WO2010108320A1 - Method, apparatus and system for handover in multi-carrier frequency system - Google Patents

Abstract

The method, apparatus and system for handover in multi-carrier frequency system are provided. The method comprises: receiving the first measurement report of the main carrier frequency and the secondary carrier frequency, the corresponding frequency of the main carrier frequency is the first carrier frequency, and the corresponding frequency of the secondary carrier frequency is the second frequency (101); acquiring the wireless signal quality of the first carrier frequency and wireless signal quality of the second carrier frequency according to the first measurement report (102); when the wireless signal quality of the second carrier frequency is better than that of the first carrier frequency, switching the corresponding frequency of the main carrier frequency to the second carrier frequency, and switching the corresponding frequency of the secondary carrier frequency to the first carrier frequency (103). In the embodiment of the invention, when the wireless signal quality of the secondary carrier frequency is better than that of the main carrier frequency, the RNC (radio network controller) can switch the corresponding frequency of the main carrier frequency to that of the original secondary carrier frequency, and switch the corresponding frequency of the secondary carrier frequency to that of the original main carrier frequency, so that the throughout of UE in the moving process can be improved, and the connection dropping probability can be reduced.

Description

 Switching method, device and system in multi-carrier system

 The present invention relates to the field of mobile communication technologies, and in particular, to a handover method, apparatus and system in a multi-carrier frequency system. Background technique

 The introduction of the multi-carrier frequency technology can greatly improve the peak rate of uplink and downlink data supported by the High Speed Packet Access (HSPA) technology in the Wideband Code Division Multiple Access (WCDMA) system. In the multi-carrier system, the user equipment (UE) can be connected to multiple cells working at different carrier frequencies at the same time. The UE can receive high-speed downlink packet connection through multiple cells working on different carrier frequencies. High Speed Downlink Packet Access (HSDPA) data and High Speed Uplink Packet Access (HSUPA) data.

 When the UE works on the dual carrier frequency, one carrier frequency is pre-configured to be the primary carrier frequency of the UE, and the other carrier frequency is the secondary carrier frequency of the UE, and the working carrier frequency of the UE is configured as the primary carrier frequency. The dual-cell HSDPA (Dual Cell-HSDPA) system includes a pair of cells with the same coverage area. The cell operating at the primary carrier frequency is the primary carrier frequency cell, and the cell operating at the secondary carrier frequency is the secondary carrier frequency cell. The primary carrier frequency cell and the secondary carrier frequency cell with the same coverage area form a cell pair, and provide downlink HSDPA data transmission for the UE, that is, in the DC-HSDPA system, the serving cell of the serving UE includes a primary carrier frequency cell and a secondary carrier. Frequency cell.

In the prior art, measurement and mobility management for the UE are performed based on the primary carrier frequency. When the UE moves to the edge of the primary carrier frequency or the secondary carrier frequency cell currently serving the UE, the radio signal quality of the primary carrier frequency cell and the secondary carrier frequency cell are relatively poor, and the radio network controller (Radio Network Controller, referred to as RNC) The handover of the serving cell is performed according to the measurement report of the primary carrier frequency reported by the UE or the base station (NodeB), and the primary carrier frequency cell and the secondary carrier frequency cell of the UE are simultaneously switched to work with another adjacent pair. The carrier frequency carrier and the cell operating in the secondary carrier frequency to form a new serving UE serving cell, compared with the single carrier frequency system, the primary carrier frequency cell and the auxiliary carrier in the multi-carrier system The sum of the radio signal quality of the frequency cell is rapidly decreasing at the edge of the primary carrier frequency or the secondary carrier frequency cell. Therefore, the serving cell handover in the DC-HSDPA system increases the call drop rate during the handover process, and reduces the handover. The throughput rate of the UE during the process. Summary of the invention

 Embodiments of the present invention provide a handover method, apparatus, and system in a multi-carrier frequency system, which are used to improve terminal throughput and reduce call drop rate.

 The embodiment of the invention provides a handover method in a multi-carrier frequency system, including:

 Receiving a first measurement report of the primary carrier frequency and the secondary carrier frequency, the frequency corresponding to the primary carrier frequency is a first carrier frequency, and the frequency corresponding to the secondary carrier frequency is a second carrier frequency;

 Obtaining, according to the first measurement report, a radio signal quality of the first carrier frequency and a radio signal quality of the second carrier frequency;

 When the quality of the wireless signal of the second carrier frequency is better than the quality of the wireless signal of the first carrier frequency, switching the frequency corresponding to the primary carrier frequency to the second carrier frequency, and using the secondary carrier frequency The corresponding frequency is switched to the first carrier frequency.

 The embodiment of the invention further provides a radio network controller, including:

 a first receiving module, configured to receive a first measurement report of a primary carrier frequency and a secondary carrier frequency, where a frequency corresponding to the primary carrier frequency is a first carrier frequency, and a frequency corresponding to the secondary carrier frequency is a second carrier frequency;

 a first acquiring module, configured to acquire, according to the first measurement report, a radio signal quality of the first carrier frequency and a radio signal quality of the second carrier frequency;

 a first processing module, configured to: when the quality of the wireless signal of the second carrier frequency is better than the quality of the wireless signal of the first carrier frequency, switch the frequency corresponding to the primary carrier frequency to the second carrier frequency, And switching a frequency corresponding to the secondary carrier frequency to the first carrier frequency.

The embodiment of the present invention further provides a switching system in a multi-carrier frequency system, including a radio network controller, configured to receive a first measurement report of a primary carrier frequency and a secondary carrier frequency, where the frequency corresponding to the primary carrier frequency is a carrier frequency, the frequency corresponding to the secondary carrier frequency is a second carrier frequency, and according to the first measurement report, acquiring a wireless signal quality of the first carrier frequency and a wireless signal quality of the second carrier frequency, when When the quality of the wireless signal of the second carrier frequency is better than the quality of the wireless signal of the first carrier frequency, switching the frequency corresponding to the primary carrier frequency to the second carrier frequency, and corresponding to the secondary carrier frequency Frequency switched to the stated The first carrier frequency.

 According to the foregoing technical solution, the wireless network controller of the embodiment of the present invention obtains the wireless signal quality of the primary carrier frequency and the wireless signal quality of the secondary carrier frequency according to the received first measurement of the primary carrier frequency and the secondary carrier frequency. When the quality of the wireless signal of the secondary carrier frequency is better than the quality of the wireless signal of the primary carrier frequency, the frequency corresponding to the primary carrier frequency is switched to the frequency corresponding to the original secondary carrier frequency, and the frequency corresponding to the secondary carrier frequency is switched to the original primary carrier frequency. On the carrier frequency, the throughput during the terminal movement is improved, and the call drop rate is reduced. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are set forth in the description of the claims Other drawings may also be obtained from these drawings without the inventive labor.

 1 is a schematic flowchart of a handover method in a multiple carrier frequency system according to Embodiment 1 of the present invention; FIG. 2A is a network structure of a dual carrier frequency system to which a handover method in a multiple carrier frequency system according to Embodiment 2 of the present invention is applied; Schematic diagram

 2B is a schematic flowchart of a handover method in a multi-carrier frequency system according to Embodiment 2 of the present invention; FIG. 2C is a diagram showing a radio signal quality of a multi-carrier frequency system in a handover method in a multi-carrier frequency system according to Embodiment 2 of the present invention; Schematic diagram of change

 3A is a schematic flowchart of a handover method in a multiple carrier frequency system according to Embodiment 3 of the present invention; FIG. 3B is a schematic diagram of a wireless signal quality of a multiple carrier frequency system in a handover method in a multiple carrier frequency system according to Embodiment 3 of the present invention; Schematic diagram of change

 4 is a schematic structural diagram of a radio network controller according to Embodiment 4 of the present invention;

 FIG. 5 is a schematic structural diagram of a radio network controller according to Embodiment 5 of the present invention; FIG.

 6 is a schematic structural diagram of a radio network controller according to Embodiment 6 of the present invention;

 FIG. 7 is a schematic structural diagram of a handover system in a multiple carrier frequency system according to Embodiment 7 of the present invention. detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and Not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without departing from the inventive scope are the scope of the present invention.

 FIG. 1 is a schematic flowchart of a handover method in a multiple carrier frequency system according to Embodiment 1 of the present invention. As shown in FIG. 1, the handover method in the multiple carrier frequency system of this embodiment may include the following steps:

 Step 101: Receive a first measurement report of a primary carrier frequency and a secondary carrier frequency, where a frequency corresponding to the primary carrier frequency is a first carrier frequency, and a frequency corresponding to the secondary carrier frequency is a second carrier frequency;

 Step 102: Acquire a wireless signal quality of the first carrier frequency and a wireless signal quality of the second carrier frequency according to the foregoing first measurement report.

 Step 103: When the quality of the wireless signal of the second carrier frequency is better than the quality of the wireless signal of the first carrier frequency, switching the frequency corresponding to the primary carrier frequency to the second carrier frequency, and switching the frequency corresponding to the secondary carrier frequency to the The first carrier frequency.

 In this embodiment, the UE or the NodeB detects the radio signal quality of the first carrier frequency and the radio signal quality of the second carrier frequency according to the first measurement control command issued by the RNC, when the second carrier frequency is detected. When the quality of the wireless signal is better than the quality of the wireless signal of the first carrier frequency, the first measurement report (Measurement Report) is reported to the RNC. RNC received

The first measurement on the UE or the NodeB obtains the wireless signal quality of the first carrier frequency and the wireless signal quality of the second carrier frequency. When the quality of the wireless signal of the second carrier frequency is better than the quality of the wireless signal of the first carrier frequency, the RNC switches the frequency corresponding to the primary carrier frequency to the second carrier frequency, and simultaneously switches the frequency corresponding to the secondary carrier frequency to the first carrier frequency. In the above, the throughput during the UE mobile process is improved, and the call drop rate is reduced.

 The number of the secondary carrier frequencies in this embodiment may be one or more, that is, the frequency corresponding to the secondary carrier frequency may be a second carrier frequency or a plurality of second carrier frequencies. For the case of multiple secondary carrier frequencies, the UE or the NodeB can report the first measurement report to the RNC as long as the quality of the wireless signal of the second carrier frequency is better than the quality of the wireless signal of the first carrier frequency, and the RNC can The frequency corresponding to the main carrier frequency is switched to the corresponding second carrier frequency, and the frequency corresponding to the corresponding secondary carrier frequency is switched to the first carrier frequency. In the following embodiments of the present invention, the technical solution of the embodiment of the present invention will be described in detail by taking the case where the number of the secondary carrier frequencies is one, that is, the dual carrier frequency system.

2A is a schematic diagram of a network structure of a dual carrier frequency system to which a handover method in a multiple carrier frequency system according to Embodiment 2 of the present invention is applied. As shown in FIG. 2A, the dual carrier frequency system of this embodiment is operated by a first cell C11 on a frequency and a second cell C21 operating on a second frequency The coverage area of the first cell C11 is smaller than the coverage area of the second cell C21, which can be specifically implemented by the following means:

 a, power control

 The transmit power of the pilot channel of the first cell C11 is smaller than the transmit power of the pilot channel of the second cell C21 by controlling the transmit power of the pilot channels of the two cells;

 b, load control

 The load of the first cell C11 is greater than the load of the second cell C21 by controlling the load of the two cells;

 c Control base station location

 By controlling the antenna position of the base station to which the two cells belong;

 d, control the working frequency

 The two cells are controlled to operate on different frequencies, and the working frequency of the first cell C11 is greater than the operating frequency of the second cell C21.

 In the dual carrier frequency system of the embodiment, the neighboring cell of the first cell C11 is the third cell C12 operating on the first frequency, and the neighboring cell of the second cell C21 is the fourth working on the second frequency. The cell C22, and the coverage area of the third cell C12 is larger than the coverage area of the fourth cell C22.

 2B is a schematic flowchart of a handover method in a multiple carrier frequency system according to Embodiment 2 of the present invention. As shown in FIG. 2B, the handover method in the multiple carrier frequency system of this embodiment may include the following steps:

 Step 201: The RNC receives the first measurement report of the primary carrier frequency and the secondary carrier frequency, where the frequency corresponding to the primary carrier frequency is the first carrier frequency f1, and the frequency corresponding to the secondary carrier frequency is the second carrier frequency f2, and the serving cell of the current serving UE The first cell C11 operating on the first carrier frequency f1 and the second cell C21 operating on the second carrier frequency f2 are included;

 In this step, when the UE moves initially, the serving cell includes a first cell C11 on the primary carrier frequency and a second cell C21 on the secondary carrier frequency. During the movement of the UE, the UE or the NodeB detects the radio signal quality of the first carrier frequency f1 and the radio signal quality of the second carrier frequency f2 according to the first measurement control command sent by the RNC. When the UE moves to the edge of the first cell C11 and detects that the wireless signal quality of the second carrier frequency f2 is better than the wireless signal quality of the first carrier frequency, the UE or the NodeB reports the first measurement report to the RNC.

Step 202: The RNC acquires the wireless signal quality of the first carrier frequency f1 according to the foregoing first measurement report. And the wireless signal quality of the second carrier frequency f2;

 Step 203: When the wireless signal quality of the second carrier frequency f2 is better than the wireless signal quality of the first carrier frequency f1, the RNC switches the frequency corresponding to the primary carrier frequency to the second carrier frequency f2, and the frequency corresponding to the secondary carrier frequency. Switch to the first carrier frequency Π;

 In this step, the RNC triggers the switching of the primary carrier frequency, switches the frequency corresponding to the primary carrier frequency to the second carrier frequency f2, and switches the frequency corresponding to the secondary carrier frequency to the first carrier frequency 1, and the switched serving cell includes The second cell C21 on the primary carrier frequency and the first cell C11 on the secondary carrier frequency.

 Step 204: The RNC receives a second measurement report of the secondary carrier frequency, where the frequency corresponding to the secondary carrier frequency is the first carrier frequency f1, and the neighboring cell of the serving cell of the current serving UE includes the third cell working on the first carrier frequency 1. C12;

 In this step, the UE or the NodeB detects the radio signal quality of the first cell C11 and the radio signal quality of the third cell C12 according to the second measurement control command sent by the RNC. When the UE moves to the edge of the first cell C11, and detects that the radio signal quality of the third cell C12 is better than the radio signal quality of the first cell C11, the UE or the NodeB reports the second measurement report to the RNC.

 Step 205: The RNC acquires the radio signal quality of the first cell C11 and the radio signal quality of the third cell C12 according to the foregoing second measurement report.

 Step 206: When the radio signal quality of the third cell C12 is better than the radio signal quality of the first cell C11, the RNC removes the first cell C11 from the serving cell of the currently serving UE, and loads the third cell C12 into the current service. In the serving cell of the UE;

 In this step, the RNC triggers the unloading and loading of the secondary carrier frequency cell, and replaces the secondary carrier frequency cell (the third cell C12) with better radio signal quality with the secondary carrier frequency cell with poor radio signal quality (the first cell C11) The switched serving cell includes a second cell C21 on the primary carrier frequency and a third cell C12 on the secondary carrier frequency.

 Step 207: The RNC receives the first measurement report of the primary carrier frequency and the secondary carrier frequency, where the frequency corresponding to the primary carrier frequency is the second carrier frequency f2, and the frequency corresponding to the secondary carrier frequency is the first carrier frequency, and the serving cell of the current serving UE The third cell C12 operating on the first carrier frequency 1 and the second cell C21 operating on the second carrier frequency f2 are included;

In this step, the UE or the NodeB is issued according to the RNC during the continuous mobility of the UE. The first measurement control command detects the wireless signal quality of the second carrier frequency f2 and the wireless signal quality of the first carrier frequency 1. When the UE moves to the edge of the second cell C21, and detects that the radio signal quality of the first carrier frequency 1 is better than the radio signal quality of the second carrier frequency f2, the UE or the NodeB reports the first measurement report to the RNC.

 Step 208: The RNC obtains the wireless signal quality of the second carrier frequency f2 and the wireless signal quality of the first carrier frequency 1 according to the foregoing first measurement report.

 Step 209: When the wireless signal quality of the first carrier frequency 1 is better than the wireless signal quality of the second carrier frequency f2, the RNC switches the frequency corresponding to the primary carrier frequency to the first carrier frequency f1, and the frequency corresponding to the secondary carrier frequency. Switching to the second carrier frequency f2;

 In this step, the RNC triggers the switching of the primary carrier frequency, and switches the frequency corresponding to the primary carrier frequency to the first carrier frequency 1, and simultaneously switches the frequency corresponding to the secondary carrier frequency to the second carrier frequency f2, and the switched serving cell includes The third cell C12 on the primary carrier frequency and the second cell C21 on the secondary carrier frequency.

 Step 210: The RNC receives a second measurement report of the secondary carrier frequency, where the frequency corresponding to the secondary carrier frequency is the second carrier frequency f2, and the neighboring cell of the serving cell of the current serving UE includes the fourth cell working on the second carrier frequency f2. C22;

 In this step, the UE or the NodeB detects the radio signal quality of the second cell C21 and the radio signal quality of the fourth cell C22 according to the second measurement control command sent by the RNC. When the UE moves to the edge of the second cell C21, and detects that the wireless signal quality of the fourth cell C22 is better than the wireless signal quality of the second cell C21, the UE or the NodeB reports the second measurement report to the RNC.

 Step 211: The RNC acquires the radio signal quality of the second cell C21 and the radio signal quality of the fourth cell C22 according to the foregoing second measurement report.

 Step 212: When the radio signal quality of the fourth cell C22 is better than the radio signal quality of the second cell C21, the RNC removes the second cell C21 from the serving cell of the currently serving UE, and loads the fourth cell C22 into the current service. In the serving cell of the UE.

In this step, the RNC triggers the unloading and loading of the secondary carrier frequency cell, and replaces the secondary carrier frequency cell (fourth cell C22) with better radio signal quality with the secondary carrier frequency cell with poor radio signal quality (second cell C21) The switched serving cell includes a third cell C12 on the primary carrier frequency and a fourth cell C22 on the secondary carrier frequency. 2C is a multi-loading method in a multi-carrier frequency system according to Embodiment 2 of the present invention; Schematic diagram of the variation of the wireless signal quality of the frequency system.

 So far, the method of the embodiment of the present invention completes the handover of the serving cell in the UE mobile process, the handover of the primary carrier frequency, and the handover of the serving cell implemented by the unloading and loading of the secondary carrier frequency cell may not completely interrupt the communication of the UE. The process improves the throughput during the UE mobile process and reduces the dropped call rate.

 Further, in the method of the embodiment, during the handover of the serving cell of the serving UE, a ping-pong handover problem may occur, for example: when the UE moves back and forth at the edge of the first cell C11 or the edge of the second cell C21. At the same time, repeated loading and loading of the secondary carrier frequency cell may occur, which directly leads to a large number of reconfiguration messages at the edge of the dual carrier frequency system, which increases the burden on the system and the UE, thereby affecting the communication quality. Therefore, in order to avoid the above problem, the RNC, the UE, or the NodeB may also start the second protection timer after the step 206 and the step 212, and the UE or the NodeB does not report to the RNC before the second protection timer expires. The second measurement report, or the RNC ignores the second measurement report reported by the UE or the NodeB (the second measurement report is not processed).

 Similarly, in order to prevent frequent switching of the primary carrier frequency, the RNC, the UE or the NodeB may also start the first protection timer after the step 203 and the step 209, and the UE or the NodeB does not forward before the first protection timer expires. The RNC reports the first measurement report, or the RNC ignores the first measurement report reported by the UE or the NodeB (the first measurement report received is not processed).

 The first protection timer and the second protection timer may be a fixed value, and may be configured in advance to the RNC, or may be configured to be configured in the high layer signaling to the UE or the NodeB.

 3A is a schematic flowchart of a handover method in a multi-carrier frequency system according to Embodiment 3 of the present invention. Compared with the previous embodiment, after the frequency corresponding to the primary carrier frequency is switched, the secondary carrier frequency is only used. The cell is unloaded or loaded to implement switching between the dual carrier frequency system and the single carrier frequency system. As shown in FIG. 3A, the handover method in the multiple carrier frequency system of this embodiment may include the following steps:

 Step 301: The RNC receives the first measurement report of the primary carrier frequency and the secondary carrier frequency, where the frequency corresponding to the primary carrier frequency is the first carrier frequency f1, and the frequency corresponding to the secondary carrier frequency is the second carrier frequency f2, and the serving cell of the current serving UE The first cell C11 operating on the first carrier frequency f1 and the second cell C21 operating on the second carrier frequency f2 are included;

In this step, when the UE moves initially, the serving cell includes the first cell C11 on the primary carrier frequency. And the second cell C21 on the secondary carrier frequency. During the movement of the UE, the UE or the NodeB detects the radio signal quality of the first carrier frequency f1 and the radio signal quality of the second carrier frequency f2 according to the first measurement control command sent by the RNC. When the UE moves to the edge of the first cell C11 and detects that the radio signal quality of the second carrier frequency f2 is better than the radio signal quality of the first carrier frequency, the UE or the NodeB reports the first measurement report to the RNC.

 Step 302: The RNC obtains the wireless signal quality of the first carrier frequency f1 and the wireless signal quality of the second carrier frequency f2 according to the foregoing first measurement report.

 Step 303: When the wireless signal quality of the second carrier frequency f2 is better than the wireless signal quality of the first carrier frequency f1, the RNC switches the frequency corresponding to the primary carrier frequency to the second carrier frequency f2, and the frequency corresponding to the secondary carrier frequency. Switch to the first carrier frequency l;

 In this step, the RNC triggers the switching of the primary carrier frequency, switches the frequency corresponding to the primary carrier frequency to the second carrier frequency f2, and switches the frequency corresponding to the secondary carrier frequency to the first carrier frequency 1, and the switched serving cell includes The second cell C21 on the primary carrier frequency and the first cell C11 on the secondary carrier frequency.

 Step 304: The RNC receives a third measurement report of the secondary carrier frequency, where the frequency corresponding to the secondary carrier frequency is the first carrier frequency f1, and the serving cell of the current serving UE includes the first cell C11 working on the first carrier frequency f1 and works in a second cell C21 on the second carrier frequency f2;

 In this step, the UE or the NodeB detects the radio signal quality of the first cell C11 according to the third measurement control command sent by the RNC. When the UE moves to the edge of the first cell C11, and detects that the radio signal quality of the first cell C11 is lower than the first threshold that can no longer serve the UE, the UE or the NodeB reports the third measurement report to the RNC.

 Step 305: The RNC acquires the radio signal quality of the first cell C11 according to the foregoing third measurement report.

 Step 306: When the radio signal quality of the first cell C11 is lower than the first threshold that can no longer serve the UE, the RNC removes the first cell C11 from the serving cell of the current serving UE.

 In this step, the RNC triggers the unloading of the secondary carrier frequency cell, and the secondary carrier frequency cell (the first cell C11) with poor radio signal quality is unloaded. After the handover, the serving cell only includes the second cell C21 on the primary carrier frequency. Can be seen as switching to a single carrier frequency system.

Step 307: The RNC receives a fourth measurement report of the primary carrier frequency and the first carrier frequency f1, where the frequency corresponding to the primary carrier frequency is the second carrier frequency f2, and the neighboring cell of the serving cell of the current serving UE includes the first working The third cell C12 on the carrier frequency f1;

 In this step, the UE or the NodeB detects the radio signal quality of the second carrier frequency f2 and the radio signal quality of the first carrier frequency l according to the fourth measurement control command sent by the RNC. When the UE moves to the edge of the second cell C21, and detects that the radio signal quality of the first carrier frequency l is better than the radio signal quality of the second carrier frequency f2, the UE or the NodeB reports the fourth measurement report to the RNC.

 Step 308: The RNC obtains the wireless signal quality of the second carrier frequency f2 and the wireless signal quality of the first carrier frequency according to the fourth measurement report.

 Step 309: When the radio signal quality of the first carrier frequency 1 is better than the radio signal quality of the second carrier frequency f2, the RNC switches the frequency corresponding to the primary carrier frequency to the first carrier frequency 1, and the serving cell of the current serving UE includes the work. a third cell C12 on the first carrier frequency 1;

 In this step, the RNC triggers the switching of the primary carrier frequency, and switches the frequency corresponding to the primary carrier frequency to the first carrier frequency f1, and the switched serving cell includes the third cell C12 on the primary carrier frequency.

 Step 310: The RNC receives the fifth measurement report of the second carrier frequency f2, where the relative cell of the serving cell of the current serving UE includes the fourth cell C22 operating on the second carrier frequency f2.

 In this step, the UE or the NodeB detects the radio signal quality of the fourth cell C22 according to the fifth measurement control command sent by the RNC. When the UE moves to the edge of the fourth cell C22, and detects that the wireless signal quality of the fourth cell C22 is higher than the second threshold that is allowed to serve the UE, the UE or the NodeB reports the fifth measurement report to the RNC.

 Step 311: The RNC acquires the radio signal quality of the fourth cell C22 according to the foregoing fifth measurement report.

 Step 312: When the radio signal quality of the fourth cell C22 is higher than the second threshold that is allowed to serve the UE, the fourth cell C22 is loaded into the serving cell of the current serving UE.

 In this step, the RNC triggers the loading of the secondary carrier frequency cell, and loads the secondary carrier frequency cell (fourth cell C22) with better radio signal quality, and the switched serving cell includes the third cell C12 and the auxiliary carrier on the primary carrier frequency. The fourth cell C22 in the frequency can be regarded as switching back to the dual carrier frequency system. FIG. 3B is a schematic diagram showing changes in wireless signal quality of a multi-carrier system in a handover method in a multi-carrier system according to Embodiment 3 of the present invention.

So far, the method of the embodiment of the present invention completes the handover of the serving cell in the process of UE mobility, The switching of the serving cell by the main carrier frequency switching and the unloading or loading of the secondary carrier frequency cell may not completely interrupt the communication process of the UE, improve the throughput during the UE mobile process, and reduce the call drop rate.

 Further, in order to prevent frequent switching of the primary carrier frequency, the RNC may start the third protection timer after step 303 and step 309 in this embodiment, and the RNC ignores the first measurement report before the third protection timer expires, and receives the The first measurement report and the fourth measurement report are not processed.

 The third protection timer may be a fixed value, and may be pre-configured to the RNC or configured to be sent to the UE or the NodeB by being carried in the high layer signaling.

 It should be noted that, for the foregoing method embodiments, for the sake of simple description, they are all expressed as a series of action combinations, but those skilled in the art should understand that the present invention is not limited by the described action sequence. Because in accordance with the present invention, certain steps may be performed in other sequences or concurrently. In addition, those skilled in the art should also understand that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

 In the above embodiments, the descriptions of the various embodiments are different, and the parts that are not detailed in a certain embodiment can be referred to the related descriptions of other embodiments.

 4 is a schematic structural diagram of a radio network controller according to Embodiment 4 of the present invention. As shown in FIG. 4, the RNC of this embodiment may include a first receiving module 41, a first obtaining module 42, and a first processing module 43. The first receiving module 41 receives the first measurement report of the primary carrier frequency and the secondary carrier frequency, the frequency corresponding to the primary carrier frequency is the first carrier frequency, and the frequency corresponding to the secondary carrier frequency is the second carrier frequency, and the first acquiring module 42 Acquiring the wireless signal quality of the first carrier frequency and the wireless signal quality of the second carrier frequency according to the first measurement report received by the first receiving module 41, when the quality of the wireless signal of the second carrier frequency is better than the foregoing When the wireless signal quality of the first carrier frequency is high, the first processing module 43 switches the frequency corresponding to the primary carrier frequency to the second carrier frequency, and switches the frequency corresponding to the secondary carrier frequency to the first carrier frequency.

 The functions of the first embodiment of the present invention, the RNC of the second embodiment of the present invention, and the functions of the RNC of the third embodiment of the present invention can be implemented by the RNC provided in this embodiment.

In this embodiment, the UE or the NodeB detects the radio signal quality of the first carrier frequency and the radio signal quality of the second carrier frequency according to the first measurement control command sent by the RNC, and detects the radio signal quality of the second carrier frequency. The first measurement report is reported to the RNC when the quality of the radio signal of the first carrier frequency is better. The first receiving module 41 receives the first measurement report reported by the UE or the NodeB, and the first The fetching module 42 obtains the radio signal quality of the first carrier frequency and the radio signal quality of the second carrier frequency according to the first measurement report received by the first receiving module 41. When the wireless signal quality of the second carrier frequency is better than the wireless signal quality of the first carrier frequency, the first processing module 43 switches the frequency corresponding to the primary carrier frequency to the second carrier frequency, and simultaneously switches the frequency corresponding to the secondary carrier frequency to On the first carrier frequency, the throughput during the UE mobile process is improved, and the call drop rate is reduced.

 Further, the RNC of this embodiment may further include a first protection module (not shown), configured to start the first protection timer, and control the first acquisition module to ignore the obtained before the first protection timer expires. The above first measurement report.

 FIG. 5 is a schematic structural diagram of a radio network controller according to Embodiment 5 of the present invention. As shown in FIG. 5, the RNC of this embodiment may further include a second receiving module 51 and a second. The module 52 and the second processing module 53 are obtained. The second receiving module 51 receives the second measurement report of the secondary carrier frequency, where the frequency corresponding to the secondary carrier frequency is the first carrier frequency, and the serving cell of the current serving terminal includes the first cell working on the first carrier frequency, current The neighboring cell of the serving cell of the serving terminal includes a third cell that operates on the first carrier frequency, and the second acquiring module 52 acquires the first cell according to the second measurement report received by the second receiving module 51. The wireless signal quality and the wireless signal quality of the third cell, when the wireless signal quality of the third cell is better than the wireless signal quality of the first cell, the second processing module 53 is deactivated from the serving cell currently serving the terminal. The first cell is loaded, and the third cell is loaded into a serving cell currently serving the terminal.

 In this embodiment, the first processing module 43 and the second processing module 53 complete the handover of the primary carrier frequency during the UE mobile process, and the unloading and loading of the secondary carrier frequency cell, which can implement the handover process of the serving cell of the UE. The communication process of the UE may not be completely interrupted, the throughput during the UE mobile process is improved, and the call drop rate is reduced.

 Further, the RNC of this embodiment may further include a second protection module (not shown), configured to start a second protection timer, and control the second acquisition module to ignore the obtained before the second protection timer expires. The above second measurement report.

FIG. 6 is a schematic structural diagram of a radio network controller according to Embodiment 6 of the present invention. As shown in FIG. 6, the RNC of the embodiment may further include a third receiving module 61 and a third. The module 62 and the third processing module 63 are obtained. The third receiving module 61 receives the third measurement report of the secondary carrier frequency, and the frequency corresponding to the secondary carrier frequency is the first carrier frequency, and the serving cell package of the current serving terminal The first cell that operates at the first frequency, the third acquiring module 62 obtains the wireless signal quality of the first cell according to the third measurement report received by the third receiving module 61, when the wireless of the first cell is used. When the signal quality is lower than the first threshold, the third processing module 63 removes the first cell from the serving cell currently serving the terminal.

 Further, the RNC of this embodiment may further include a fourth receiving module 64, a fourth obtaining module 65, and a fourth processing module 66. The fourth receiving module 64 receives the fourth measurement report of the primary carrier frequency and the first carrier frequency, and the frequency corresponding to the primary carrier frequency is the second carrier frequency, and the fourth acquiring module 65 receives the foregoing according to the fourth receiving module 64. a fourth measurement report, the wireless signal quality of the second carrier frequency and the wireless signal quality of the first carrier frequency are obtained, when the quality of the wireless signal of the first carrier frequency is better than the quality of the wireless signal of the second carrier frequency, The four processing module 66 switches the frequency corresponding to the primary carrier frequency to the first carrier frequency.

 Further, the RNC of this embodiment may further include a third protection module (not shown), configured to start a third protection timer, and control the fourth acquisition module to ignore the obtained before the third protection timer expires. The above fourth measurement report.

 Further, the RNC of this embodiment may further include a fifth receiving module 67, a fifth obtaining module 68, and a fifth processing module 69. The fifth receiving module 67 receives the fifth measurement report of the second carrier frequency, and the current cell serving the serving cell of the terminal currently includes the fourth cell working on the second carrier frequency, and the fifth acquiring module 68 is configured according to the fifth. The fifth measurement report received by the receiving module 67 acquires the radio signal quality of the fourth cell, and when the radio signal quality of the fourth cell is higher than the second threshold, the fifth processing module 69 loads the fourth cell. To the serving cell currently serving the above terminal.

 In this embodiment, the third processing module 63, the fourth processing module 66, and the fifth processing module 69 complete the handover of the primary carrier frequency, the unloading of the secondary carrier frequency cell, and the loading of the secondary carrier frequency cell during the UE mobile process. The communication process of the UE may not be completely interrupted during the handover process of the serving cell of the UE, the throughput during the UE mobile process is improved, and the call drop rate is reduced.

FIG. 7 is a schematic structural diagram of a handover system in a multiple carrier frequency system according to Embodiment 7 of the present invention. As shown in FIG. 7, the handover system in the multiple carrier frequency system of this embodiment may include a radio network controller 71. Receiving a first measurement report of the primary carrier frequency and the secondary carrier frequency, the frequency corresponding to the primary carrier frequency is the first carrier frequency, and the frequency corresponding to the secondary carrier frequency is the second carrier frequency, and obtaining the first carrier according to the first measurement report Frequency The wireless signal quality and the wireless signal quality of the second carrier frequency, when the wireless signal quality of the second carrier frequency is better than the wireless signal quality of the first carrier frequency, switching the frequency corresponding to the primary carrier frequency to the second The carrier frequency, and the frequency corresponding to the secondary carrier frequency are switched to the first carrier frequency.

 The functions of the first embodiment of the present invention, the RNC in the second embodiment of the present invention, and the RNC in the third embodiment of the present invention can be implemented by the radio network controller 71 in the handover system in the multi-carrier system provided in this embodiment.

 A person skilled in the art can understand that all or part of the steps of implementing the above method embodiments may be completed by using hardware related to program instructions, and the foregoing program may be stored in a computer readable storage medium, and the program is executed when executed. The foregoing steps include the steps of the foregoing method embodiments; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

 It should be noted that the above embodiments are only for explaining the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: The technical solutions described in the foregoing embodiments are modified, or some of the technical features are equivalently replaced. The modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

Rights request  A switching method in a multi-carrier frequency system, comprising:  Receiving a first measurement report of the primary carrier frequency and the secondary carrier frequency, the frequency corresponding to the primary carrier frequency is a first carrier frequency, and the frequency corresponding to the secondary carrier frequency is a second carrier frequency;  Obtaining, according to the first measurement report, a radio signal quality of the first carrier frequency and a radio signal quality of the second carrier frequency;  When the quality of the wireless signal of the second carrier frequency is better than the quality of the wireless signal of the first carrier frequency, switching the frequency corresponding to the primary carrier frequency to the second carrier frequency, and using the secondary carrier frequency The corresponding frequency is switched to the first carrier frequency.  The method according to claim 1, wherein the switching the frequency corresponding to the primary carrier frequency to the second carrier frequency comprises: starting a first protection timer, where the first protection The first measurement report is ignored before the timer expires.  The method according to claim 1 or 2, wherein the frequency corresponding to the primary carrier frequency is switched to the second carrier frequency, and the frequency corresponding to the secondary carrier frequency is switched to the After the first carrier frequency, it also includes:  Receiving a second measurement report of the secondary carrier frequency, where the frequency corresponding to the secondary carrier frequency is the first carrier frequency, and the serving cell currently serving the terminal includes the first cell working on the first carrier frequency, the current service station The neighboring cell of the serving cell of the terminal includes a third cell working on the first carrier frequency; acquiring, according to the second measurement report, the wireless signal quality of the first cell and the wireless of the third cell Signal quality;  When the radio signal quality of the third cell is better than the radio signal quality of the first cell, the first cell is deactivated from a serving cell currently serving the terminal, and the third cell is loaded to Currently serving in the serving cell of the terminal.  The method according to claim 3, wherein the first cell is deactivated from a serving cell currently serving the terminal, and the third cell is loaded to a terminal currently serving the terminal. The serving cell then includes: starting a second protection timer, ignoring the second measurement report before the second protection timer expires. The method according to claim 1 or 2, wherein the frequency corresponding to the primary carrier frequency is switched to the second carrier frequency, and the frequency corresponding to the secondary carrier frequency is switched to the Narrative After a carrier frequency, it also includes:  Receiving a third measurement report of the secondary carrier frequency, the frequency corresponding to the secondary carrier frequency is a first carrier frequency, and the serving cell currently serving the terminal includes a first cell working on the first carrier frequency;  Obtaining, according to the third measurement report, a radio signal quality of the first cell;  When the radio signal quality of the first cell is lower than the first threshold, the first cell is deactivated from a serving cell currently serving the terminal.  The method according to claim 5, wherein the removing the first cell from the serving cell currently serving the terminal further includes:  Receiving a fourth measurement report of the primary carrier frequency and the first carrier frequency, wherein the frequency corresponding to the primary carrier frequency is a second carrier frequency;  Acquiring, according to the fourth measurement report, the wireless signal quality of the second carrier frequency and the wireless signal quality of the first carrier frequency;  And when the wireless signal quality of the first carrier frequency is better than the wireless signal quality of the second carrier frequency, switching the frequency corresponding to the primary carrier frequency to the first carrier frequency.  The method according to claim 6, wherein the switching the frequency corresponding to the primary carrier frequency to the first carrier frequency comprises: starting a third protection timer, where the third protection The fourth measurement report is ignored before the timer expires.  The method according to claim 6 or 7, wherein the switching the frequency corresponding to the primary carrier frequency to the first carrier frequency further comprises:  Receiving a fifth measurement report of the second carrier frequency, the relative cell currently serving the serving cell of the terminal includes a fourth cell working on the second carrier frequency;  Obtaining, according to the fifth measurement report, a radio signal quality of the fourth cell;  When the radio signal quality of the fourth cell is higher than the second threshold, the fourth cell is loaded into a serving cell currently serving the terminal.  9. A radio network controller, comprising:  a first receiving module, configured to receive a first measurement report of a primary carrier frequency and a secondary carrier frequency, where a frequency corresponding to the primary carrier frequency is a first carrier frequency, and a frequency corresponding to the secondary carrier frequency is a second carrier frequency; a first acquiring module, configured to acquire, according to the first measurement report, a radio signal quality of the first carrier frequency and a radio signal quality of the second carrier frequency; a first processing module, configured to: when the quality of the wireless signal of the second carrier frequency is better than the quality of the wireless signal of the first carrier frequency, switch the frequency corresponding to the primary carrier frequency to the second carrier frequency, And switching a frequency corresponding to the secondary carrier frequency to the first carrier frequency.  The radio network controller according to claim 9, further comprising a first protection module, configured to start a first protection timer, and control the first acquisition before the first protection timer expires The module ignores the first measurement report.  The radio network controller according to claim 9 or 10, further comprising: a second receiving module, configured to receive a second measurement report of the secondary carrier frequency, where the frequency corresponding to the secondary carrier frequency is a carrier frequency, the serving cell currently serving the terminal includes a first cell operating on the first carrier frequency, and the neighboring cell currently serving the serving cell of the terminal includes working on the first carrier frequency Third cell;  a second acquiring module, configured to acquire, according to the second measurement report, a radio signal quality of the first cell and a radio signal quality of the third cell;  a second processing module, configured to: when the radio signal quality of the third cell is better than the radio signal quality of the first cell, remove the first cell from a serving cell currently serving the terminal, and The third cell is loaded into a serving cell currently serving the terminal.  The radio network controller according to claim 11, further comprising a second protection module, configured to start a second protection timer, and control the second acquisition before the second protection timer expires The module ignores the second measurement report.  The radio network controller according to claim 9 or 10, further comprising:  a third receiving module, configured to receive a third measurement report of the secondary carrier frequency, where the frequency corresponding to the secondary carrier frequency is a first carrier frequency, and the serving cell currently serving the terminal includes a first working at the first frequency Community  a third acquiring module, configured to acquire, according to the third measurement report, a radio signal quality of the first cell;  And a third processing module, configured to: when the radio signal quality of the first cell is lower than a first threshold, offload the first cell from a serving cell currently serving the terminal. The radio network controller according to claim 13, further comprising: a fourth receiving module, configured to receive a fourth measurement report of the primary carrier frequency and the first carrier frequency, where the frequency corresponding to the primary carrier frequency is a second carrier frequency;  a fourth acquiring module, configured to acquire, according to the fourth measurement report, a radio signal quality of the second carrier frequency and a radio signal quality of the first carrier frequency;  The fourth processing module is configured to switch the frequency corresponding to the primary carrier frequency to the first carrier frequency when the quality of the wireless signal of the first carrier frequency is better than the quality of the wireless signal of the second carrier frequency.  The radio network controller according to claim 14, further comprising a third protection module, configured to start a third protection timer, and control the fourth acquisition before the third protection timer expires The module ignores the fourth measurement report.  The radio network controller according to claim 14 or 15, further comprising:  a fifth receiving module, configured to receive a fifth measurement report of the second carrier frequency, where the relative cell currently serving the serving cell of the terminal includes a fourth cell working on the second carrier frequency;  a fifth acquiring module, configured to acquire, according to the fifth measurement report, a radio signal quality of the fourth cell;  And a fifth processing module, configured to: when the wireless signal quality of the fourth cell is higher than a second threshold, load the fourth cell into a serving cell currently serving the terminal.  A switching system in a multi-carrier system, comprising: a radio network controller, configured to receive a first measurement report of a primary carrier frequency and a secondary carrier frequency, wherein the frequency corresponding to the primary carrier frequency is first a carrier frequency, the frequency corresponding to the secondary carrier frequency is a second carrier frequency, and the wireless signal quality of the first carrier frequency and the wireless signal quality of the second carrier frequency are obtained according to the first measurement report. When the quality of the wireless signal of the second carrier frequency is better than the quality of the wireless signal of the first carrier frequency, switching the frequency corresponding to the primary carrier frequency to the second carrier frequency, and corresponding to the secondary carrier frequency The frequency is switched to the first carrier frequency.