CN101127998B - Method and terminal for adjacent cell measurement of terminal in long evolving system - Google Patents
Method and terminal for adjacent cell measurement of terminal in long evolving system Download PDFInfo
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Abstract
The utility model relates to a method for the terminal operating adjacent cell measurement in the long-term evolution system, comprising the following steps: (1) measuring control information is received by the terminal from the network side; (2) an adjacent cell is measured by the terminal according to the appointed measuring method received from the measuring control information or according to the discretionary measuring method by the terminal. Same frequency measurement can be adopted to the adjacent cells in the same layer, and either the same frequency measurement or the different frequency measurement is adopted to the adjacent cells in the same layer according to the circumstance of the adjacent cells; the different frequency measurement is adopted to the adjacent cells in different layers, and either the same frequency measurement or the different frequency measurement is adopted to the adjacent cells in different layers according to the circumstance of the adjacent cells. The utility model offers various technical proposals aiming at the terminal receiving the adjacent cell in the LTE system, solves the problem of no relevant measuring method in the prior LTE. Furthermore, the utility model eliminates the cases of partly receiving or no receiving of the adjacent cell information and improves the receiving accuracy.
Description
Technical Field
The present invention relates to the field of communications, and in particular, to a method for a terminal to perform neighbor cell measurement, and more particularly, to a method for a terminal (UE) to perform neighbor cell measurement in a Long Term Evolution (LTE) system and a terminal of the LTE system.
Background
In a WCDMA (wideband code division multiple access) communication system, the co-frequency neighbor cell means that the carrier frequency of the neighbor cell is the same as the carrier frequency of the serving cell and the UE can receive the common channel information of the target cell without adjusting the receiver frequency of the terminal, and the inter-frequency cell is that the carrier frequency of the neighbor cell is different from the carrier frequency of the serving cell.
In a WCDMA communication system, a method for measuring a neighboring cell by UE comprises the following steps: a 1: a network side issues a system message or a special measurement control message, wherein the message comprises the information of the same-frequency adjacent cell or the different-frequency adjacent cell; a 2: the terminal carries out corresponding same-frequency adjacent cell measurement or different-frequency adjacent cell measurement according to the same-frequency adjacent cell information or different-frequency adjacent cell information issued by the network side, so that whether cell reselection/cell switching is carried out or not can be determined according to the adjacent cell information measured by the UE.
With the continuous development of 3G (third generation) mobile communication systems, LTE is proposed and deployed in 3 GPP. Due to the advantages of being capable of obtaining higher user data rate, improving system capacity and coverage rate, reasonably and flexibly distributing 3G frequency spectrum and the like, the LTE is developed rapidly. In the LTE system, the neighbor cells are divided into two types, namely, a same-layer neighbor cell and a different-layer neighbor cell. However, due to the cells in the LTE system, in addition to the frequency of the cell, the bandwidth of the cell needs to be considered. Therefore, there are two different defining methods for the same-layer neighbor cell and the different-layer neighbor cell. 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 as follows: the adjacent cells with the same frequency and the same bandwidth as the serving cell are called the adjacent cells of the same layer, and the adjacent cells with different frequencies and/or different bandwidths from the serving cell are called the adjacent cells of different layers.
At present, in an LTE system, there are two different definition methods for a same-layer neighbor cell and a different-layer neighbor cell, and there is no related neighbor cell measurement scheme for different definition methods, so that there is no neighbor cell measurement for the LTE system at present, which is not favorable for the long-term development of the entire LTE system.
Disclosure of Invention
The invention aims to provide a method for measuring a neighboring cell by a terminal in an LTE (Long term evolution) system and the terminal, so as to solve the technical problem that no method for measuring the neighboring cell by the terminal in the LTE system exists in the prior art.
In order to achieve the purpose of the invention, a method for a terminal to measure a neighboring cell in a long term evolution system comprises the following steps:
(1) a terminal receives a measurement control message issued by a network side;
(2) and the terminal measures the adjacent cell according to the measurement mode specified in the measurement control message.
The step (2) is as follows: when the measurement mode of receiving the network side indication is the same-frequency measurement, the terminal measures the same-layer adjacent cells as the same-frequency measurement, and if the terminal can receive the common channel message of the different-layer adjacent cells without adjusting the frequency of the local terminal receiver, the terminal also measures the same-frequency of the different-layer adjacent cells.
The step (2) further comprises the following steps: and when the measurement mode indicated by the network side is pilot frequency measurement, the terminal performs pilot frequency measurement on the neighbor cells of the different layer.
The step (2) is as follows: if receiving the indication of the network side to perform the same-frequency measurement and the same-layer adjacent cell information, the terminal performs the same-frequency measurement on the same-layer adjacent cell; and if the pilot frequency measurement and the information of the neighbor cells of the different layer are received, the terminal performs the pilot frequency measurement on the neighbor cells of the different layer.
The step (2) is as follows: and receiving pilot frequency measurement and same layer/different layer adjacent cell information indicated by a network side, performing pilot frequency measurement on the different layer adjacent cell, and if the frequency of a local terminal receiver needs to be adjusted to receive the common channel message of the same layer adjacent cell, also performing pilot frequency measurement on the same layer adjacent cell.
The step (2) further comprises the following steps: receiving the same frequency measurement and the same layer/different layer adjacent cell information indicated by the network side, performing the same frequency measurement on the same layer adjacent cell, and receiving the common channel message of the different layer adjacent cell without adjusting the frequency of the local terminal receiver, and performing the same frequency measurement on the different layer adjacent cell. 7. The method of claim 5, wherein step (2) further comprises: and receiving the same-frequency measurement indicated by the network side and the information of the adjacent cells on the same layer, and performing the same-frequency measurement on the adjacent cells on the same layer.
Judging whether the terminal needs to adjust the frequency of the local terminal receiver to receive the public channel message of the neighbor cells of different layers by judging whether the frequency band of the neighbor cells is in the range of the frequency band of the terminal, if the frequency band of the neighbor cells is in the range of the frequency band of the terminal, the terminal can receive the public channel message of the neighbor cells of different layers without adjusting the frequency of the local terminal receiver.
The method also comprises the following steps: and the terminal carries out pilot frequency measurement in a measurement gap, wherein the measurement gap is indicated in the measurement control message issued by the network side or indicated in the scheduling information issued by the network side for allocating time domain and/or frequency domain resources to the terminal.
The method also comprises the following steps: and the terminal performs pilot frequency measurement in the predefined pilot frequency measurement time or performs the pilot frequency measurement when the current idle time domain/time resource of the terminal is larger than the condition which can be met by the minimum pilot frequency measurement.
The method also comprises the following steps before the step (2): the terminal determines whether the neighbor cell is a neighbor cell of the same layer as a serving cell of the terminal or a neighbor cell of a different layer.
A terminal in a long term evolution system, comprising:
a first neighbor cell measurer: and carrying out co-frequency measurement or inter-frequency measurement on the adjacent cells according to the specified measurement mode in the measurement control message issued by the network side.
The first neighbor cell measurer further comprises: a first common frequency measurement unit: when the measurement mode 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, and if the terminal can receive the common channel message of the adjacent cells on the different layer without adjusting the frequency of the local terminal receiver, the terminal also performs the same-frequency measurement on the adjacent cells on the different layer; a first pilot frequency measurement unit: and when the measurement mode indicated by the network side is pilot frequency measurement, performing pilot frequency measurement on the neighbor cells of the different layer.
The first neighbor cell measurer further includes: a second same-frequency measuring unit: if receiving the indication of the network side to perform the same-frequency measurement and the same-layer adjacent cell information, the terminal performs the same-frequency measurement on the same-layer adjacent cell; a second pilot frequency measurement unit: and if the pilot frequency measurement and the information of the neighbor cells of the different layer are received, the terminal performs the pilot frequency measurement on the neighbor cells of the different layer.
The first neighbor cell measurer further includes: a third same-frequency measuring unit: receiving the same-frequency measurement and the same-layer/different-layer adjacent cell information indicated by a network side, performing the same-frequency measurement on the same-layer adjacent cell, receiving the common channel message of the different-layer adjacent cell without adjusting the frequency of a local terminal receiver, and performing the same-frequency measurement on the different-layer adjacent cell; a third differential frequency measurement unit: and receiving pilot frequency measurement and same layer/different layer adjacent cell information indicated by a network side, performing pilot frequency measurement on the different layer adjacent cell, and if the frequency of a local terminal receiver needs to be adjusted to receive the common channel message of the same layer adjacent cell, also performing pilot frequency measurement on the same layer adjacent cell.
The first neighbor cell measurer further includes: a fourth same-frequency measuring unit: receiving the same-frequency measurement indicated by the network side and the information of the same-layer adjacent cells, and performing the same-frequency measurement on the same-layer adjacent cells; a fourth pilot frequency measurement unit: and receiving pilot frequency measurement and same layer/different layer adjacent cell information indicated by a network side, performing pilot frequency measurement on the different layer adjacent cell, and if the frequency of a local terminal receiver needs to be adjusted to receive a common channel message of the same layer adjacent cell, also performing pilot frequency measurement on the same layer adjacent cell.
A method for a terminal to measure a neighboring cell in a long term evolution system includes: (1) a terminal receives a measurement control message issued by a network side; (2) and the terminal carries out co-frequency/inter-frequency measurement on the adjacent cells according to the self-determined measurement mode of the adjacent cells.
The method also comprises the following steps before the step (2): the terminal determines whether the neighbor cell is a neighbor cell of the same layer as a serving cell of the terminal or a neighbor cell of a different layer.
The step (2) is as follows: the measurement of the terminal to the adjacent cell in the same layer is the same frequency measurement, if the terminal can receive the common channel message of the adjacent cell in the different layer without adjusting the frequency of the receiver of the terminal, the terminal also performs the same frequency measurement to the adjacent cell in the different layer, otherwise, performs the different frequency measurement to the adjacent cell in the different layer.
The step (2) is as follows: and the terminal measures the adjacent cells on the same layer as the same-frequency measurement and measures the different-frequency measurement of the adjacent cells on the different layer.
The step (2) is as follows: if the terminal needs to adjust the frequency of the local terminal receiver to receive the common channel message of the adjacent cells of the same layer, the terminal performs different-frequency measurement on the adjacent cells of the same layer, otherwise performs same-frequency measurement on the adjacent cells of the same layer.
The step (2) further comprises the following steps: and the terminal performs pilot frequency measurement on the neighbor cells of the different layer.
The step (2) further comprises the following steps: and if the frequency of the receiver of the terminal does not need to be adjusted to receive the common channel message of the neighbor cells of the different layer, the terminal performs the same-frequency measurement on the neighbor cells of the different layer, otherwise, performs the different-frequency measurement on the neighbor cells of the different layer.
And the terminal carries out pilot frequency measurement in a measurement gap, wherein the measurement gap is indicated in the measurement control message issued by the network side or indicated in the scheduling information issued by the network side for allocating time domain and/or frequency domain resources to the terminal.
Further comprising: the terminal carries out pilot frequency measurement in predefined pilot frequency measurement time; or when the current idle resource of the terminal is larger than the condition which can be met by the minimum pilot frequency measurement, the terminal carries out pilot frequency measurement.
Judging whether the terminal needs to adjust the frequency of the local terminal receiver to receive the public channel message of the neighbor cells of different layers by judging whether the frequency band of the neighbor cells is in the range of the frequency band of the terminal, if the frequency band of the neighbor cells is in the range of the frequency band of the terminal, the terminal can receive the public channel message of the neighbor cells of different layers without adjusting the frequency of the local terminal receiver.
A terminal in a long term evolution system, comprising: a second neighbor cell measurer: the measurement of the same-layer adjacent cell is the same-frequency measurement, if the common channel message of the different-layer adjacent cell can be received without adjusting the frequency of the local receiver, the same-frequency measurement is also carried out on the different-layer adjacent cell, otherwise, the different-frequency measurement is carried out on the different-layer adjacent cell, or the measurement of the same-layer adjacent cell is the same-frequency measurement, the different-frequency measurement is carried out on the different-layer adjacent cell, or the different-frequency measurement is carried out on the same-layer adjacent cell when the frequency of the local receiver needs to be adjusted to receive the common channel message of the same-layer adjacent cell, otherwise, the same-frequency measurement is carried out on the same-layer adjacent cell, and the different-frequency measurement is carried out on the different-layer adjacent cell, or the different-frequency measurement is carried out on the same-layer adjacent cell when the frequency of the local receiver needs to be adjusted to receive the common channel message of the same-layer adjacent cell, otherwise, the same-frequency measurement is carried out on the same, and if the frequency of the receiver of the local end does not need to be adjusted to receive the common channel message of the neighbor cells of the different layer, performing same-frequency measurement on the neighbor cells of the different layer, otherwise, performing different-frequency measurement on the neighbor cells of the different layer.
The method also comprises the following steps: a neighbor cell type decision device: when the type of the neighbor cell to be measured is not included in the received measurement control message, the terminal determines in advance whether the neighbor cell is a same-layer neighbor cell or a different-layer neighbor cell belonging to a serving cell of the terminal.
A method for a terminal to measure a neighboring cell in a long term evolution system includes: a terminal receives a measurement control message which is sent by a network side and contains information of an adjacent cell; if the terminal does not need to adjust the frequency of the local terminal receiver to receive the adjacent cell common channel message, the terminal performs the same frequency measurement on the adjacent cell, otherwise, the terminal performs the different frequency measurement on the adjacent cell.
Compared with the prior art, the invention provides various schemes for the terminal receiving adjacent cells in the LTE system, and solves the problem that no relevant measurement method exists in the LTE. Moreover, by the measuring method of the invention, the situation that only part of the adjacent cell information is received or the adjacent cell information cannot be received can not occur, and the accuracy of receiving is improved.
Drawings
Fig. 1 is a schematic structural view of an LTE broadband wireless mobile communication system;
FIG. 2 is a flowchart of a method for a terminal to perform neighbor cell measurement in an LTE system of the present invention;
FIG. 3 is a diagram of a first embodiment of the present invention;
FIG. 4 is a diagram of a second embodiment of the present invention;
FIG. 5 is a diagram of a third embodiment of the present invention;
FIG. 6 is a diagram of a fourth embodiment of the present invention;
FIG. 7 is a fifth embodiment of the present invention;
FIG. 8 is a diagram of a sixth embodiment of the present invention;
fig. 9 is a schematic block diagram of a terminal structure for implementing neighbor cell measurement in an LTE system according to the present invention;
fig. 10 is a flowchart of a second method for a terminal to perform neighbor cell measurement in an LTE system according to the present invention;
fig. 11 is a flowchart of a third method for performing neighbor cell measurement by a terminal in an LTE system according to the present invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
The method is based on an LTE broadband wireless mobile communication system as shown in fig. 1. In the figure, an Access Service Gateway (ASGW) represents an Access Service Gateway entity of a broadband wireless mobile communication system, and is used for completing functions such as Access of users in the system and routing and forwarding of signaling and services in the system. The eNodeB represents a new type of Node B logical Node, which is used to complete the air interface physical layer and part of the higher layer protocols, and is the Node that the mobile terminal accesses for the first time when accessing the system. The RRMServer (radio resource management server) in the figure is an optional functional entity, which is mainly used to assist in completing the radio resource management procedure between cells in the broadband wireless mobile communication system, and it may also provide a data source for the inter-cell mobility management procedure. 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 an interface between a radio access network and its upper node in the broadband wireless mobile communication system, and is used to provide a transmission link of a control plane and a user plane. The O1 interface shown in the figure is an optional interface, and when the E-UTRAN deploys the rrmserver, which is an optional functional entity, the eNodeB needs to implement the connection with the rrmserver by installing the O1 interface. Generally, the issuing of the UE message by the network side in the LTE system refers to the issuing of the message by the ASGW and the eNodeB to the UE.
Please refer to fig. 2, which is a flowchart illustrating a method for a terminal to perform neighbor cell measurement in an LTE system according to the present invention. It includes:
s110: a terminal receives a measurement control message issued by a network side;
s120: and the terminal performs the same frequency measurement or different frequency measurement on the adjacent cells according to the measurement mode specified in the measurement control message.
Each step is described in detail below.
First, S110
The network side issues a measurement control message, which may be a system message or a dedicated measurement control message, where the dedicated measurement control message refers to a measurement control message sent to the terminal by the network side when the terminal is in a connected state. The measurement control message includes the measurement mode indicated by the network side to the neighboring cell and the neighboring cell information. The measurement mode of the adjacent cell is the same frequency measurement or different frequency measurement. The neighbor cell information may include the type of the neighbor cell, i.e. the neighbor cell is the same-layer neighbor cell or a different-layer neighbor cell of the serving cell of the terminal, including neighbor cell related information, such as a neighbor cell list, information required for receiving a message of a neighbor cell common channel (such as BCH channel), and the like. When the designated measurement mode is inter-frequency measurement, the measurement control message may further include information of a measurement gap (measurement gap), which is used for the terminal to perform inter-frequency neighbor cell measurement on the designated measurement gap.
II, S120
If the neighboring cells in the received measurement control message are not distinguished, that is, the neighboring cells are not classified into the same-frequency neighboring cell or the different-frequency neighboring cell or the same-layer neighboring cell or the different-layer neighboring cell or are classified otherwise, the terminal determines whether the neighboring cells belong to the same-layer neighboring cell or the different-layer neighboring cell of the serving cell of the terminal.
And the terminal measures the adjacent cell according to the measurement mode specified in the measurement control message. The following description will be divided into four cases to respectively describe specific measurement procedures.
A: the measurement of the terminal to the adjacent cells in the same layer is the same frequency measurement, and the measurement to the adjacent cells in different layers may be the same frequency measurement or different frequency measurement.
When the measurement mode indicated by the network side is the same-frequency measurement, the terminal measures the same-layer adjacent cells as the same-frequency measurement, and if the terminal can receive the common channel message of the different-layer adjacent cells without adjusting the frequency of the local terminal receiver, the terminal also measures the same-frequency of the different-layer adjacent cells.
And when the measurement mode indicated by the network side is received is pilot frequency measurement, the terminal performs pilot frequency measurement on the neighbor cells of the different layer.
(1) The issued adjacent cells on the same layer have the same frequency and the same bandwidth as the serving cell; the different-layer neighbor cell refers to a frequency or bandwidth different from that of the serving cell;
the UE measures the adjacent cells on the same layer as the same frequency measurement; and the UE determines to perform same-frequency measurement or different-frequency measurement on the different-layer adjacent cells according to the condition of the different-layer adjacent cells. As shown in fig. 3 and 4, Cell2 is a Cell in the same layer of Cell1, and the measurement of Cell2 by UE1 and UE2 is an intra-frequency measurement. The Cell3 is a heterogeneous Cell of the Cell1, and since the frequency band of the neighboring Cell3 falls within the range of the frequency band of the UE1 (determination method one), in other words, the center frequency of the neighboring Cell3 falls within the frequency range of the UE1 (determination method two), the fact means that the UE1 can receive the Cell3 common channel (such as BCH channel) message without adjusting the local receiver frequency, and the measurement of the Cell3 by the UE1 is the same-frequency measurement. If the UE needs to adjust the frequency of the local receiver to receive the common channel message of the adjacent cell, the UE carries out different frequency measurement on the different-layer adjacent cell. The measurement of Cell3 as UE2 is an inter-frequency measurement. In fig. 3, bandwidths of the UE1 and the UE2 are 10.625MHz, and only one SCH channel is located in the middle of the transmission bandwidth, in this case of fig. 3, a first determination method or a second determination method may be used to determine whether the UE can perform co-frequency measurement on the different-layer neighbor cells. In fig. 4, the bandwidths of UE1 and UE2 are 10MHz, and when the cell transmission bandwidth is 20MHz, one cell has two SCH channels. In this case of fig. 4, a first determination method may be used to determine whether the UE can perform co-frequency measurement on the neighbor cells of different layers.
(2) The issued adjacent cell of the same layer has the same frequency with the serving cell; the different-layer neighbor cells refer to different frequencies. At this time, the measurement of the UE to the adjacent cells in the same layer is the same-frequency measurement; the measurement of the UE on the different-layer neighbor cell may be an intra-frequency measurement or an inter-frequency measurement.
Taking fig. 5 as an example, Cell2 and Cell4 are cells in the same layer of Cell1, and the measurements of Cell2 and Cell4 by UE1 and UE2 are common-frequency measurements; cell3 is a heterogeneous Cell of Cell 1. Since the frequency band of the neighboring Cell3 falls within the range of the frequency band of the UE1 (determination method one), in other words, the center frequency of the neighboring Cell3 falls within the frequency range of the UE1 (determination method two), it means that the UE1 can receive the common channel (e.g., BCH channel) message of the Cell3 without adjusting the frequency of the local receiver, and the measurement of the Cell3 by the UE1 is the same-frequency measurement. If the UE needs to adjust the frequency of the local receiver to receive the common channel message of the adjacent cell, the UE carries out different frequency measurement on the different-layer adjacent cell. The measurement of Cell3 as UE2 is an inter-frequency measurement.
To sum up, after the UE receives the message:
if the network side indicates to carry out the same-frequency measurement and issues the same-layer adjacent cell information or/and the different-layer adjacent cell information, the UE carries out the same-frequency measurement on the same-layer adjacent cells; and the UE judges whether the measurement of the neighbor cells of the different layers can be the same-frequency measurement or not according to the mode of whether the frequency of the local receiver needs to be adjusted and not receiving the neighbor cells of the different layers, and if so, the same-frequency measurement can be executed.
And if the network side indicates to carry out pilot frequency measurement and issues the information of the neighbor cells of different layers, the UE carries out pilot frequency measurement.
The terminal carries out pilot frequency measurement in the indicated measurement gap, wherein the measurement gap is indicated in the measurement control message issued by the network side or indicated in the scheduling information issued by the network side in the time domain and/or frequency domain resource allocation to the terminal.
In addition, the terminal performs inter-frequency measurement at a predefined inter-frequency measurement time. The terminal can also perform pilot frequency measurement when detecting that the current idle resource is larger than the condition met by the minimum pilot frequency measurement available. The conditions satisfied by the minimum available inter-frequency measurement include the minimum time/time domain resource required for the inter-frequency measurement, and the like.
As can be seen from the above, the timing for the terminal to perform the inter-frequency measurement may be set by the network side, may also be preset, and may also be determined according to the current specific resources of the terminal.
B. Carrying out same-frequency measurement on adjacent cells of the same layer and carrying out different-frequency measurement on adjacent cells of different layers
The same-layer neighbor cell/different-layer neighbor cell is used for carrying out the same-frequency measurement on the same-layer neighbor cell by the terminal if receiving the indication of the network side to carry out the same-frequency measurement and the same-layer neighbor cell information of the same-layer neighbor cell; and if the pilot frequency measurement and the information of the neighbor cells of the different layer are received, the terminal performs the pilot frequency measurement on the neighbor cells of the different layer.
And if the network side indicates to carry out pilot frequency measurement and issues the information of the neighbor cells of different layers, the UE carries out pilot frequency measurement.
The terminal carries out pilot frequency measurement in the indicated measurement gap, wherein the measurement gap is indicated in the measurement control message issued by the network side or indicated in the scheduling information issued by the network side in allocating time domain and/or frequency domain resources to the terminal.
In addition, the terminal performs pilot frequency measurement at a preset pilot frequency measurement time. The terminal can also perform pilot frequency measurement when detecting that the current idle resource is larger than the condition met by the minimum pilot frequency measurement available. The minimum condition for performing inter-frequency measurement includes the minimum time/time domain resource required by the inter-frequency measurement.
Taking fig. 6 as an example, Cell2 is a Cell in the same layer of Cell1, and the measurement of Cell2 by UE1 and UE2 is an intra-frequency measurement; cell3 is a heterogeneous Cell of Cell1, and UE1 and UE2 perform inter-frequency measurement on Cell 3.
C. The measurement of the UE to the adjacent cells in the same layer may be common-frequency measurement or different-frequency measurement; the measurement of the UE on the different-layer neighbor cell may be an intra-frequency measurement or an inter-frequency measurement.
The terminal receives the pilot frequency measurement and the same layer/different layer adjacent cell information indicated by the network side, the pilot frequency measurement is carried out on the different layer adjacent cell, and if the local terminal receiver frequency needs to be adjusted to receive the common channel message of the same layer adjacent cell, the pilot frequency measurement is also carried out on the same layer adjacent cell.
The terminal receives the same frequency measurement and the same layer/different layer adjacent cell information indicated by the network side, performs the same frequency measurement on the same layer adjacent cell, and can receive the common channel message of the different layer adjacent cell without adjusting the local terminal receiver frequency, and also performs the same frequency measurement on the different layer adjacent cell.
(1) The issued adjacent cells on the same layer have the same frequency and the same bandwidth as the serving cell; the different-layer neighbor cells refer to different frequencies or different bandwidths.
At this time, the measurement of the UE on the neighboring cells in the same layer may be the same-frequency measurement or the different-frequency measurement; the measurement of the UE on the different-layer neighbor cell may be an intra-frequency measurement or an inter-frequency measurement. Such as the design and scenario of fig. 7: cell2 is a co-layer Cell of Cell1, the measurement of Cell2 by UE2 is an intra-frequency measurement, and the measurement of Cell2 by UE1 is an inter-frequency measurement; cell3 is a heterogeneous Cell of Cell1, and the measurement of Cell3 by UE1 is an intra-frequency measurement; the UE2 measurements on Cell3 are inter-frequency measurements.
(2) The issued adjacent cell of the same layer has the same frequency with the serving cell; the different-layer neighbor cells refer to different frequencies.
At this time, the measurement of the UE on the neighboring cells in the same layer may be the same-frequency measurement or the different-frequency measurement; the measurement of the UE on the different-layer neighbor cell may be an intra-frequency measurement or an inter-frequency measurement. The same can be explained with the scenario shown in fig. 7.
That is, after the UE receives the message:
if the network side indicates to perform the same-frequency measurement and sends the information of the same-layer neighbor cell or/and the information of the different-layer neighbor cell, the UE judges whether the measurement of the cell can be performed with the same-frequency measurement or not by judging whether the UE needs to adjust the frequency of the local terminal receiver to receive the common channel information of the neighbor cell or not for the information of the same-layer neighbor cell or/and the information of the different-layer neighbor cell, and if the frequency of the local terminal receiver does not need to be adjusted to receive the common channel information of the neighbor cell, the same-frequency measurement is performed;
and if the network side indicates to carry out the pilot frequency measurement and sends the information of the adjacent cells of the same layer or/and the information of the adjacent cells of the different layer, the UE carries out the pilot frequency measurement on the adjacent cells of the same layer or/and the adjacent cells of the different layer.
The terminal performs pilot frequency measurement in an indicated measurement gap (measurement gap), wherein the measurement gap is indicated in the measurement control message issued by the network side or indicated in the scheduling information issued by the network side for allocating time domain and/or frequency domain resources to the terminal.
In addition, the terminal performs pilot frequency measurement at a preset pilot frequency measurement time. The terminal can also perform pilot frequency measurement when detecting that the current idle resource is larger than the condition met by the minimum pilot frequency measurement available. The minimum condition for performing inter-frequency measurement includes the minimum time/time domain resource required by the inter-frequency measurement.
D. The measurement of the UE to the adjacent cells in the same layer may be common-frequency measurement or different-frequency measurement; the measurement of the UE to the neighbor cell of the different layer is the pilot frequency measurement.
Whether the same layer/different layer adjacent cells adopt the first definition method or the second definition method, the terminal receives the different frequency measurement and the same layer/different layer adjacent cell information indicated by the network side, the different frequency measurement is carried out on the different layer adjacent cells, and if the frequency of the local terminal receiver needs to be adjusted to receive the common channel information of the same layer adjacent cells, the different frequency measurement is also carried out on the same layer adjacent cells. And the terminal receives the same-frequency measurement indicated by the network side and the same-layer adjacent cell information and performs the same-frequency measurement on the same-layer adjacent cells.
Such as the design and scenario of fig. 8: the cells 2 and 4 are cells in the same layer of the Cell1, and because the UEs 1 and 2 cannot all receive the BCH channel information of the cells 2 and 4, the receiver frequency of the terminal needs to be adjusted to all receive the BCH channel information of the cells 2 and 4. Therefore, the measurements of the Cell2 and the Cell4 by the UE1 and the UE2 are pilot frequency measurements, and the measurement of the Cell2 by the UE3 is intra-frequency measurement; cell3 is a heterogeneous Cell of Cell1, and Cell3 measurements by UE1, UE2 and UE3 are pilot frequency measurements.
After receiving the measurement control message, the UE: if the network side indicates to perform the same-frequency measurement and sends the same-layer neighbor cell information, the UE needs to judge whether the same-frequency measurement can be performed on the measurement of the cell or not for the same-layer neighbor cell information, and if the same-frequency measurement can be performed, the same-frequency measurement is performed; and if the network side indicates to carry out the pilot frequency measurement and issues the information of the neighbor cells of the different layers, the UE measures the neighbor cells of the different layers by the pilot frequency measurement.
The terminal carries out pilot frequency measurement in the indicated measurement gap, wherein the measurement gap is indicated in the measurement control message issued by the network side or indicated in the scheduling information issued by the network side in allocating time domain and/or frequency domain resources to the terminal.
In addition, the terminal performs pilot frequency measurement at a preset pilot frequency measurement time. The terminal can also perform pilot frequency measurement when detecting that the current idle resource is larger than the condition met by the minimum pilot frequency measurement available. The minimum condition for performing inter-frequency measurement includes the minimum time/time domain resource 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 according to the present invention. It includes:
first neighbor cell measurer 11: and performing co-frequency measurement or inter-frequency measurement on the adjacent cell according to a measurement mode specified in a measurement control message issued by a network side.
The neighbor cell measurer further includes:
a first common frequency measurement unit: when the measurement mode 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, and if the terminal can receive the common channel message of the adjacent cells on the different layer without adjusting the frequency of the local terminal receiver, the terminal also performs the same-frequency measurement on the adjacent cells on the different layer;
a first pilot frequency measurement unit: and when the measurement mode indicated by the network side is pilot frequency measurement, performing pilot frequency measurement on the neighbor cells of the different layer.
The neighbor cell measurer may further include:
a second same-frequency measuring unit: if receiving the indication of the network side to perform the same-frequency measurement and the same-layer adjacent cell information, the terminal performs the same-frequency measurement on the same-layer adjacent cell;
a second pilot frequency measurement unit: and if the pilot frequency measurement and the pilot frequency adjacent cell information are received, the terminal performs the pilot frequency measurement on the pilot frequency adjacent cell.
The neighbor cell measurer may further include:
a third same-frequency measuring unit: receiving the same-frequency measurement and the same-layer/different-layer adjacent cell information indicated by a network side, performing the same-frequency measurement on the same-layer adjacent cell, receiving the common channel message of the different-layer adjacent cell without adjusting the frequency of a local terminal receiver, and performing the same-frequency measurement on the different-layer adjacent cell;
a third differential frequency measurement unit: and receiving pilot frequency measurement and same layer/different layer adjacent cell information indicated by a network side, performing pilot frequency measurement on the different layer adjacent cell, and if the frequency of a local terminal receiver needs to be adjusted to receive a common channel message of the same layer adjacent cell, also performing pilot frequency measurement on the same layer adjacent cell.
The neighbor cell measurer may further include:
a fourth same-frequency measuring unit: receiving the same-frequency measurement indicated by the network side and the information of the same-layer adjacent cells, and performing the same-frequency measurement on the same-layer adjacent cells;
a fourth pilot frequency measurement unit: and receiving pilot frequency measurement and same layer/different layer adjacent cell information indicated by a network side, performing pilot frequency measurement on the different layer adjacent cell, and if the frequency of a local terminal receiver needs to be adjusted to receive a common channel message of the same layer adjacent cell, also performing pilot frequency measurement on the same layer adjacent cell.
In the method, the terminal performs the co-frequency measurement or the inter-frequency measurement on the neighboring cell according to the measurement mode specified by the network side. In addition, the terminal can also decide whether to adopt the same-frequency measurement or different-frequency measurement for the adjacent cells.
Please refer to fig. 10, which is a flowchart illustrating another method for performing neighbor cell measurement by a terminal in a long term evolution system according to the present invention. It includes:
s210: the terminal receives the measurement control message issued by the network side. The measurement control message may include neighbor cell information. However, the measurement control message may not include the measurement method specified for the neighboring cell.
S220: and the terminal measures the adjacent cell according to the self-determined measuring mode of the adjacent cell.
Step S210
The measurement control message of the network side does not include the measurement mode of the adjacent cell, and at the moment, the terminal needs to determine the measurement mode of the adjacent cell to carry out the measurement of the adjacent cell. In addition, the measurement control message sent by the network side may include the type of the neighboring cell, or may not include the type of the neighboring cell. When the measurement control message does not include the type of the neighbor cell, the terminal may determine the type of the neighbor cell to be measured by itself, that is, if the neighbor cells in the received measurement control message are not distinguished, that is, the neighbor cells are not divided into the same-frequency neighbor cell or the different-frequency neighbor cell or the same-layer neighbor cell or the different-layer neighbor cell or are classified otherwise, the terminal determines whether the neighbor cell belongs to the same-layer neighbor cell or the different-layer neighbor cell of the serving cell of the terminal. For example, when the neighboring cell information in the measurement control message includes a frequency band in which the neighboring cell is located, the terminal may compare the frequency band with a frequency band in which a serving cell of the terminal is located, or after comparing a center frequency of the neighboring cell with a center frequency of the serving cell of the terminal, determine whether the neighboring cell belongs to a same-layer neighboring cell or a different-layer neighboring cell of the serving cell.
Step S220
A: the measurement of the terminal to the adjacent cells on the same layer is the same frequency measurement, if the terminal can receive the common channel message of the adjacent cells on the different layer without adjusting the frequency of the receiver of the terminal, the terminal also performs the same frequency measurement to the adjacent cells on the different layer, otherwise, performs the different frequency measurement.
The terminal carries out pilot frequency measurement in the indicated measurement gap, wherein the measurement gap is indicated in the measurement control message issued by the network side or indicated in the scheduling information issued by the network side in allocating time domain and/or frequency domain resources to the terminal.
In addition, the terminal performs pilot frequency measurement at a preset pilot frequency measurement time. The terminal can also perform pilot frequency measurement when detecting that the current idle resource is larger than the condition met by the minimum pilot frequency measurement available. The minimum condition for performing inter-frequency measurement includes the minimum time/time domain resource required by the inter-frequency measurement.
B. And the terminal measures the adjacent cells on the same layer as the same-frequency measurement and measures the different-frequency measurement of the adjacent cells on the different layer.
The terminal carries out pilot frequency measurement in the indicated measurement gap, wherein the measurement gap is indicated in the measurement control message issued by the network side or indicated in the scheduling information issued by the network side in allocating time domain and/or frequency domain resources to the terminal.
In addition, the terminal performs pilot frequency measurement at a preset pilot frequency measurement time. The terminal can also perform pilot frequency measurement when detecting that the current idle resource is larger than the condition met by the minimum pilot frequency measurement available. The minimum condition for performing inter-frequency measurement includes the minimum time/time domain resource required by the inter-frequency measurement.
C. If the terminal needs to adjust the frequency of the local terminal receiver to receive the common channel message of the adjacent cells of the same layer, the terminal performs different-frequency measurement on the adjacent cells of the same layer, otherwise performs same-frequency measurement on the adjacent cells of the same layer. The terminal can perform pilot frequency measurement on all the different-layer neighbor cells.
D: if the terminal needs to adjust the frequency of the local terminal receiver to receive the common channel message of the adjacent cells of the same layer, the terminal performs different-frequency measurement on the adjacent cells of the same layer, otherwise performs same-frequency measurement on the adjacent cells of the same layer. The terminal can also perform co-frequency/inter-frequency measurement on the neighbor cells of different layers. For example, if the local receiver frequency does not need to be adjusted to receive the common channel message of the neighbor cells of different layers, the terminal performs the same-frequency measurement on the neighbor cells of different layers, otherwise performs the different-frequency measurement on the neighbor cells of different layers.
The terminal carries out pilot frequency measurement in the indicated measurement gap, wherein the measurement gap is indicated in the measurement control message issued by the network side or indicated in the scheduling information issued by the network side in allocating time domain and/or frequency domain resources to the terminal.
In addition, the terminal performs pilot frequency measurement at a preset pilot frequency measurement time. The terminal can also perform pilot frequency measurement when detecting that the current idle resource is larger than the condition met by the minimum pilot frequency measurement available. The minimum condition for performing inter-frequency measurement includes the minimum time/time domain resource required by the inter-frequency measurement.
In the method, the terminal judges whether the terminal needs to adjust the frequency of the local terminal receiver to receive the public channel message of the neighbor cell of the different layer by judging whether the frequency band of the neighbor cell is in the range of the frequency band of the terminal, and if the frequency band of the neighbor cell is in the range of the frequency band of the terminal, the terminal can receive the public channel message of the neighbor cell of the different layer without adjusting the frequency of the local terminal receiver.
A terminal in a long term evolution system, comprising:
a second neighbor cell measurer: the measurement of the adjacent cells on the same layer is the same frequency measurement, if the local receiver frequency is not adjusted, the common channel message of the adjacent cells on different layers can be received, the same frequency measurement is also carried out on the adjacent cells on different layers, otherwise, the different frequency measurement is carried out on the adjacent cells on different layers.
The invention provides a terminal in a long-term evolution system aiming at a method for a terminal to determine a measurement mode of an adjacent cell by self, which comprises the following steps:
a second neighbor cell measurer: and measuring the adjacent cells according to the measurement types of the adjacent cells which need to be measured by self:
the measurement of the same-layer adjacent cell is the same-frequency measurement, if the local receiver frequency is not adjusted, the common-channel message of the different-layer adjacent cell can be received, the same-frequency measurement is also carried out on the different-layer adjacent cell, otherwise, the different-frequency measurement is carried out, or
The measurement of the adjacent cells of the same layer is the same-frequency measurement, and the different-frequency measurement is carried out on the adjacent cells of the different layer, or
If the frequency of the local terminal receiver needs to be adjusted to receive the common channel message of the adjacent cells of the same layer, performing different-frequency measurement on the adjacent cells of the same layer, otherwise performing the same-frequency measurement on the adjacent cells of the same layer and performing the different-frequency measurement on the adjacent cells of the different layer, or if the frequency of the local terminal receiver needs to be adjusted to receive the common channel message of the adjacent cells of the same layer, performing the different-frequency measurement on the adjacent cells of the same layer, otherwise performing the same-frequency measurement on the adjacent cells of the same layer and performing the different-frequency measurement on the adjacent cells of the different layer, if the frequency of the local terminal receiver does not need to be adjusted to receive the common channel message of the adjacent cells of the different layer, performing the same-frequency measurement on the adjacent cells of the different layer, and otherwise performing the different-frequency measurement on.
Please refer to fig. 11, which is a third method for performing neighbor cell measurement by a terminal in a long term evolution system according to the present invention. It includes:
s510: a terminal receives a measurement control message which is sent by a network side and contains information of an adjacent cell;
s520: 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 (S530), otherwise, the terminal performs the different frequency measurement on the adjacent cell (S530).
In the method, in the measurement process of the adjacent cell, the terminal does not need to judge whether the adjacent cell to be measured is the adjacent cell of the same layer or the adjacent cell of a different layer. The terminal only needs to judge whether the frequency of the local terminal receiver needs to be adjusted to receive the adjacent cell common channel message, if so, the different frequency measurement is carried out, otherwise, the same frequency measurement is carried out. The method is simple and convenient in design, and the terminal in the LTE system is utilized to receive the information of the adjacent cell.
The invention provides various schemes for receiving adjacent cells by a terminal in an LTE system, and solves the problem that no related measurement method exists in LTE. Moreover, by the measuring method of the invention, the situation that only part of the adjacent cell information is received or the adjacent cell information cannot be received can not occur, and the accuracy of receiving is improved.
The above disclosure is only for the specific embodiments of the present invention, but the present invention is not limited thereto, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.
Claims (26)
1. A method for a terminal to measure a neighboring cell in a long term evolution system is characterized by comprising the following steps:
(1) a terminal receives a measurement control message issued by a network side;
(2) the terminal measures the adjacent cell according to the measurement mode appointed in the measurement control message; when the measurement mode is pilot frequency measurement, the timing of the terminal for pilot frequency measurement is set by the network side, or is preset, or is determined according to the current concrete resources of the terminal, wherein if the pilot frequency measurement and the information of the adjacent cells of the same layer and/or different layers indicated by the network side are received, the pilot frequency measurement is carried out on the adjacent cells of the different layer, and if the frequency of the local terminal receiver needs to be adjusted to receive the common channel information of the adjacent cells of the same layer, the pilot frequency measurement is also carried out on the adjacent cells of the same layer.
2. The method of claim 1, wherein step (2) is: when the measurement mode of receiving the network side indication is the same-frequency measurement, the terminal measures the same-layer adjacent cells as the same-frequency measurement, and if the terminal can receive the common channel message of the different-layer adjacent cells without adjusting the frequency of the local terminal receiver, the terminal also measures the same-frequency of the different-layer adjacent cells.
3. The method of claim 1, wherein step (2) further comprises: and when the measurement mode indicated by the network side is pilot frequency measurement, the terminal performs pilot frequency measurement on the neighbor cells of the different layer.
4. The method of claim 1, wherein step (2) is: if receiving the indication of the network side to perform the same-frequency measurement and the same-layer adjacent cell information, the terminal performs the same-frequency measurement on the same-layer adjacent cell; and if the pilot frequency measurement and the information of the neighbor cells of the different layer are received, the terminal performs the pilot frequency measurement on the neighbor cells of the different layer.
5. The method of claim 1, wherein step (2) further comprises: receiving the same frequency measurement and the same layer and/or different layer adjacent cell information indicated by the network side, performing the same frequency measurement on the same layer adjacent cell, and receiving the common channel message of the different layer adjacent cell without adjusting the frequency of the local terminal receiver, and performing the same frequency measurement on the different layer adjacent cell.
6. The method of claim 1, wherein step (2) further comprises: and receiving the same-frequency measurement indicated by the network side and the information of the adjacent cells on the same layer, and performing the same-frequency measurement on the adjacent cells on the same layer.
7. The method according to any one of claims 2, 4, and 5, wherein it is determined whether the terminal needs to adjust the frequency of the local receiver to receive the message of the public channel of the neighbor cell of the different layer by determining whether the frequency band of the neighbor cell is within the range of the frequency band of the terminal, and if the frequency band of the neighbor cell is within the range of the frequency band of the terminal, the terminal can receive the message of the public channel of the neighbor cell of the different layer without adjusting the frequency of the local receiver.
8. The method according to any of the claims 3 to 5,
and the terminal carries out pilot frequency measurement in a measurement gap, wherein the measurement gap is indicated in the measurement control message issued by the network side or indicated in the scheduling information issued by the network side for allocating time domain and/or frequency domain resources to the terminal.
9. A method according to any one of claims 3 to 5, characterized in that the terminal performs inter-frequency measurements at predefined inter-frequency measurement times, or
And when the current idle time domain and/or idle time resource of the terminal is larger than the condition which can be met by the minimum pilot frequency measurement, the terminal performs the pilot frequency measurement.
10. The method of claim 1, wherein step (2) is preceded by: the terminal determines whether the neighbor cell is a neighbor cell of the same layer as a serving cell of the terminal or a neighbor cell of a different layer.
11. A terminal in a long term evolution system, comprising:
a first neighbor cell measurer: performing common-frequency measurement or different-frequency measurement on the adjacent cells according to a measurement mode specified in a measurement control message issued by a network side; when the measurement mode is inter-frequency measurement, the time for inter-frequency measurement is set by the network side, or is preset, or is determined according to the current specific resources of the terminal, and the first neighbor cell measurer includes:
a third same-frequency measuring unit: receiving the same-frequency measurement and the same-layer and/or different-layer adjacent cell information indicated by a network side, performing the same-frequency measurement on the same-layer adjacent cell, receiving the common channel message of the different-layer adjacent cell without adjusting the frequency of a local terminal receiver, and performing the same-frequency measurement on the different-layer adjacent cell;
a third differential frequency measurement unit: and if the frequency of a local terminal receiver needs to be adjusted to receive the common channel message of the adjacent cells of the same layer, the adjacent cells of the same layer are also subjected to different-frequency measurement.
12. The terminal of claim 11, wherein the first neighbor cell measurer further comprises:
a first common frequency measurement unit: when the measurement mode 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, and if the terminal can receive the common channel message of the adjacent cells on the different layer without adjusting the frequency of the local terminal receiver, the terminal also performs the same-frequency measurement on the adjacent cells on the different layer;
a first pilot frequency measurement unit: and when the measurement mode indicated by the network side is pilot frequency measurement, performing pilot frequency measurement on the neighbor cells of the different layer.
13. The terminal of claim 11, wherein the first neighbor cell measurer further comprises:
a second same-frequency measuring unit: if receiving the indication of the network side to perform the same-frequency measurement and the same-layer adjacent cell information, the terminal performs the same-frequency measurement on the same-layer adjacent cell;
a second pilot frequency measurement unit: and if the pilot frequency measurement and the information of the neighbor cells of the different layer are received, the terminal performs the pilot frequency measurement on the neighbor cells of the different layer.
14. The terminal of claim 11, wherein the first neighbor cell measurer further comprises:
a fourth same-frequency measuring unit: receiving the same-frequency measurement indicated by the network side and the information of the same-layer adjacent cells, and performing the same-frequency measurement on the same-layer adjacent cells;
a fourth pilot frequency measurement unit: and receiving pilot frequency measurement and information of adjacent cells of the same layer and/or different layers indicated by a network side, performing pilot frequency measurement on the adjacent cells of the different layers, and if the frequency of a local terminal receiver needs to be adjusted to receive a common channel message of the adjacent cells of the same layer, also performing pilot frequency measurement on the adjacent cells of the same layer.
15. A method for a terminal to measure a neighboring cell in a long term evolution system is characterized by comprising the following steps:
(1) a terminal receives a measurement control message issued by a network side;
(2) the terminal measures the adjacent cell according to the self-determined measuring mode of the adjacent cell; when the measurement mode is pilot frequency measurement, the timing of pilot frequency measurement by the terminal is set by the network side, or preset, or determined according to the current specific resources of the terminal, wherein if the terminal needs to adjust the frequency of the local terminal receiver to receive the common channel message of the adjacent cells in the same layer, the terminal performs pilot frequency measurement on the adjacent cells in the same layer, otherwise performs same-frequency measurement on the adjacent cells in the same layer.
16. The method of claim 15, wherein step (2) is preceded by: the terminal determines whether the neighbor cell is a neighbor cell of the same layer as a serving cell of the terminal or a neighbor cell of a different layer.
17. The method of claim 15 or 16, wherein step (2) is:
the measurement of the terminal to the adjacent cell in the same layer is the same frequency measurement, if the terminal can receive the common channel message of the adjacent cell in the different layer without adjusting the frequency of the receiver of the terminal, the terminal also performs the same frequency measurement to the adjacent cell in the different layer, otherwise, performs the different frequency measurement to the adjacent cell in the different layer.
18. The method of claim 16, wherein step (2) is:
and the terminal measures the adjacent cells on the same layer as the same-frequency measurement and measures the different-frequency measurement of the adjacent cells on the different layer.
19. The method of claim 18, wherein step (2) further comprises: and the terminal performs pilot frequency measurement on the neighbor cells of the different layer.
20. The method of claim 18, wherein step (2) further comprises: and if the frequency of the receiver of the terminal does not need to be adjusted to receive the common channel message of the neighbor cells of the different layer, the terminal performs the same-frequency measurement on the neighbor cells of the different layer, otherwise, performs the different-frequency measurement on the neighbor cells of the different layer.
21. The method of claim 15, wherein the terminal performs inter-frequency measurement in a measurement gap, and the measurement gap is indicated in the measurement control message issued by the network side or indicated in the scheduling information issued by the network side allocating time domain and/or frequency domain resources to the terminal.
22. The method of claim 15, wherein the terminal performs inter-frequency measurement at a predefined inter-frequency measurement time; or,
and when the current idle resource of the terminal is larger than the condition which can be met by the minimum pilot frequency measurement, the terminal performs the pilot frequency measurement.
23. The method of claim 15,
judging whether the terminal needs to adjust the frequency of the local terminal receiver to receive the public channel message of the neighbor cells of different layers by judging whether the frequency band of the neighbor cells is in the range of the frequency band of the terminal, if the frequency band of the neighbor cells is in the range of the frequency band of the terminal, the terminal can receive the public channel message of the neighbor cells of different layers without adjusting the frequency of the local terminal receiver.
24. A terminal in a long term evolution system, comprising:
a second neighbor cell measurer: the measurement of the same-layer adjacent cell is the same-frequency measurement, if the local receiver frequency is not adjusted, the common-channel message of the different-layer adjacent cell can be received, the same-frequency measurement is also carried out on the different-layer adjacent cell, otherwise, the different-frequency measurement is carried out on the different-layer adjacent cell, or
The measurement of the adjacent cells of the same layer is the same-frequency measurement, and the different-frequency measurement is carried out on the adjacent cells of different layers, or
If the local terminal receiver frequency needs to be adjusted to receive the common channel message of the adjacent cells of the same layer, the different frequency measurement is carried out on the adjacent cells of the same layer, otherwise, the same frequency measurement is carried out on the adjacent cells of the same layer, and the different frequency measurement is carried out on the adjacent cells of the different layer, or
The method is used for performing different frequency measurement on the same-layer neighbor cells if the frequency of a local-end receiver needs to be adjusted to receive the common channel message of the same-layer neighbor cells, otherwise performing the same frequency measurement on the same-layer neighbor cells and performing the different frequency measurement on the different-layer neighbor cells, performing the same frequency measurement on the different-layer neighbor cells if the frequency of the local-end receiver does not need to be adjusted to receive the common channel message of the different-layer neighbor cells, and otherwise performing the different frequency measurement on the different-layer neighbor cells.
25. The terminal of claim 24, further comprising:
a neighbor cell type decision device: when the type of the neighbor cell to be measured is not included in the received measurement control message, the terminal determines in advance whether the neighbor cell is a same-layer neighbor cell or a different-layer neighbor cell belonging to a serving cell of the terminal.
26. A method for a terminal to measure a neighboring cell in a long term evolution system is characterized by comprising the following steps:
a terminal receives a measurement control message which is sent by a network side and contains information of an adjacent cell;
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 the different-frequency measurement on the adjacent cell; when the measurement mode is pilot frequency measurement, the timing of the terminal for pilot frequency measurement is set by the network side, or preset, or determined according to the current specific resources of the terminal, wherein if the pilot frequency measurement and the information of the same-layer and/or different-layer neighbor cells indicated by the network side are received, the pilot frequency measurement is performed on the different-layer neighbor cells, and if the frequency of the local-end receiver needs to be adjusted to receive the common channel message of the same-layer neighbor cells, the pilot frequency measurement is also performed on the same-layer neighbor cells.
Priority Applications (2)
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| CN200610111215A CN101127998B (en) | 2006-08-15 | 2006-08-15 | Method and terminal for adjacent cell measurement of terminal in long evolving system |
| PCT/CN2007/070480 WO2008019629A1 (en) | 2006-08-15 | 2007-08-15 | Method for a terminal measuring neighboring cells and ue thereof |
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| CN200610111215A CN101127998B (en) | 2006-08-15 | 2006-08-15 | Method and terminal for adjacent cell measurement of terminal in long evolving system |
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| CN101127998B true CN101127998B (en) | 2012-10-03 |
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| GB2458447B (en) * | 2008-03-12 | 2010-03-10 | I P Access Ltd | Method and apparatus for obtaining neighbouring cell attributes |
| CN101553002B (en) * | 2008-03-31 | 2011-12-07 | 华为技术有限公司 | Method, terminal and system for issuing and receiving adjacent district information |
| CN101938774B (en) * | 2009-07-02 | 2014-06-11 | 中兴通讯股份有限公司南京分公司 | Methods for measurement and reporting in carrier aggregation |
| CN102271361B (en) * | 2010-06-01 | 2014-03-12 | 中兴通讯股份有限公司 | Correct issuing method and apparatus for measurement configuration during processes of switching between pilot frequencies and reconstruction of RRC connection of pilot frequencies |
| CN102958079B (en) * | 2011-08-19 | 2017-04-26 | 华为技术有限公司 | cell measurement method, information processing method, terminal, base station and network system |
| AU2014415952B2 (en) * | 2014-12-30 | 2018-09-06 | Huawei Technologies Co., Ltd. | Measurement method and device |
| CN106559776B (en) * | 2015-09-25 | 2020-09-25 | 成都鼎桥通信技术有限公司 | Method and device for updating system information in LTE (Long term evolution) system |
| CN107820263B (en) | 2016-09-13 | 2020-07-21 | 北京佰才邦技术有限公司 | Information configuration method and device |
| CN108809577B (en) * | 2017-05-05 | 2020-11-06 | 华为技术有限公司 | Information sending method, information receiving method, network equipment and terminal equipment |
| CN113891406B (en) * | 2020-07-03 | 2024-04-09 | 中国移动通信集团设计院有限公司 | Cell switching method and device in multi-frequency network |
| CN112040523B (en) * | 2020-09-08 | 2023-09-19 | Oppo广东移动通信有限公司 | Channel measurement method, device, terminal and storage medium |
| CN112040522B (en) * | 2020-09-08 | 2022-10-25 | 哲库科技(北京)有限公司 | Channel measuring method, device, terminal and storage medium |
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| CN1404339A (en) * | 2001-08-16 | 2003-03-19 | Lg电子株式会社 | Cell selecting method of mobile terminal |
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| US6917604B2 (en) * | 2001-06-20 | 2005-07-12 | Nokia Corporation | Method and apparatus for performing neighbor cell signal strength measurements for discontinuously transmitting broadcast carriers |
| CN101431776A (en) * | 2003-06-26 | 2009-05-13 | 北京三星通信技术研究有限公司 | Method for controlling inter-frequency and inter-system handover measurement by RNC |
| CN100401838C (en) * | 2004-07-31 | 2008-07-09 | 华为技术有限公司 | Switch synchronization method for asynchronous CDMA system |
| CN100375575C (en) * | 2005-01-11 | 2008-03-12 | 大唐移动通信设备有限公司 | Measurement control method for switching between mobile communication cells |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1404339A (en) * | 2001-08-16 | 2003-03-19 | Lg电子株式会社 | Cell selecting method of mobile terminal |
| CN1750700A (en) * | 2004-09-14 | 2006-03-22 | 中兴通讯股份有限公司 | Mobile terminal measuring control method in multiple carrier frequency small region and multiple small region |
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