CN106658553B - Mobile terminal and inter-system cell measuring method thereof - Google Patents
Mobile terminal and inter-system cell measuring method thereof Download PDFInfo
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- CN106658553B CN106658553B CN201510730763.6A CN201510730763A CN106658553B CN 106658553 B CN106658553 B CN 106658553B CN 201510730763 A CN201510730763 A CN 201510730763A CN 106658553 B CN106658553 B CN 106658553B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
A mobile terminal and a method for measuring a cell of a different system are provided. The method comprises the following steps: and controlling the value range of the interval between the ith inter-system cell measurement and the (i + 1) th inter-system cell measurement of the mobile terminal to be [90 frames, 150 frames ], wherein i is a positive integer. By applying the method, the occurrence of network drop of the mobile terminal in the DRX state caused by overlong measurement intervals of the cells of the different systems can be effectively reduced.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a mobile terminal and a method for measuring a cell of a different system thereof.
Background
In a mobile communication system, after a mobile terminal is powered on, the mobile terminal resides in a suitable serving cell through a cell initial search process and gradually establishes a wireless communication process. Meanwhile, the mobile terminal also needs to detect a cell (referred to as a "neighbor cell" for short) adjacent to the serving cell, and continuously perform tracking measurement on the communication quality of the detected neighbor cell so as to prepare for cell reselection and handover. The process of detecting the neighboring cell and performing tracking measurement by the mobile terminal is called cell measurement.
According to The 3rd Generation Partnership Project (3 GPP), when a mobile terminal performs cell measurement, The cell measurement mainly includes measuring a cell under a communication system corresponding to a current serving cell and measuring a cell under an inter-system.
However, when the current mobile terminal measures a cell of a different system, a network drop rate in a Discontinuous Reception (DRX) state is high, which results in poor user experience.
Disclosure of Invention
The invention aims to solve the problem that the mobile terminal has high network drop rate when measuring the cells of different systems.
In order to solve the above problem, an embodiment of the present invention provides a method for measuring a cell of a mobile terminal in different systems, where the method includes:
and controlling the value range of the interval between the ith inter-system cell measurement and the (i + 1) th inter-system cell measurement of the mobile terminal to be [90 frames, 150 frames ], wherein i is a positive integer.
Optionally, the iso-system comprises at least one of: an LTE system and a GSM system.
Optionally, the interval between the ith measurement and the (i + 1) th measurement is 120 frames.
Optionally, when the inter-system to be measured is an LTE system, the method further includes:
and controlling the mobile terminal to immediately measure the inter-system cell to be measured after the inter-frequency measurement of the nth DRX period.
Optionally, the controlling the mobile terminal to measure the inter-system cell to be measured immediately after the inter-frequency measurement in the nth DRX cycle further includes:
when the difference between the ending time of the nth DRX period of the mobile terminal and the ending time of the pilot frequency measurement in the nth DRX period is smaller than a preset value, the mobile terminal is controlled to perform partial measurement on a different system cell to be measured after the pilot frequency measurement in the nth DRX period, and perform measurement on other parts of the different system cell in the subsequent DRX period, wherein the preset value is a pilot frequency measurement capability value of the mobile terminal in the current mode.
Optionally, the preset value is 6 frames.
Optionally, when the heterogeneous system includes an LTE system and a GSM system, the cell of the LTE system is measured first, and then the cell of the GSM system is measured.
An embodiment of the present invention further provides a mobile terminal, where the mobile terminal includes: the first control unit is suitable for controlling the value range of the interval between the ith inter-system cell measurement and the (i + 1) th inter-system cell measurement of the mobile terminal to be [90 frames, 150 frames ], wherein i is a positive integer.
Optionally, the iso-system comprises at least one of: an LTE system and a GSM system.
Optionally, the first control unit controls an interval between the ith measurement and the (i + 1) th measurement of the mobile terminal to be 120 frames.
Optionally, the mobile terminal further includes:
and the second control unit is suitable for controlling the mobile terminal to measure the inter-system cell to be measured immediately after the inter-frequency measurement of the nth DRX period when the inter-system to be measured is an LTE system.
Optionally, the second control unit comprises:
and the control subunit is adapted to control the mobile terminal to perform partial measurement on a different system cell to be measured after the different frequency measurement in the nth DRX cycle and perform measurement on other parts of the different system cell in the subsequent DRX cycle when a difference between an end time of the nth DRX cycle and an end time of the different frequency measurement in the nth DRX cycle is smaller than a preset value, where the preset value is a different frequency measurement capability value in a current mode of the mobile terminal.
Optionally, the preset value is 6 frames.
Optionally, the mobile terminal further includes: and the measurement sequence adjusting unit is suitable for controlling the mobile terminal to measure the LTE system cell and then the GSM system cell when the different systems to be measured comprise the LTE system and the GSM system.
Compared with the prior art, the technical scheme of the invention at least has the following advantages:
by controlling the value range of the interval between the ith inter-system cell measurement and the (i + 1) th inter-system cell measurement of the mobile terminal to be [90 frames, 150 frames ], the occurrence of network drop in the DRX state of the mobile terminal caused by overlong interval of inter-system cell measurement can be effectively reduced.
Further, when the difference between the end time of the nth DRX period of the mobile terminal and the end time of receiving downlink data in the nth DRX period is smaller than a preset value, the mobile terminal is controlled to perform partial measurement on a cell corresponding to an inter-system frequency point to be measured in the nth DRX period and after receiving the downlink data, and perform measurement on other parts of the cell corresponding to the inter-system frequency point in the subsequent DRX period, so that the idle period in the nth DRX period can be utilized to the maximum extent, and the power consumption of the multi-mode mobile terminal is reduced.
Drawings
Fig. 1 is a diagram illustrating a DRX cycle according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention.
Detailed Description
At present, when a mobile terminal measures a different system cell according to a 3GPP protocol specification, in some cases, the measurement interval between two adjacent different system cells is as long as several hundred frames, and therefore, when the mobile terminal is in a DRX state, under an environment with a poor current communication mode signal, a network drop condition caused by an excessively long measurement interval time often occurs.
In view of the above problems, embodiments of the present invention provide a method for measuring inter-system cell of a mobile terminal, where the method controls a value range of an interval between an i-th inter-system cell measurement and an i + 1-th inter-system cell measurement of the mobile terminal to be [90 frames, 150 frames ], so that occurrence of a network drop condition in a DRX state of the mobile terminal due to an excessively long inter-system cell measurement interval can be effectively reduced.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
The embodiment of the invention provides a method for measuring different system cells of a mobile terminal, which comprises the following steps: step s11 (not shown), controlling the value range of the interval between the ith inter-system cell measurement and the (i + 1) th inter-system cell measurement of the mobile terminal to be [90 frames, 150 frames ], where i is a positive integer.
In the embodiment of the present invention, the mobile terminal refers to a computer device that can be used in a mobile process, and includes, but is not limited to, a mobile phone, a notebook, a tablet computer, and a vehicle-mounted computer. The mobile terminal may support only one communication mode, may support two communication modes, and may also support three or more communication modes as long as the supported communication modes include an LTE mode. No particular limitation is imposed on the present invention regardless of the number of communication modes that the mobile terminal can support, and the present invention is within the scope of the present invention.
In a specific implementation, except for a communication system corresponding to a current communication mode, other communication systems supported by the mobile terminal are all heterogeneous systems. For example, the heterogeneous system may be Long Term Evolution (LTE), Wireless Local Area Network (WLAN), Global system for Mobile communication (GSM), Time Division-Synchronous Code Division Multiple Access (TD-SCDMA), Wideband Code Division Multiple Access (WCDMA), Code Division Multiple Access (CDMA) 2000, and the like. In an embodiment of the present invention, the heterogeneous system at least includes one of an LTE system and a GSM system, and the current communication mode of the mobile terminal may be WCDMA.
When the mobile terminal resides in a WCDMA CELL, in a CELL dedicated channel (CELL-FACH) state, on one hand, the relevant information of a DRX cycle can be obtained by receiving a system message sent by a base station, and high speed downlink shared channel (HS-DSCH) data reception is performed in each DRX cycle, at this time, the mobile terminal enters an enhanced CELL dedicated channel (EFACH) DRX state in the CELL-FACH state. The relevant information of the DRX period comprises information such as the length of the DRX period and the length of data received in each DRX period. In each DRX period, the mobile terminal needs to turn on an antenna to receive data. On the other hand, the cell information to be measured can be obtained and measured through the measurement message sent by the base station, so as to perform cell reselection or cell handover in the following.
According to the 3GPP specification, when the mobile terminal is in the EFACH DRX state, in some cases, the interval between two adjacent inter-system cell measurements may be as long as several hundred frames, which causes a network drop situation to easily occur in an environment with a weak current mode signal when the mobile terminal is in the DRX state. For the problem, in a specific implementation, an interval between the ith inter-system cell measurement and the (i + 1) th inter-system cell measurement is set between [90 frames, 150 frames ], so that the occurrence of a network drop condition caused by an excessively long interval between two adjacent inter-system cell measurements of the mobile terminal is reduced. For example, whether the inter-system is the LTE system or the GSM system, the interval between the ith inter-system cell measurement and the (i + 1) th inter-system cell measurement may be 120 frames, that is, the inter-system cell measurement may be performed every 120 frames.
It should be noted that, in the specific implementation, when the different system to be measured includes both an LTE system and a GSM system, the mobile terminal may be controlled to measure the LTE system cell first, and then measure the GSM system cell, so that the mobile terminal may be switched from the current state to the LTE system in time to perform a high-speed data download service, and the mobile terminal may be switched to the GSM system in time to perform a voice service in an environment where a signal of the current state is weak, thereby reducing a network drop rate of the mobile terminal.
Currently, no specific specification has been given in 3GPP on how to schedule measurements of inter-system cells when the mobile terminal is in the EFACH DRX state in the fractional mode, including the GSM mode. In the embodiment of the present invention, in order to reduce the power consumption of the mobile terminal, when the inter-system to be measured is an LTE system, cell measurement may be performed using an idle period of each DRX cycle, that is, a period of time during which data is not received, so as to maximally use the idle period in the nth DRX cycle.
Specifically, in the nth DRX cycle, after the mobile terminal is controlled to measure the cell corresponding to the current communication system, the mobile terminal immediately measures the cell of the different system. The mobile terminal measures the cells under the current communication system, and comprises the steps of measuring the cells with the same frequency points as the current service cell, namely measuring the same frequency, and measuring the cells with different frequency points as the current service cell, namely measuring the different frequency, wherein the different frequency measurement is carried out after the same frequency measurement. Therefore, in the embodiment of the present invention, the mobile terminal is controlled to measure the inter-system cell immediately after the inter-frequency measurement in the nth DRX cycle is completed.
Further, when the difference between the end time of the nth DRX cycle of the mobile terminal and the end time of the inter-frequency measurement in the nth DRX cycle is smaller than a preset value, the mobile terminal cannot complete the complete measurement of one inter-system cell after the inter-frequency measurement in the nth DRX cycle, so that the mobile terminal can be controlled to perform partial measurement on one inter-system cell to be measured after the inter-frequency measurement in the nth DRX cycle, and perform measurement on other parts of the inter-system cell in the subsequent DRX cycle.
And the preset value is a measurement capability value of the heterogeneous system cell in the current mode of the mobile terminal. For example, in the WCDMA mode, the inter-system cell measurement capability value of the mobile terminal is 8 frames. The partial measurement of the different system cell can be one or two of the three stages of time slot synchronization, frame synchronization and scrambling code group identification and primary scrambling code identification. For example, after the pilot frequency measurement in the nth DRX cycle, the measurement process of slot synchronization and frame synchronization may be performed on the inter-system cell, and after the pilot frequency measurement in the n +1 DRX cycle, the measurement process of primary scrambling code identification may be performed on the inter-system cell.
For example, as shown in fig. 1, the horizontal axis is a time increase direction. In fig. 1, the number of DRX cycles of the mobile terminal in the current state is N, wherein the 1 st DRX cycle is DRX1The length of the 2 nd DRX period is DRX2… …, the length of the nth DRX cycle is DRXn… …, the length of the Nth DRX cycle is DRXN. Length of DRX in nth DRX periodnThe time length of pilot frequency measurement is Bn. Wherein N is a positive integer, and N is more than or equal to 1 and less than or equal to N. N DRX cycle DRXnI.e., (t2-t1), the end time of inter-frequency measurement in the nth DRX cycle is t3,
according to the 3GPP specification, the length of the nth DRX period is DRXnIt may be 4 frames, 8 frames, 16 frames or 32 frames, where 1 frame equals 10 ms.
When the difference between the end time t2 of the nth DRX cycle and the end time t3 of the inter-frequency measurement in the nth DRX cycle is smaller than the preset value, the mobile terminal cannot complete the measurement of one LTE cell in the time period from t3 to t2, at this time, the partial measurement of one LTE cell can be completed in the time period from t3 to t2, and the measurement of the other parts of the LTE cell can be completed in the subsequent DRX cycle or cycles.
Therefore, in the embodiment of the present invention, by controlling the value range of the interval between the ith inter-system cell measurement and the (i + 1) th inter-system cell measurement of the mobile terminal to be [90 frames, 150 frames ], the method can effectively reduce the occurrence of the network drop of the mobile terminal caused by the overlong interval between the inter-system cell measurements.
In order to make those skilled in the art better understand and implement the present invention, the following respectively describes the mobile terminals corresponding to the above-mentioned inter-system cell measurement method of the mobile terminal in detail.
As shown in fig. 2, an embodiment of the present invention provides a mobile terminal 20, where the mobile terminal 20 includes: a first control unit 21. The first control unit 21 is adapted to control a value range of an interval between an i-th inter-system cell measurement and an i + 1-th inter-system cell measurement of the mobile terminal to be [100 frames, 130 frames ], where i is a positive integer. For example, the first control unit 21 may control the interval between the ith measurement and the (i + 1) th measurement of the mobile terminal to be 120 frames.
In a specific implementation, the heterogeneous system may only include an LTE system, may also include only a GSM system, and may also include both the LTE system and the GSM system. When the heterogeneous system to be measured includes both the LTE system and the GSM system, the mobile terminal 20 may further include: a measurement order adjustment unit 22. The measurement sequence adjusting unit 22 is adapted to control the mobile terminal 20 to measure the LTE system cell first and then measure the GSM system cell when the different systems to be measured include the LTE system and the GSM system.
When the heterogeneous system to be measured is an LTE system, the mobile terminal 20 may further include: a second control unit 23. The second control unit 23 is adapted to control the mobile terminal 20 to measure the inter-system cell to be measured immediately after the inter-frequency measurement of the nth DRX cycle when the inter-system to be measured is an LTE system.
Further, the second control unit 23 may include: a control subunit (not shown). The control subunit is adapted to control the mobile terminal to perform partial measurement on a different system cell to be measured after performing different frequency measurement in the nth DRX cycle and perform measurement on other parts of the different system cell in the subsequent DRX cycle when a difference between an end time of the nth DRX cycle and an end time of the different frequency measurement in the nth DRX cycle is smaller than a preset value, where the preset value is a different frequency measurement capability value in a current mode of the mobile terminal.
Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by associated hardware instructed by a program, which may be stored in a computer-readable storage medium, and the storage medium may include: ROM, RAM, magnetic or optical disks, and the like.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (8)
1. A method for measuring inter-system cells of a mobile terminal is characterized by comprising the following steps:
controlling the value range of an interval between the ith inter-system cell measurement and the (i + 1) th inter-system cell measurement of the mobile terminal to be [90 frames, 150 frames ], wherein i is a positive integer;
controlling the mobile terminal to measure the inter-system cell to be measured immediately after the inter-frequency measurement of the nth DRX period, comprising the following steps: when the difference between the ending time of the nth DRX period of the mobile terminal and the ending time of the pilot frequency measurement in the nth DRX period is smaller than a preset value, controlling the mobile terminal to perform partial measurement on a different system cell to be measured after the pilot frequency measurement in the nth DRX period, and performing measurement on other parts of the different system cell in the subsequent DRX period, wherein the preset value is a pilot frequency measurement capability value of the mobile terminal in the current mode;
wherein the different system to be measured is an LTE system.
2. The inter-system cell measurement method for the mobile terminal according to claim 1, wherein the interval between the ith measurement and the (i + 1) th measurement is 120 frames.
3. The method for inter-system cell measurement of a mobile terminal according to claim 1, wherein the predetermined value is 6 frames.
4. The method for inter-system cell measurement of a mobile terminal according to claim 1, wherein the measurement is performed on the LTE system cell first, and then on the GSM system cell.
5. A mobile terminal, comprising:
the first control unit is suitable for controlling the value range of the interval between the ith inter-system cell measurement and the (i + 1) th inter-system cell measurement of the mobile terminal to be [90 frames, 150 frames ], wherein i is a positive integer;
the second control unit is suitable for controlling the mobile terminal to measure the inter-system cell to be measured immediately after the inter-frequency measurement of the nth DRX period when the inter-system to be measured is an LTE system;
the second control unit includes: the control subunit is adapted to control the mobile terminal to perform partial measurement on a different system cell to be measured after performing different frequency measurement in the nth DRX cycle and perform measurement on other parts of the different system cell in the subsequent DRX cycle when a difference between an end time of the nth DRX cycle and an end time of the different frequency measurement in the nth DRX cycle is smaller than a preset value, where the preset value is a different frequency measurement capability value in a current mode of the mobile terminal;
wherein the different system to be measured is an LTE system.
6. The mobile terminal of claim 5, wherein the first control unit controls the mobile terminal to have an interval of 120 frames between the ith measurement and the (i + 1) th measurement.
7. The mobile terminal of claim 5, wherein the preset value is 6 frames.
8. The mobile terminal of claim 5, further comprising: and the measurement sequence adjusting unit is suitable for controlling the mobile terminal to measure the LTE system cell firstly and then measure the GSM system cell.
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| CN102740349A (en) * | 2011-04-07 | 2012-10-17 | 联发科技（新加坡）私人有限公司 | Terminal measurement scheduling method and device |
| CN104160754A (en) * | 2012-01-10 | 2014-11-19 | 苹果公司 | Methods and apparatus for managing radio measurements during discontinuous reception |
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| CN101610538B (en) * | 2009-07-21 | 2011-06-01 | 北京天碁科技有限公司 | Measurement scheduling method and device of terminal in long term evolution system |
| CN103220702B (en) * | 2012-01-19 | 2016-11-02 | 华为技术有限公司 | A kind of alien-frequency district measuring method, device and system |
| CN103313295A (en) * | 2012-03-16 | 2013-09-18 | 华为技术有限公司 | Method and device for executing inter-frequency inter-system neighbor cell measurement |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102740349A (en) * | 2011-04-07 | 2012-10-17 | 联发科技（新加坡）私人有限公司 | Terminal measurement scheduling method and device |
| CN104160754A (en) * | 2012-01-10 | 2014-11-19 | 苹果公司 | Methods and apparatus for managing radio measurements during discontinuous reception |
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