channel information of the neighboring cell, the UE performs inter-frequency measurement on the inter-layer neighboring cell. For example, UE2's measurement of Cell3 is inter-frequency measurement.

To sum up, when the UE receives the message:

If the network side instructs to perform intra-frequency measurement and sends the information of adjacent cells on the same layer or/and adjacent cells on different layers, the UE performs intra-frequency measurement on the adjacent cells on the same layer; the UE does not receive the frequency according to whether it needs to adjust the frequency of the local receiver. The manner of inter-layer adjacent cells determines whether the measurement of inter-layer adjacent cells can be the same-frequency measurement, and if yes, the same-frequency measurement can be performed.

If the network side instructs inter-frequency measurement and delivers inter-layer neighboring cell information, the UE performs inter-frequency measurement.

The terminal performs inter-frequency measurement in the indicated measurement gap, the measurement gap is indicated in the measurement control message sent by the network side or the network side sends the scheduling when allocating time domain and/or frequency domain resources to the terminal indicated in the information.

In addition, the terminal performs inter-frequency measurement at a predefined inter-frequency measurement time. The terminal may also perform inter-frequency measurement when it detects that the current idle resource is greater than the condition satisfied by the minimum inter-frequency measurement that can be performed. The conditions satisfied by the minimum inter-frequency measurement include the minimum time/time-domain resources required by the inter-frequency measurement, and so on.

It can be known from the above that the timing for the terminal to perform inter-frequency measurement may be set by the network side, or may be pre-set, or may be determined according to the current specific resources of the terminal.

B. Perform same-frequency measurement on adjacent cells on the same floor, and perform different-frequency measurements on adjacent cells on different floors

Neighboring cells of the same layer/neighboring cells of different layers are for the first definition method (neighboring cells with the same frequency as the serving cell are called adjacent cells of the same layer, and adjacent cells with a different frequency than the serving cell are called adjacent cells of different layers) or For the second definition method (neighboring cells with the same frequency and same bandwidth as the serving cell are called same-layer neighboring cells, and neighboring cells with different frequencies and/or different bandwidths as the serving cell are called different-layer neighboring cells), if receiving Instruct the network side to perform same-frequency measurement and the information of adjacent cells on the same layer, and the terminal performs same-frequency measurement on the adjacent cells on the same layer; Different-layer adjacent cells perform different-frequency measurements.

If the network side instructs inter-frequency measurement and delivers inter-layer neighboring cell information, the UE performs inter-frequency measurement.

The terminal performs inter-frequency measurement at the indicated measurement gap gap, which is indicated in the measurement control message issued by the network side or issued by the network side when allocating time domain and/or frequency domain resources to the terminal. as indicated in the schedule information.

In addition, the terminal performs inter-frequency measurement at a preset inter-frequency measurement time. The terminal may also perform inter-frequency measurement when it detects that the current idle resource is greater than the condition satisfied by the minimum inter-frequency measurement that can be performed. The conditions satisfied by the minimum inter-frequency measurement include the minimum time/time-domain resources required by the inter-frequency measurement.

Taking Figure 6 as an example, Cell2 is the same-layer cell of Cell1, UE1 and UE2 perform same-frequency measurement on Cell2; Cell3 is a different-layer cell of Cell1, and UE1 and UE2 perform different-frequency measurement on Cell3.

C. UE's measurement of neighboring cells on the same layer may be same-frequency measurement or different-frequency measurement; UE's measurement of different-layer neighboring cells may be same-frequency measurement or different-frequency measurement.

The terminal receives the inter-frequency measurement and the same-layer/different-layer adjacent cell information indicated by the network side, performs inter-frequency measurement on the different-layer adjacent cell, and if it needs to adjust the frequency of the local receiver to receive the common channel message of the same-layer adjacent cell, Inter-frequency measurement is also performed on the adjacent cells on the same layer.

The terminal receives the same-frequency measurement and the same-layer/different-layer neighbor cell information indicated by the network side, performs same-frequency measurement on the same-layer neighbor cell, and can receive the common channel message of the different-layer neighbor cell without adjusting the frequency of the local receiver , also perform intra-frequency measurement on the inter-layer neighboring cells.

(1) Neighboring cells of the same layer that are issued refer to the same frequency and bandwidth as the serving cell; adjacent cells of different layers refer to different frequencies or different bandwidths.

At this time, the UE's measurement of adjacent cells on the same layer may be intra-frequency measurement or inter-frequency measurement; the UE's measurement of inter-layer adjacent cells may be intra-frequency measurement or inter-frequency measurement. For example, the design and scenario in Figure 7: Cell2 is the same-layer cell of Cell1, UE2 measures the same frequency for Cell2, and UE1 measures different frequency for Cell2; Cell3 is a different-layer cell of Cell1, and UE1 measures Cell3 as Intra-frequency measurement; UE2's measurement of Cell3 is inter-frequency measurement.

(2) Neighboring cells of the same layer that are issued refer to the same frequency as the serving cell; adjacent cells of different layers refer to different frequencies.

At this time, the UE's measurement of adjacent cells on the same layer may be intra-frequency measurement or inter-frequency measurement; the UE's measurement of inter-layer adjacent cells may be intra-frequency measurement or inter-frequency measurement. The same can also be explained by the scene shown in Figure 7.

That is to say, after the UE receives the message:

If the network side instructs to perform intra-frequency measurement and delivers the same-layer neighbor cell information or/and different-layer neighbor cell information, the UE will judge whether the UE needs to adjust the information of the same-layer neighbor cell or/and different-layer neighbor cell information. The frequency of the local receiver is used to receive the common channel information of the adjacent cell to determine whether the measurement of the cell can be performed on the same frequency. If it is not necessary to adjust the frequency of the local receiver to receive the common channel information of the adjacent cell, perform the same frequency measurement ;

If the network side instructs inter-frequency measurement and delivers the same-layer neighboring cell information or/and different-layer neighboring cell information, the UE performs inter-frequency measurement on the same-layer neighboring cell or/and different-layer neighboring cells.

The terminal performs inter-frequency measurement in the indicated measurement gap (measurement gap), the measurement gap is indicated in the measurement control message issued by the network side or the network side allocates time domain and/or frequency domain to the terminal Indicated in the resource delivery scheduling information.

In addition, the terminal performs inter-frequency measurement at a preset inter-frequency measurement time. The terminal may also perform inter-frequency measurement when it detects that the current idle resource is greater than the condition satisfied by the minimum inter-frequency measurement that can be performed. The conditions satisfied by the minimum inter-frequency measurement include the minimum time/time-domain resources required by the inter-frequency measurement.

D. The UE's measurement of adjacent cells on the same layer may be intra-frequency measurement or inter-frequency measurement; the UE's measurement of inter-layer adjacent cells is inter-frequency measurement.

Regardless of whether the first definition method or the second definition method is used for the same-layer/different-layer adjacent cells, the terminal receives the inter-frequency measurement and the same-layer/different-layer adjacent cell information indicated by the network side, and performs Inter-frequency measurement, and if it is necessary to adjust the frequency of the local receiver to receive the common channel messages of the adjacent cells on the same floor, perform inter-frequency measurement on the adjacent cells on the same floor. The terminal receives the intra-frequency measurement and the information of the adjacent cells on the same layer indicated by the network side, and performs the same-frequency measurement on the adjacent cells on the same layer.

For example, the design and scenario in Figure 8: Cell2 and Cell4 are the same-layer cells of Cell1, because UE1 and UE2 cannot all receive the BCH channel information of Cell2 and Cell4, so the receiver frequency of the terminal needs to be adjusted to receive all the BCH channels of Cell2 and Cell4 information. Therefore, the measurement of Cell2 and Cell4 by UE1 and UE2 is inter-frequency measurement, and the measurement of Cell2 by UE3 is same-frequency measurement; Cell3 is a different-layer cell of Cell1, and the measurement of Cell3 by UE1, UE2, and UE3 is inter-frequency measurement.

After the UE receives the measurement control message: If the network side instructs the same-frequency measurement and sends the information of the same-layer neighbor cell, the UE needs to determine whether the same-frequency measurement of the cell can be performed for the information of the same-layer neighbor cell. If possible, intra-frequency measurement is performed; if the network side instructs inter-frequency measurement and delivers inter-layer neighboring cell information, the UE's measurement of inter-layer neighboring cells is inter-frequency measurement.

The terminal performs inter-frequency measurement at the indicated measurement gap gap, which is indicated in the measurement control message issued by the network side or issued by the network side when allocating time domain and/or frequency domain resources to the terminal. as indicated in the schedule information.

In addition, the terminal performs inter-frequency measurement at a preset inter-frequency measurement time. The terminal may also perform inter-frequency measurement when it detects that the current idle resource is greater than the condition satisfied by the minimum inter-frequency measurement that can be performed. The conditions satisfied by the minimum inter-frequency measurement include the minimum time/time-domain resources required by the inter-frequency measurement.

Please refer to FIG. 9 , which is a schematic structural diagram of a terminal in a long term evolution system disclosed in the present invention. it includes:

The first neighbor cell measurer 11: performs intra-frequency measurement or inter-frequency measurement on the neighboring cell according to the measurement method specified in the measurement control message delivered by the network side.

The neighbor cell measurer further includes:

The first same-frequency measurement unit: when the measurement method indicated by the network side is the same-frequency measurement, the measurement of the adjacent cells on the same layer is the same-frequency measurement. If the terminal does not adjust the frequency of the local receiver, it can receive the common When receiving channel messages, the terminal also performs co-frequency measurement on the inter-layer neighboring cells;

The first inter-frequency measurement unit: when receiving the measurement mode indicated by the network side as inter-frequency measurement, perform inter-frequency measurement on the inter-layer adjacent cells.

The neighbor cell measurer may further include:

The second same-frequency measurement unit: if receiving an instruction from the network side to perform same-frequency measurement and the information of the same-layer neighbor cell, the terminal performs the same-frequency measurement on the same-layer neighbor cell;

The second inter-frequency measurement unit: if receiving an instruction from the network side to perform inter-frequency measurement and inter-frequency adjacent cell information, the terminal performs inter-frequency measurement on the inter-frequency adjacent cell.

The neighbor cell measurer may further include:

The third same-frequency measurement unit: receives the same-frequency measurement indicated by the network side and the same-layer/different-layer adjacent cell information, performs same-frequency measurement on the same-layer adjacent cells, and can receive different signals without adjusting the frequency of the local receiver. The common channel message of adjacent cells in the same layer, and the same frequency measurement is also performed on the adjacent cells in different layers;

The third inter-frequency measurement unit: receives the inter-frequency measurement indicated by the network side and the information of the same-layer/different-layer adjacent cells, performs inter-frequency measurement on the different-layer adjacent cells, and adjusts the frequency of the local receiver to receive the same layer if necessary Neighboring cell common channel information, inter-frequency measurement is also performed on the adjacent cells of the same layer.

The neighbor cell measurer may further include:

The fourth same-frequency measurement unit: receives the same-frequency measurement indicated by the network side and the information of the adjacent cells on the same layer, and performs the same-frequency measurement on the adjacent cells on the same layer;

The fourth inter-frequency measurement unit: receives the inter-frequency measurement indicated by the network side and the information of the same-layer/different-layer adjacent cells, performs inter-frequency measurement on the different-layer adjacent cells, and adjusts the frequency of the local receiver to receive the same-layer Neighboring cell common channel information, inter-frequency measurement is also performed on the adjacent cells of the same layer.

In the method disclosed above, the terminal performs intra-frequency measurement or inter-frequency measurement on the adjacent cell according to the measurement method specified by the network side. In addition, the terminal may also decide to use same-frequency measurement or different-frequency measurement for neighboring cells.

Please refer to FIG. 10 , which is another method for a terminal to measure neighboring cells in a long term evolution system according to the present invention. it includes:

S210: The terminal receives the measurement control message delivered by the network side. The measurement control message may include neighboring cell information. However, the measurement control message may not include the measurement mode specified for the neighboring cell.

S220: The terminal measures the neighboring cell according to a self-determined measurement manner for the neighboring cell.

1. Step S210

The measurement control message on the network side of the present invention does not include the measurement method for neighboring cells. At this time, the terminal needs to determine the measurement method for neighboring cells to measure neighboring cells. In addition, the measurement control message delivered by the network side may include the type of the neighboring cell, or may not include the type of the neighboring cell. When the type of adjacent cell is not included in the measurement control message, the terminal can decide the type of adjacent cell to be measured by itself, that is, if the adjacent cell in the received measurement control message is not distinguished, that is, the adjacent cell is not divided into Same-frequency adjacent cells or different-frequency adjacent cells or same-layer adjacent cells or different-layer adjacent cells or other classifications, the terminal needs to determine whether the adjacent cell is the same-layer adjacent cell or a different-layer adjacent cell belonging to the serving cell of the terminal. For example, when the adjacent cell information in the measurement control message includes the frequency band of the adjacent cell, the terminal can compare its frequency band with the frequency band of the serving cell of the terminal, or compare the center frequency of the adjacent cell with the frequency band of the serving cell of the terminal. After comparing the center frequency of the cell, it is determined whether the neighboring cell belongs to the same-layer neighboring cell of the serving cell or a different-layer neighboring cell.

2. Step S220

A: The measurement of adjacent cells on the same layer by the terminal is same-frequency measurement. If the terminal can receive common channel messages of adjacent cells on different layers without adjusting the frequency of the local receiver, the terminal also performs same-frequency measurement on the adjacent cells on the same layer; otherwise , to perform inter-frequency measurement.

The terminal performs inter-frequency measurement at the indicated measurement gap gap, which is indicated in the measurement control message issued by the network side or issued by the network side when allocating time domain and/or frequency domain resources to the terminal. as indicated in the schedule information.

In addition, the terminal performs inter-frequency measurement at a preset inter-frequency measurement time. The terminal may also perform inter-frequency measurement when it detects that the current idle resource is greater than the condition satisfied by the minimum inter-frequency measurement that can be performed. The conditions satisfied by the minimum inter-frequency measurement include the minimum time/time domain resources required by the inter-frequency measurement.

B. The terminal performs same-frequency measurement on adjacent cells on the same layer, and performs inter-frequency measurement on the adjacent cells on different layers.

The terminal performs inter-frequency measurement at the indicated measurement gap gap, which is indicated in the measurement control message issued by the network side or issued by the network side when allocating time domain and/or frequency domain resources to the terminal. as indicated in the schedule information.

In addition, the terminal performs inter-frequency measurement at a preset inter-frequency measurement time. The terminal may also perform inter-frequency measurement when it detects that the current idle resource is greater than the condition satisfied by the minimum inter-frequency measurement that can be performed. The conditions satisfied by the minimum inter-frequency measurement include the minimum time/time-domain resources required by the inter-frequency measurement.

C. If the terminal needs to adjust the frequency of the local receiver to receive the common channel message of the adjacent cell on the same floor, the terminal performs inter-frequency measurement on the adjacent cell on the same floor; otherwise, performs same-frequency measurement on the adjacent cell on the same floor. The terminal can perform inter-frequency measurement on all inter-layer neighboring cells.

D: If the terminal needs to adjust the frequency of the local receiver to receive the common channel message of the adjacent cell on the same floor, the terminal performs inter-frequency measurement on the adjacent cell on the same floor; otherwise, performs same-frequency measurement on the adjacent cell on the same floor. The terminal can also perform intra-frequency/inter-frequency measurement on neighboring cells of different layers. For example, if it is not necessary to adjust the frequency of the local receiver to receive the common channel message of the adjacent cell of the different layer, the terminal performs the same-frequency measurement on the adjacent cell of the different layer, otherwise, performs the measurement of the different frequency on the adjacent cell of the different layer.

The terminal performs inter-frequency measurement at the indicated measurement gap gap, which is indicated in the measurement control message issued by the network side or issued by the network side when allocating time domain and/or frequency domain resources to the terminal. as indicated in the schedule information.

In addition, the terminal performs inter-frequency measurement at a preset inter-frequency measurement time. The terminal may also perform inter-frequency measurement when it detects that the current idle resource is greater than the condition satisfied by the minimum inter-frequency measurement that can be performed. The conditions satisfied by the minimum inter-frequency measurement include the minimum time/time-domain resources required by the inter-frequency measurement.

In the above method, the terminal judges whether the terminal needs to adjust the frequency of the local receiver to receive the common channel message of the adjacent cell of the different layer by judging whether the frequency band where the adjacent cell is located falls within the range of the frequency band where the terminal is located. If the frequency band where the cell is located falls within the range of the frequency band where the terminal is located, then the terminal can receive the common channel messages of adjacent cells on different layers without adjusting the frequency of the local receiver.

A terminal in a long term evolution system, which includes:

The second adjacent cell measurer: the measurement of the adjacent cells on the same layer is the same frequency measurement. If the local receiver frequency can be received without adjusting the frequency of the local receiver, when the common channel message of the adjacent cells on the different layer can be received, the same frequency is also performed on the adjacent cells on the different layer. Otherwise, perform inter-frequency measurement on the inter-layer neighbor cell.

For the terminal to determine the measurement mode of neighboring cells by itself, the present invention provides a terminal in the long-term evolution system, which includes:

The second neighbor cell measurer: measure the neighbor cell according to the measurement type of the neighbor cell that needs to be measured by itself:

The measurement of adjacent cells on the same floor is the same-frequency measurement. If the local receiver frequency can be received without adjusting the frequency of the local receiver to receive the common channel information of the adjacent cells on the different floor, the same-frequency measurement is also performed on the adjacent cells on the different floor; measure, or

The measurement of adjacent cells on the same layer is same-frequency measurement, and the measurement of different frequencies is performed on the adjacent cells of different layers, or

If it is necessary to adjust the frequency of the local receiver to receive the common channel message of the adjacent cell on the same layer, perform inter-frequency measurement on the adjacent cell on the same layer; otherwise, perform same-frequency measurement on the adjacent cell on the same layer, and perform The cell performs inter-frequency measurement, or, if it is necessary to adjust the frequency of the local receiver to receive the common channel message of the same-layer adjacent cell, perform inter-frequency measurement on the same-layer adjacent cell, otherwise perform same-frequency measurement on the same-layer adjacent cell , and perform inter-frequency measurement on the inter-layer adjacent cell, if it is not necessary to adjust the frequency of the local receiver to receive the common channel message of the inter-layer adjacent cell, perform same-frequency measurement on the inter-layer adjacent cell; Neighboring cells perform inter-frequency measurement.

Please refer to FIG. 11 , which is a third method for a terminal to measure neighboring cells in a long term evolution system provided by the present invention. it includes:

S510: The terminal receives a measurement control message including information of adjacent cells sent by the network side;

S520: If the terminal does not need to adjust the frequency of the local receiver to receive the common channel message of the neighboring cell, the terminal performs same-frequency measurement on the neighboring cell (S530), otherwise, the terminal performs inter-frequency measurement on the neighboring cell (S530).

In the above method, during the measurement process of the neighboring cell, the terminal does not need to judge whether the neighboring cell to be measured is the same-layer neighboring cell or a different-layer neighboring cell. The terminal only needs to judge whether it is necessary to adjust the frequency of the local receiver to receive the common channel information of the neighboring cell, and if so, perform inter-frequency measurement, otherwise perform same-frequency measurement. The design of the method is simple, and the terminal in the LTE system is used to receive the information of the adjacent cells.

The present invention provides multiple schemes for terminals in the LTE system to receive neighboring cells, and solves the problem that there is no related measurement method in the LTE system. Moreover, through the measurement method of the present invention, the situation that only part of the neighboring cell information is received or the neighboring cell information cannot be received cannot occur, thereby improving the accuracy of reception.

The above disclosures are only a few specific embodiments of the present invention, but the present invention is not limited thereto, and any changes conceivable by those skilled in the art should fall within the protection scope of the present invention.

Claims (26)

1. A method for a terminal in a long term evolution system to measure adjacent cells, characterized in that it comprises: (1) The terminal receives the measurement control message sent by the network side; (2) The terminal measures neighboring cells according to the measurement method specified in the measurement control message; when the measurement method is inter-frequency measurement, the timing for the terminal to perform inter-frequency measurement is set by the network side, or Pre-set, or determined according to the current specific resources of the terminal, wherein, if the inter-frequency measurement and the same-layer and/or different-layer neighboring cell information are received from the network side, the inter-layer neighboring cells are Inter-frequency measurement, and if it is necessary to adjust the frequency of the local receiver to receive the common channel message of the adjacent cell on the same layer, perform inter-frequency measurement on the adjacent cell on the same layer. 2. The method according to claim 1, characterized in that step (2) is: when receiving the measurement method indicated by the network side as co-frequency measurement, the measurement of the adjacent cells on the same layer by the terminal is co-frequency measurement, if the terminal When the common channel message of the neighboring cell of the different layer can be received without adjusting the frequency of the local receiver, the terminal also performs the same-frequency measurement on the neighboring cell of the different layer. 3 . The method according to claim 1 , wherein the step (2) further comprises: when the measurement mode indicated by the network side is inter-frequency measurement, the terminal performs inter-frequency measurement on the inter-layer adjacent cell. 4 . 4. The method according to claim 1, wherein the step (2) is: if the network side indicates to perform co-frequency measurement and the information of the same-layer neighbor cell is received, the terminal performs the same-frequency measurement on the same-layer neighbor cell ; If receiving an instruction from the network side to perform inter-frequency measurement and inter-layer adjacent cell information, the terminal performs inter-frequency measurement on the inter-layer adjacent cell. 5. The method according to claim 1, characterized in that, step (2) further comprises: receiving the same-frequency measurement indicated by the network side and the same-layer and/or different-layer adjacent cell information, performing the same-layer adjacent cell If the frequency measurement of the local receiver can be received without adjusting the frequency of the local receiver, the common channel information of the neighboring cells of different layers can also be measured on the same frequency of the neighboring cells of different layers. 6 . The method according to claim 1 , wherein the step (2) further comprises: receiving the same-frequency measurement and the information of the adjacent cells on the same layer received from the network side, and performing the same-frequency measurement on the adjacent cells on the same layer. 7 . 7. The method according to any one of claims 2, 4, and 5, characterized in that by judging whether the frequency band where the adjacent cell is located falls within the range of the frequency band where the terminal is located, it is judged whether the terminal needs to adjust the local terminal The frequency of the receiver is used to receive the common channel messages of the neighboring cells of different layers. If the frequency band of the neighboring cell falls within the range of the frequency band of the terminal, the terminal can receive the messages of the neighboring cells of the different layer without adjusting the frequency of the local receiver. Cell public channel message. 8. The method of any one of claims 3 to 5, wherein The terminal performs inter-frequency measurement in the measurement gap, the measurement gap is indicated in the measurement control message issued by the network side or in the scheduling information issued by the network side in allocating time domain and/or frequency domain resources to the terminal Instructed. 9. The method according to any one of claims 3 to 5, wherein the terminal performs inter-frequency measurement at a predefined inter-frequency measurement time, or When the current idle time domain and/or idle time resource of the terminal is greater than the condition satisfied by the minimum inter-frequency measurement that can be performed, the terminal performs inter-frequency measurement. 10 . The method according to claim 1 , further comprising: before step (2), the terminal determines whether the neighboring cell is the same-layer neighboring cell or a different-layer neighboring cell belonging to the serving cell of the terminal. 11 . 11. A terminal in a long-term evolution system, characterized in that it comprises: The first neighbor cell measurer: perform intra-frequency measurement or inter-frequency measurement on adjacent cells according to the measurement method specified in the measurement control message sent by the network side; when the measurement method is inter-frequency measurement, the timing for performing inter-frequency measurement It is set by the network side, or is set in advance, or is determined according to the current specific resources of the terminal. The first neighbor cell measurer includes: The third same-frequency measurement unit: receives the same-frequency measurement indicated by the network side and the information of the same-layer and/or different-layer adjacent cells, performs the same-frequency measurement on the same-layer adjacent cells, and can perform the same-frequency measurement without adjusting the frequency of the local receiver receiving a common channel message of an adjacent cell of a different layer, and performing co-frequency measurement on the adjacent cell of a different layer; The third inter-frequency measurement unit: receives the inter-frequency measurement indicated by the network side and the information of the same-layer and/or different-layer adjacent cells, performs inter-frequency measurement on the inter-layer adjacent cells, and adjusts the frequency of the local receiver if necessary Receive the common channel message of the adjacent cell on the same layer, and perform inter-frequency measurement on the adjacent cell on the same layer. 12. The terminal according to claim 11, wherein the first neighbor cell measurer further comprises: The first same-frequency measurement unit: when the measurement method indicated by the network side is the same-frequency measurement, the measurement of the adjacent cells on the same layer is the same-frequency measurement. If the terminal does not adjust the frequency of the local receiver, it can receive the common When receiving channel messages, the terminal also performs co-frequency measurement on the inter-layer neighboring cells; The first inter-frequency measurement unit: when receiving the measurement mode indicated by the network side as inter-frequency measurement, perform inter-frequency measurement on the inter-layer adjacent cells. 13. The terminal according to claim 11, wherein the first neighbor cell measurer further comprises: The second same-frequency measurement unit: if receiving an instruction from the network side to perform same-frequency measurement and the information of the same-layer neighbor cell, the terminal performs the same-frequency measurement on the same-layer neighbor cell; The second inter-frequency measurement unit: if receiving an instruction from the network side to perform inter-frequency measurement and the information of inter-layer neighboring cells, the terminal performs inter-frequency measurement on the inter-layer adjacent cells. 14. The terminal according to claim 11, wherein the first neighbor cell measurer further comprises: The fourth same-frequency measurement unit: receives the same-frequency measurement indicated by the network side and the information of the adjacent cells on the same layer, and performs the same-frequency measurement on the adjacent cells on the same layer; The fourth inter-frequency measurement unit: receives the inter-frequency measurement indicated by the network side and the information of the same-layer and/or different-layer adjacent cells, performs inter-frequency measurement on the different-layer adjacent cells, and adjusts the frequency reception of the local receiver if necessary The common channel message of adjacent cells of the same layer is also used for inter-frequency measurement of the adjacent cells of the same layer. 15. A method for a terminal in a long term evolution system to measure adjacent cells, characterized in that it comprises: (1) The terminal receives the measurement control message sent by the network side; (2) The terminal measures the adjacent cell according to the measurement method for the adjacent cell determined by itself; when the measurement method is inter-frequency measurement, the timing for the terminal to perform inter-frequency measurement is set by the network side, or It is preset or determined according to the current specific resources of the terminal. If the terminal needs to adjust the frequency of the local receiver to receive the common channel message of the adjacent cell of the same layer, the terminal performs Inter-frequency measurement, otherwise the same-frequency measurement is performed on the adjacent cells of the same layer. 16. The method according to claim 15, further comprising: before step (2), the terminal determines whether the neighboring cell is the same-layer neighboring cell or a different-layer neighboring cell belonging to the serving cell of the terminal. 17. The method according to claim 15 or 16, characterized in that step (2) is: The measurement of adjacent cells on the same layer by the terminal is same-frequency measurement. If the terminal can receive common channel messages of adjacent cells on different layers without adjusting the frequency of the local receiver, the terminal also performs same-frequency measurement on the adjacent cells on the same layer; The inter-frequency measurement is performed on the inter-layer adjacent cells. 18. The method according to claim 16, characterized in that step (2) is: The terminal performs same-frequency measurement on adjacent cells on the same layer, and performs inter-frequency measurement on the adjacent cells on different layers. 19. The method according to claim 18, wherein step (2) further comprises: the terminal performs inter-frequency measurement on inter-layer neighboring cells. 20. The method according to claim 18, characterized in that, step (2) further comprises: if it is not necessary to adjust the frequency of the local receiver to receive the common channel message of the adjacent cell of the different layer, the terminal performs a check on the adjacent cell of the different layer Intra-frequency measurement, otherwise, inter-frequency measurement is performed on the inter-layer neighboring cells. 21. The method according to claim 15, wherein the terminal performs inter-frequency measurement in a measurement gap, the measurement gap is indicated in the measurement control message issued by the network side or the network side is giving the The terminal allocates time domain and/or frequency domain resources as indicated in the scheduling information delivered. 22. The method according to claim 15, wherein the terminal performs inter-frequency measurement at a predefined inter-frequency measurement time; or, When the current idle resource of the terminal is greater than the condition satisfied by the minimum inter-frequency measurement that can be performed, the terminal performs inter-frequency measurement. 23. The method of claim 15, wherein, By judging whether the frequency band where the adjacent cell is located falls within the range of the frequency band where the terminal is located, it is judged whether the terminal needs to adjust the frequency of the local receiver to receive the common channel message of the adjacent cell of different layers. Within the range of the frequency band where the terminal is located, the terminal can receive the common channel message of the neighboring cells of different layers without adjusting the frequency of the local receiver. 24. A terminal in a long-term evolution system, comprising: The second adjacent cell measurer: the measurement of the adjacent cells on the same layer is the same frequency measurement. If the local receiver frequency can be received without adjusting the frequency of the local receiver, when the common channel message of the adjacent cells on the different layer can be received, the same frequency is also performed on the adjacent cells on the different layer. measurement, otherwise perform inter-frequency measurement on the inter-layer neighbor cell, or The measurement of adjacent cells on the same layer is the same frequency measurement, and the measurement of different frequencies is performed on adjacent cells of different layers, or If it is necessary to adjust the frequency of the local receiver to receive the common channel message of the adjacent cell of the same layer, perform inter-frequency measurement on the adjacent cell on the same layer; otherwise, perform same-frequency measurement on the adjacent cell on the same layer, and perform Neighboring cells perform inter-frequency measurements, or It is used to perform inter-frequency measurement on the same-layer adjacent cells when the frequency of the local receiver needs to be adjusted to receive common channel messages of the same-layer adjacent cells; otherwise, the same-frequency measurement is performed on the same-layer adjacent cells, and the different Inter-frequency measurement is performed on neighboring cells on the same floor. If there is no need to adjust the frequency of the local receiver to receive common channel messages from neighboring cells on different floors, the same-frequency measurement is performed on the neighboring cells on different floors; otherwise, inter-frequency measurements are performed on the neighboring cells on different floors. Measurement. 25. The terminal according to claim 24, further comprising: Adjacent cell type determiner: used for the terminal to predetermine whether the adjacent cell belongs to the same-layer adjacent cell or the different-layer adjacent cell belonging to the serving cell of the terminal when the received measurement control message does not include the type of the adjacent cell to be measured. 26. A method for a terminal in a long term evolution system to measure neighboring cells, comprising: The terminal receives the measurement control message containing the neighbor cell information sent by the network side; If the terminal does not need to adjust the frequency of the local receiver to receive the common channel message of the adjacent cell, the terminal performs the same-frequency measurement on the adjacent cell, otherwise, the terminal performs inter-frequency measurement on the adjacent cell; when the measurement method is inter-frequency measurement The timing for the terminal to perform inter-frequency measurement is set by the network side, or is pre-set, or is determined according to the current specific resources of the terminal. Wherein, if the inter-frequency measurement and The same-layer and/or different-layer adjacent cell information, perform inter-frequency measurement on the different-layer adjacent cells, and if it is necessary to adjust the frequency of the local receiver to receive the common channel information of the same-layer adjacent cells, the same-layer adjacent cells also Perform split-frequency measurements.

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