WO2012163114A1

WO2012163114A1 - Interference information processing method and device during cell change, user equipment

Info

Publication number: WO2012163114A1
Application number: PCT/CN2012/071601
Authority: WO
Inventors: 施小娟; 黄亚达
Original assignee: 中兴通讯股份有限公司
Priority date: 2011-06-03
Filing date: 2012-02-24
Publication date: 2012-12-06
Also published as: CN102811450B; CN102811450A

Abstract

Disclosed is an interference information processing method during cell change, comprising: when determining that intra-equipment coexistence interference exists after cell change occurs, a user equipment (UE) reporting information about intra-equipment coexistence interference to a network side of a target cell. Also disclosed is an interference information processing device during cell change and a UE. The present invention ensures that the target cell acquires the latest information about intra-equipment coexistence interference between a first radio technology and other radio technologies in a UE supporting more than two radio technologies at the same time, so as to carry out reasonable interference avoidance management and mobility management, ensure the performance of a communication system, and improve the service experience of a UE user.

Description

Method and device for processing interference information when cell is changed, user equipment

The present invention relates to a user equipment (UE, User Equipment) interference information technology, and particularly relates to a method and apparatus for processing interference information when a cell is changed, and a user equipment. Background technique

With the continuous development of radio technology, more and more radio technologies are beginning to be applied. In particular, in order to meet the multiple communication needs of UE users, it is more and more common to use two or more different radio technologies in one UE. .

FIG. 1 is a schematic structural diagram of a UE configured with a Long Term Evolution (LTE), a Wireless Local Area Network (WLAN), and a Bluetooth (Bluetooth) technology. As shown in FIG. 1, the user equipment S100 includes The three radio technology modules are respectively LTE module S101 using long-term evolution technology; WLAN module S102 using wireless local area network technology specified by IEEE Std 802.11 specification, ie, WLAN station; using IEEE Std 802.15 specification The Bluetooth module S103 of the Bluetooth radio technology may also be referred to as an LTE sub-device, a WLAN sub-device and a Bluetooth sub-device, respectively. The three modules respectively perform wireless communication with the peer UE corresponding to the respective radio technologies, wherein the LTE module S101 and the LTE base station (E-UTRAN NodeB, eNB, also referred to as the evolved base station) S104 perform wireless communication through the air interface; S102 wirelessly communicates with another WLAN STA device S105 over the air interface; the Bluetooth module S103 communicates wirelessly with another Bluetooth device S106 over the air interface.

In FIG. 1, the three modules are connected by an inter-radio interface between the radio technologies of the UE. For example, the LTE module S101 and the WLAN module S102 are connected through the first interface L101, and the LTE module S101 and the Bluetooth are connected. Module S103 passes through the second connection The port L102 is connected; the WLAN module S102 and the Bluetooth module S103 are connected through the third interface L103; or, the three modules are controlled by a common control module S107.

When the same UE supports a plurality of different radio technologies, since the UE is limited in size, the spatial distance between modules (also referred to as radio modules) using the two or more radio technologies is relatively close, so that the The spatial isolation between the antenna ports used by two or more radio technologies is large enough, which results in insufficient spacing between the frequencies used by the various radio technologies supported by the same UE, resulting in out-of-band leakage. (Out of band emission), spurious emissions, and receiver blocking, when one of the radio modules transmits a signal, it will interfere with the reception of the signal by another radio module, and vice versa. Moreover, such interference cannot be eliminated by existing filters, thereby affecting the communication quality of each radio module. The above interference is referred to as in-device coexistence interference.

WLAN and Bluetooth use the "ISM, Industrial Scientific and Medical" (2.4 GHz to 2.5 GHz), where WLAN uses the 2.4 GHz to 2.4835 GHz band in the ISM band, and Bluetooth uses 2.4 GHz in the ISM band. ~2.497GHz band. Figure 2 is a schematic diagram showing the distribution of the ISM 2.4 GHz to 2.5 GHz band and its adjacent LTE/Universal Mobile Telecommunications System (UMTS) band. As shown in Figure 2, the ISM band and LTE can be seen from the figure. The band 40/UMTS band c (2.3 GHz to 2.4 GHz) is adjacent, and the ISM band is adjacent to the uplink band (2.5 GHz to 2.57 GHz) of the LTE band 7/UMTS band VII. Taking the UE S100 shown in FIG. 1 as an example, if the LTE module S101 uses the Time Division Duplex (TDD) mode and uses the frequency band 40, and the operating frequency of the LTE module S101 and the operating frequency of the WLAN module S102 and the Bluetooth module S103. When the interval between the two is small, the LTE module S101 and the WLAN module S102 and the Bluetooth module S103 will interfere with each other. As shown in FIG. 2, if the LTE module S101 uses the Frequency Division Duplex (FDD) mode and uses the frequency band 7, since the downlink frequency band of the LTE frequency band 7 is far apart from the ISM frequency band, the WLAN module S102/Bluetooth module S103 Upstream The downlink does not interfere with the downlink signal reception of the LTE module S101, but since the uplink frequency band of the LTE frequency band 7 is adjacent to the ISM frequency band, when the interval between the operating frequency of the LTE module S101 and the operating frequency of the WLAN module S102/the Bluetooth module S103 is small, LTE The uplink transmission of module S101 will interfere with the downlink signal reception of WLAN module S102/Bluetooth module S103.

When a plurality of different radio technologies coexist in the UE, the in-device coexistence interference of the UE will reduce the communication quality of the plurality of different radio technologies and affect the communication experience of the user. In order to reduce or even avoid coexistence interference in the device and ensure a good service experience of the UE, the following scheme is generally adopted: The UE reports the in-device coexistence interference information to the base station, and the base station according to the in-device coexistence interference information reported by the UE and the interference on the base station side Avoid the policy and perform interference avoidance processing. For example, when the UE performs signal transmission and reception, it adopts Frequency Division Multiplexing (FDM) technology or Time Division Multiplexing (TDM) technology.

In the above-mentioned interference avoidance process, in order to prevent the UE from frequently reporting in-device coexistence interference information to the base station, it is specified that the UE only changes the coexistence interference information in the device, for example, the coexistence interference information in the device on the UE service frequency is from nothing. When the in-device coexistence interference information on the adjacent frequency (non-serving frequency) changes, the UE reports the in-device coexistence interference information to the base station. However, the UE is required to report the coexistence interference information of the device to the base station only when the coexistence interference information in the device changes. Although the UE frequently reports the coexistence interference information in the device, the UE may change the serving cell, if the UE is in the source cell. The coexistence interference information in the device is reported, and the coexistence interference information in the device does not change after the UE reaches the target cell. The target cell will not be able to obtain the in-device coexistence interference information of the UE, and the target cell cannot perform reasonable interference avoidance processing. Even when the target cell performs mobility management, the UE is re-switched to the frequency of coexistence interference, resulting in ping-pong handover, which seriously affects communication system performance and user experience. Therefore, effective measures must be sought to ensure interference avoidance processing when the cell is changed, and to prevent ping-pong switching. Summary of the invention

In view of this, the main object of the present invention is to provide an interference information location when a cell is changed. The method, the device, and the user equipment can report the coexistence interference information in the device in time after the cell is changed, so that the network element belonging to the target cell can perform interference avoidance in time.

In order to achieve the above object, the technical solution of the present invention is achieved as follows:

A method for processing interference information when a cell is changed includes:

When the UE determines that there is coexistence interference in the device after the cell change occurs, the UE reports the coexistence interference information in the device to the network side to which the target cell belongs.

Preferably, before the cell change occurs, the method further includes:

When the UE determines that there is a coexistence interference report status timer, the coexistence interference report status timer is cleared.

Preferably, the in-device coexistence interference information includes at least one of the following information:

The interfered frequency information, the uninterrupted frequency information, the time division multiplexed information, and the measurement results of the serving cell and/or the neighboring cell.

Preferably, the time division multiplexing information is usage time information allocated to different communication systems supported by the UE.

Preferably, the occurrence of the cell change is:

The UE is handed over from the source cell to the target cell;

Or the UE is re-established from the source cell RRC connection to the target cell;

Or, the UE is updated from the source cell to the target cell.

Preferably, the network side to which the target cell belongs is a base station or an RNC to which the target cell belongs. An interference information processing apparatus when a cell is changed, comprising a determining unit and a reporting unit, wherein:

a determining unit, configured to: when a cell change occurs in the UE, determine that the UE has coexistence interference in the device, triggering a reporting unit;

The reporting unit is configured to report in-device coexistence interference information of the UE to a network side to which the target cell belongs. Preferably, the device further includes:

And a clearing unit, configured to: before the cell change occurs, the determining unit determines that the coexistence interference report status timer exists in the UE, and clears the coexistence interference report status timer.

Preferably, the occurrence of the cell change is:

The UE is handed over from the source cell to the target cell;

Or, the UE is updated from the source cell to the target cell.

A user equipment includes a determining unit and a reporting unit, wherein:

a determining unit, configured to: when the user equipment itself changes a cell, determine that the user equipment has coexistence interference in the device, triggering a reporting unit;

And a reporting unit, configured to report in-device coexistence interference information of the user equipment to a network side to which the target cell belongs.

Preferably, the user equipment further includes:

And a clearing unit, configured to: before the cell change occurs, the determining unit determines that the coexistence interference report status timer exists in the user equipment itself, and clears the coexistence interference report status timer.

Preferably, the occurrence of the cell change is:

The UE is handed over from the source cell to the target cell;

Or the UE is re-established from the source cell RRC connection to the target cell; Or, the UE is updated from the source cell to the target cell.

In the present invention, when the UE changes the cell, if it determines that there is coexistence interference in the device, it reports the coexistence interference information in the device to the network side to which the target cell belongs. Therefore, the target cell obtains the latest in-device coexistence interference information between the first radio technology and other radio technologies in the UE supporting the two or more radio technologies, so as to adopt reasonable interference avoidance management and mobility management to ensure the performance of the communication system. Improve the business experience of UE users. DRAWINGS

FIG. 1 is a schematic structural diagram of a UE configured with LTE, WLAN, and Bluetooth technologies; FIG. 2 is a schematic diagram of distribution of an ISM 2.4 GHz to 2.5 GHz band and its adjacent LTE/UMTS bands;

FIG. 3 is a flowchart of a method for processing interference information when a cell is changed according to Embodiment 1 of the present invention; FIG. 4 is a flowchart of a method for processing interference information when a cell is changed according to Embodiment 2 of the present invention; FIG. FIG. 6 is a flowchart of a method for processing interference information when a cell is changed according to Embodiment 4 of the present invention; FIG. 7 is a schematic structural diagram of a structure of an interference information processing apparatus when a cell is changed according to the present invention; The schematic diagram of the composition of the user equipment of the present invention. detailed description

The basic idea of the present invention is to report in-device coexistence interference information to the network side to which the target cell belongs when it determines that there is coexistence interference in the device after the UE changes.

The present invention will be further described in detail below with reference to the accompanying drawings.

To solve the interference avoidance process when the cell is changed, to prevent the ping-pong handover, to ensure good system performance, and to provide a good service experience to the UE user, the related art proposes that, in the cell change process, the source cell reports the UE in the source cell. The in-device coexistence interference information is sent to the target cell. For example, after the source cell makes a handover decision to handover the UE to the target cell, the source cell initiates a handover preparation process to the target cell; during the handover preparation process, the source cell sends a handover request (HANDOVER REQUEST) message to the target cell. The device carries the interference information in the device reported by the UE in the source cell, so that the target cell can perform reasonable interference avoidance processing after the UE switches to the target cell according to the in-device coexistence interference information carried in the handover request message. For example, when performing mobility management, it is prevented to switch the UE to the frequency where coexistence interference exists.

The method for transmitting the in-device coexistence interference information to the target cell in the handover preparation process is applicable to the case where the intra-device coexistence interference of the UE does not change during the handover initiation preparation process initiated by the base station until the UE successfully switches to the target cell. However, when the base station initiates the handover preparation procedure until the UE successfully switches to the target cell, if the operating frequencies of the LTE/UMTS sub-device and the WLAN/Bluetooth sub-device within the same UE change, or the transmission power changes, or the WLAN/Bluetooth sub-device is turned off. The target cell will not be able to obtain the latest in-device coexistence interference information after the change, thereby affecting the interference avoidance management and mobility management of the target cell, resulting in lower system performance and user service experience.

To this end, the present invention provides a method for processing interference information when a cell is changed, including:

After the UE changes to the target cell, if it is determined that the coexistence interference exists in the device, the UE triggers reporting the coexistence interference information to the target base station to which the target cell belongs;

Alternatively, before the UE changes to the target cell, the coexistence interference report status timer is cleared. After the UE changes to the target cell, if the coexistence interference is determined, the UE triggers reporting the coexistence interference information to the target base station to which the target cell belongs.

The in-device coexistence interference information includes at least one of the following: interfered (or unavailable) frequency information, uninterrupted (or available) frequency information, time division multiplexing information, and, serving cell and / or measurement results in the neighborhood. The time division multiplexing information is, the time and configuration configured for the UE to use in the first system (such as the LTE/UMTS system), and the time used by the UE in the second system (such as WLAN/Bluetooth) or other systems. Assign information. The UE changes from the source cell to the target cell, where:

The UE switches from the source d to the target cell;

Alternatively, the UE retransmits (Radio Resource Control Re-establishment) from the source cell to the target cell;

Alternatively, the UE updates from the source cell to the target cell.

Embodiment 1

In the embodiment of the present invention, the UE is an intelligent UE, and the UE uses two radio technologies, namely, a first radio technology using LTE technology and a second radio technology using WLAN technology, and the first wireless electronic device using LTE technology in the current UE. The module is in an RRC connected state in the source cell, and the base station to which the source cell belongs is a source base station (S-eNB). FIG. 3 is a flowchart of a method for processing interference information in a cell change according to Embodiment 1 of the present invention. As shown in FIG. 3, the method for processing interference information in the cell change of this example specifically includes the following steps:

S301: The UE determines that there is coexistence interference in the device, and determines that the coexistence interference information in the device needs to be reported to the network, and the UE reports the coexistence interference information in the device to the source base station.

The in-device coexistence interference information includes at least one of the following:

Disturbed (or unavailable) frequency information;

Uninterrupted (or available) frequency information;

Time division multiplexing information;

The measurement results of the service 'j, zone and/or neighbourhood;

The time division multiplexing information is used to characterize the time allocated for the UE to be used in the first system LTE system and the allocation information indicating the time allocated for the UE to use in the second system WLAN. No longer praise. 5302. The source base station makes a handover decision. The source base station according to the mobility management policy of the base station, according to the in-device coexistence interference information reported by the UE and/or the measurement report reported by the UE (as indicated by the dotted line before step S302 in FIG. 3, if the UE reports the measurement report to the base station, the base station The handover decision may be performed according to the measurement report reported by the UE. The handover decision is made, and the UE is handed over to the target cell (the base station where the target cell is located is the target base station T-eNB).

S303. The source base station sends a handover request message to the target base station. The handover request message includes information of a target cell, configuration information of the UE in the source cell, and the like.

5304: After the source base station sends the handover request message to the target base station, but the UE does not receive the feedback of the target base station, the UE determines that the coexistence interference in the device changes (the coexistence interference still exists in the device), and the UE reports the changed to the source base station. The interference information in the device coexists, and the content of the specific report is the same as the coexistence interference information item in the device in step S301.

S305. The target base station feeds back a handover request response message to the source base station. The handover request response message includes configuration information that the UE switches to the target cell.

After receiving the handover request response message fed back by the target base station, the source base station sends a handover command to the UE to notify the UE to switch to the target cell, where the handover command includes configuration information that the UE switches to the target cell.

5307. The UE switches to the target cell. After the handover succeeds, the UE sends a handover completion message to the target base station, and notifies the target base station that the handover is completed.

After the UE successfully switches to the target cell, that is, after the UE changes to the target cell, it determines that the coexistence interference exists in the device, and the UE triggers reporting the coexistence interference information in the device to the target base station where the target cell is located. The in-device coexistence interference information item is the same as that in the foregoing step S301.

It should be noted that, in this example, after the UE successfully switches to the target cell, if it is determined that the coexistence interference exists in the device, the UE triggers reporting the in-device coexistence interference information to the target base station where the target cell is located, and the coexistence interference information in the device may be The handover complete message at step S307 (in the LTE system, the handover complete message is RRC connection reconfiguration completed) The transmission in (RRCConnectionReconfigurationComplete) message may also be sent by adding a new RRC message in step S308.

Embodiment 2

In the embodiment of the present invention, the UE is an intelligent UE, and the UE uses two radio technologies, namely, a first radio technology using LTE technology and a second radio technology using Bluetooth technology, and the first wireless electronic device using LTE technology in the current UE. The module is in an RRC connected state in the source cell, and the base station to which the source cell belongs is a source base station (S-eNB). FIG. 4 is a flowchart of a method for processing interference information in a cell change according to Embodiment 2 of the present invention. As shown in FIG. 4, the method for processing interference information in the cell change of this example specifically includes the following steps:

5401. At a certain moment, the second radio module that uses the Bluetooth technology is enabled, and the UE determines that there is coexistence interference in the device, and determines that the coexistence interference information in the device needs to be reported to the network side, and the UE reports the coexistence interference information in the device to the source base station. At the same time, the UE starts the coexistence interference state timer, and the UE does not report the coexistence interference information in the device to the network side, whether the coexistence interference in the device changes or not before the coexistence interference state timer expires or clears.

5402. In the same manner as step S302 in the first embodiment, details of implementation are not described herein.

5403. In the same manner as step S303 in the first embodiment, the implementation details are not described herein again.

5404. In the same manner as step S305 in the first embodiment, the implementation details are not described herein again.

5405. In the same manner as step S306 in the first embodiment, the implementation details are not described herein again.

5406. After receiving the handover command sent by the source base station, the UE clears the coexistence interference state timer that is started in step S401, that is, clears the count state of the coexistence interference state timer and stops the coexistence interference state timer.

5407, in the same manner as step S307 in the first embodiment, the implementation details are not described herein again.

After the UE successfully switches to the target cell, that is, after the UE changes to the target cell, it is determined that the coexistence interference exists in the device, and the coexistence interference state timer is not running, and the UE triggers reporting the in-device coexistence interference information to the target base station where the target cell is located. With the first embodiment, it should be noted that, in this example, after the UE successfully switches to the target cell, if it is determined that there is in-device coexistence interference, and the coexistence interference state timer is not running, the UE triggers reporting to the target base station where the target cell is located. The internal coexistence interference information may be sent in the handover complete message of step S407, or may be sent by adding a new RRC message in step S408.

Embodiment 3

In the embodiment of the present invention, the UE is an intelligent UE, and the UE uses two radio technologies, namely, a first radio technology using LTE technology and a second radio technology using WLAN technology, and the first wireless electronic device using LTE technology in the current UE. The module is in an RRC connected state in the source cell, and the base station to which the source cell belongs is a source base station (S-eNB). FIG. 5 is a flowchart of a method for processing interference information in a cell change according to Embodiment 3 of the present invention. As shown in FIG. 5, the method for processing interference information in the cell change of this example specifically includes the following steps:

5501. At a certain moment, the second radio module that uses the WLAN technology is enabled, and the UE determines that the coexistence interference exists in the device, and determines that the coexistence interference information in the device needs to be reported to the network side, and the UE reports the coexistence interference information in the device to the source base station. At the same time, the UE starts the coexistence interference state timer, and the UE does not report the coexistence interference information in the device to the network side, whether the coexistence interference changes or not before the coexistence interference state timer expires or clears.

5502. The UE detects a radio link failure in the serving cell (source cell).

S503. The UE clears the coexistence interference state timer, initiates cell selection, and selects a target cell.

S504: The UE initiates an RRC connection reestablishment in the target cell, and sends an RRC connection reestablishment request (RRCConnectionReestablishmentRequest) to the target base station where the target cell is located.

S505. The target cell receives the RRC connection reestablishment request of the UE, and sends an RRC connection reestablishment message (RRCConnectionReestablishment) to the UE, where the message carries the dedicated configuration information configured by the target cell for the UE.

S506: After receiving the RRC connection reestablishment message sent by the target cell, the UE connects according to the RRC. Reconfigure the related parameters of the configuration information carried in the message, and send the feedback to the target base station after the configuration succeeds.

RRC Connection Reestablishment Complete message (RRCConnectionReestablishmentComplete).

S507: After the UE successfully reestablishes the target cell, that is, after the UE changes to the target cell, it is determined that the coexistence interference exists in the device, and the coexistence interference state timer is not running, and the UE triggers reporting the in-device coexistence interference information to the target base station where the target cell is located.

It should be noted that, in this example, after the UE successfully reestablishes the target cell, if it is determined that the coexistence interference exists in the device, and the coexistence interference state timer is not running, the UE triggers reporting the in-device coexistence interference information to the target base station where the target cell is located. The in-device coexistence interference information may be in the step

The RRC connection reestablishment completion message is sent in S506, and may also be sent by adding an RRC message in step S507.

It should be noted that, in this example, if the coexistence interference state timer is not set, the UE does not need to enable the coexistence interference state timer in step S501, and the UE does not need to clear the coexistence interference state timer in step S503, step S507. After the UE successfully reestablishes the target cell, if it determines that the coexistence interference exists in the device, the UE triggers reporting the in-device coexistence interference information to the target base station where the target cell is located.

Embodiment 4

In this embodiment, the UE is an intelligent UE, and the UE uses two radio technologies, namely, a first radio technology using UMTS technology and a second radio technology using WLAN technology, and a first wireless electronic module using UMTS technology in the current UE. The source cell is in an RRC connected state, and the source cell is controlled by a source radio network controller (RNC, Radio Network Controller) S-RNC. FIG. 6 is a flowchart of a method for processing interference information when a cell is changed according to Embodiment 4 of the present invention. As shown in FIG. 6, the method for processing interference information in the cell change of this example specifically includes the following steps:

S601: At a certain moment, the second radio module that uses the WLAN technology is enabled, and the UE determines that the coexistence interference exists in the device, and determines that the coexistence interference information in the device needs to be reported to the network side, and the UE reports the coexistence interference information to the S-RNC. At the same time, the UE starts the coexistence interference state timer. The UE does not report the coexistence interference information in the device to the network side, whether the coexistence interference in the device changes or not before the coexistence interference state timer expires or is cleared.

5602. The UE initiates a cell update because a radio link failure occurs in the source cell, or an RLC unrecoverable error occurs, or a cell reselection occurs. After the UE selects the target cell, the coexistence interference state timer is cleared.

S603: The UE initiates a cell update in the target cell, and sends a cell update message to the target radio network controller T-RNC.

5604. The target cell receives the cell update request of the UE, and sends a cell update confirmation (Cell Update Confirm) message to the UE, where the message carries the related resource information configured by the target cell for the UE.

After receiving the cell update acknowledgement message sent by the target cell, the UE determines that the coexistence interference exists in the device, and the coexistence interference state timer is not running, and the UE triggers reporting the coexistence interference information in the device to the T-RNC where the target cell is located.

FIG. 7 is a schematic structural diagram of the interference information processing apparatus when the cell is changed according to the present invention. As shown in FIG. 7, the interference information processing apparatus when the cell is changed includes the determining unit 70 and the fourth reporting unit 71, wherein:

The determining unit 70 is configured to: after the cell change occurs in the UE, determine that the UE has coexistence interference in the device, triggering the reporting unit 71;

The reporting unit 71 is configured to report in-device coexistence interference information of the UE to a network side to which the target cell belongs.

In addition to the interference information processing apparatus at the time of cell change shown in FIG. 7, the interference information processing apparatus at the time of cell change of the present invention further includes: a clearing unit (not shown in FIG. 7) for performing a cell change, When the determining unit 70 determines that there is a coexistence interference report status timer in the UE, the coexistence interference report status timer is cleared.

The in-device coexistence interference information includes at least one of the following information:

Interference frequency information, uninterrupted frequency information, time division multiplexing information, and service Measurement results of the cell and/or neighboring cell.

Preferably, the occurrence of the cell change is:

The UE is handed over from the source cell to the target cell;

Or the UE is re-established from the source cell radio resource control RRC connection to the target cell; or the UE is updated from the source cell to the target cell.

It should be understood by those skilled in the art that the interference information processing apparatus at the time of cell change of the present invention is correspondingly designed to implement the interference information processing method when the cell is changed. The corresponding function of each processing unit in the interference information processing apparatus at the time of the cell change can be understood by referring to the related description of the interference information processing method at the time of cell change. Those skilled in the art should understand that the functions of the above various processing units can be implemented by means of specific hardware circuits or processors and corresponding execution software.

FIG. 8 is a schematic structural diagram of a user equipment according to the present invention. As shown in FIG. 8, the user equipment of the present invention includes a determining unit 80 and a reporting unit 81, where:

The determining unit 80 is configured to: after the user equipment itself changes the cell, determine that the user equipment has coexistence interference in the device, triggering the reporting unit 81;

The reporting unit 81 is configured to report in-device coexistence interference information of the user equipment to a network side to which the target cell belongs.

On the basis of the user equipment shown in FIG. 8, the user equipment of the present invention further includes: a clearing unit (not shown in FIG. 8) for determining that the user equipment itself exists in the determining unit 80 before the cell change occurs. When the coexistence interference reports the status timer, the coexistence interference report status timer is cleared.

The above-mentioned cell change is: The UE is handed over from the source cell to the target cell;

Or, the UE is updated from the source cell to the target cell.

It should be understood by those skilled in the art that the user equipment of the present invention is correspondingly designed to implement the interference information processing method when the cell is changed. The corresponding functions of the processing units in the user equipment can be understood by referring to the related description of the interference information processing method when the cell is changed. Those skilled in the art should understand that the functions of the above processing units can be implemented by means of specific hardware circuits or processors and corresponding execution software. The user equipment of the present invention is merely illustrative and only describes the functions related to the technical solution of the present invention.

The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

Claims

Claim

A method for processing interference information when a cell is changed, the method includes: when the user equipment UE determines that there is coexistence interference in the device after the cell change occurs, reporting the coexistence interference in the device to the network side of the target cell information.

The method according to claim 1, wherein before the cell change occurs, the method further includes:

The method according to claim 1, wherein the in-device coexistence interference information comprises at least one of the following information:

4. The method according to claim 3, wherein the time division multiplexing information is usage time information configured to different communication systems supported by the UE.

The method according to claim 1, wherein the cell change occurs: the UE switches from a source cell to a target cell;

The method according to any one of claims 1 to 5, wherein the network side to which the target cell belongs is a base station or a radio network controller RNC to which the target cell belongs.

7. An interference information processing apparatus when a cell is changed, wherein the apparatus comprises a determining unit and a reporting unit, wherein:

a determining unit, configured to: when a cell change occurs in the UE, determine that the UE has in-device coexistence interference, trigger a reporting unit; The reporting unit is configured to report in-device coexistence interference information of the UE to a network side to which the target cell belongs.

The device according to claim 7, wherein the device further includes: a clearing unit, configured to: before the cell change occurs, the determining unit determines that a coexistence interference report state timer exists in the UE, Clear the coexistence interference report status timer.

9. The apparatus according to claim 7, wherein the in-device coexistence interference information comprises at least one of the following information:

10. The apparatus according to claim 7, wherein the occurrence of a cell change is:

The UE is handed over from the source cell to the target cell;

Or, the UE is updated from the source cell to the target cell.

A user equipment, wherein the user equipment comprises a determining unit and a reporting unit, wherein:

The user equipment according to claim 11, wherein the user equipment further includes:

a clearing unit, configured to: before the cell change occurs, the determining unit determines that the coexistence interference report status timer exists in the user equipment, and clears the coexistence interference report status

The user equipment according to claim 11, wherein the in-device coexistence interference information comprises at least one of the following information:

The user equipment according to claim 11, wherein the occurrence of a cell change is:

The UE is handed over from the source cell to the target cell;

Or, the UE is updated from the source cell to the target cell.