CN114143844A - Cell reselection method, device, chip and module equipment - Google Patents

Cell reselection method, device, chip and module equipment Download PDF

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Publication number
CN114143844A
CN114143844A CN202111426077.1A CN202111426077A CN114143844A CN 114143844 A CN114143844 A CN 114143844A CN 202111426077 A CN202111426077 A CN 202111426077A CN 114143844 A CN114143844 A CN 114143844A
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cell
candidate
candidate cell
signal strength
serving cell
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CN114143844B (en
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郭雪莲
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Unisoc Chongqing Technology Co Ltd
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Unisoc Chongqing Technology Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0061—Transmission or use of information for re-establishing the radio link of neighbour cell information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/318—Received signal strength
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/0085—Hand-off measurements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • 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
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0248—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal dependent on the time of the day, e.g. according to expected transmission activity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/28—Discontinuous transmission [DTX]; Discontinuous reception [DRX]
    • 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

The application discloses a cell reselection method, a cell reselection device, a chip and module equipment, wherein the method comprises the following steps: the terminal equipment measures the cell signal intensity of at least one candidate cell; if a first candidate cell and a serving cell in the at least one candidate cell meet a first condition within a first time, the terminal device switches to the first candidate cell, the serving cell is a cell where the terminal device currently resides, and the first condition is related to cell signal strength of the first candidate cell and cell signal strength of the serving cell. By adopting the method described by the application, the terminal equipment can be prevented from frequently initiating network reselection.

Description

Cell reselection method, device, chip and module equipment
Technical Field
The present invention relates to the field of communications, and in particular, to a method, an apparatus, a chip, and a module device for cell reselection.
Background
Due to network deployment of an operator, at an overlapping place of a Long Term Evolution (LTE) cell, when a User Equipment (UE) in an idle state performs neighbor cell measurement, it is found that a neighbor cell satisfies a reselection condition, that is, the UE is triggered to reselect from a cell 1 (a main cell) to a cell 2 (a neighbor cell). When the cell 2 is successfully reselected, the terminal device performs neighbor cell measurement on the cell 2, and if the cell 1 also meets the reselection condition, the reselection of the UE from the cell 2 to the cell 1 is triggered. At this time, the network environment where the UE is located is the ping-pong reselection network environment, and if the UE is in a static scene and the location does not move, the UE will continue to perform cell reselection and frequently read system information, which affects power consumption and user experience.
Disclosure of Invention
The application provides a cell reselection method, a cell reselection device, a chip and module equipment, which are beneficial to preventing terminal equipment from entering a ping-pong reselection network environment and frequently initiating cell reselection.
In a first aspect, the present application provides a cell reselection method, including: the terminal equipment measures the cell signal intensity of at least one candidate cell; if a first candidate cell in the at least one candidate cell meets a first condition and a serving cell meets a second condition within a first time, the terminal device reselects to the first candidate cell, the serving cell is a cell where the terminal device currently resides, and the first condition and the second condition are both related to cell signal strength of the first candidate cell and cell signal strength of the serving cell.
In one possible implementation, the at least one candidate cell is a plurality of candidate cells, and the method further includes: the terminal device selects a first candidate cell from at least one candidate cell based on cell signal strengths of the candidate cells and priorities of the candidate cells.
In one possible implementation, the first condition is: when the priority of the first candidate cell is high priority and the first candidate cell and the serving cell belong to different frequency points, the cell signal intensity of the first candidate cell is greater than a first threshold; when the priority of the first candidate cell is equal to the priority, or when the first candidate cell and the serving cell belong to the same frequency point, a first numerical value corresponding to the first candidate cell is greater than a first numerical value corresponding to the serving cell, and the first numerical value is determined based on the cell signal strength and the cell signal offset; when the priority of the first candidate cell is low priority and the first candidate cell and the serving cell belong to different frequency points, the cell signal intensity of the first candidate cell is greater than a second threshold and the cell signal intensity of the serving cell is less than a third threshold; the second condition is one or more of the following conditions: when the priority of the service cell is high priority and the service cell and the first candidate cell belong to different frequency points, the signal intensity of the service cell is less than or equal to a first threshold; when the priority of the serving cell is equal to the priority, or when the first candidate cell and the serving cell belong to the same frequency point, the first numerical value corresponding to the serving cell is smaller than or equal to the first numerical value corresponding to the first candidate cell; when the priority of the serving cell is low priority and the first candidate cell and the serving cell belong to different frequency points, the cell signal strength of the serving cell is less than or equal to a second threshold, or the cell signal strength of the first candidate cell is greater than or equal to a third threshold; the cell signal strength of the serving cell is less than the cell signal strength of the first candidate cell.
In one possible implementation, the terminal device has camped on a first candidate cell; and the second value corresponding to the first candidate cell is greater than 0, and the second value is calculated based on the reference signal received power RSRP and the reference signal received quality RSRQ of the first candidate cell.
In one possible implementation, the candidate cell satisfies the third condition and the serving cell satisfies the fourth condition during the reselection time. The third condition is: when the priority of the candidate cell is high priority and the candidate cell and the serving cell belong to different frequency points, the cell signal intensity of the candidate cell is greater than a first threshold; when the priority of the candidate cell is equal to the priority, or when the candidate cell and the serving cell belong to the same frequency point, a first numerical value corresponding to the candidate cell is larger than a first numerical value corresponding to the serving cell, and the first numerical value is determined based on the cell signal strength and the cell signal offset; when the priority of the candidate cell is low priority and the candidate cell and the serving cell belong to different frequency points, the cell signal intensity of the candidate cell is greater than a second threshold and the cell signal intensity of the serving cell is less than a third threshold; the fourth condition is one of the following conditions: when the priority of the service cell is high priority and the service cell and the first candidate cell belong to different frequency points, the signal intensity of the service cell is less than or equal to a first threshold; when the priority of the serving cell is equal to the priority, or when the candidate cell and the serving cell belong to the same frequency point, the first numerical value corresponding to the serving cell is smaller than or equal to the first numerical value corresponding to the candidate cell; when the priority of the serving cell is low priority and the candidate cell and the serving cell belong to different frequency points, the cell signal strength of the serving cell is less than or equal to a second threshold, or the cell signal strength of the candidate cell is greater than or equal to a third threshold; the cell signal strength of the serving cell is less than the cell signal strength of the candidate cell.
In one possible implementation, the terminal device has camped on the candidate cell; and the second value corresponding to the candidate cell is greater than 0, and the second value is calculated based on the reference signal received power RSRP and the reference signal received quality RSRQ of the candidate cell.
In one possible implementation, the first time is determined based on a reselection time and a discontinuous reception, DRX, cycle time.
In a possible implementation manner, when the terminal device measures the cell signal strength corresponding to at least one candidate cell, the method includes: when the cell signal strength of the serving cell is less than or equal to a fourth threshold, the terminal device measures the cell signal strength corresponding to at least one candidate cell; the method further comprises the following steps: and when the cell signal strength of the serving cell is greater than the fourth threshold, the terminal device does not measure the cell signal strength corresponding to the at least one candidate cell.
In a second aspect, the present application provides a communication device comprising a measurement unit and a reselection unit, wherein: a measurement unit for measuring cell signal strength of at least one candidate cell; and a reselecting unit, configured to reselect to a first candidate cell if, in a first time, the first candidate cell in the at least one candidate cell satisfies a first condition and the serving cell satisfies a second condition, where the serving cell is a cell in which the terminal device currently resides, and both the first condition and the second condition are related to a cell signal strength of the first candidate cell and a cell signal strength of the serving cell.
The third aspect, the present application provides a module device, which includes a communication module, a power module, a storage module and a chip module, wherein: the power supply module is used for providing electric energy for the module equipment; the storage module is used for storing data and instructions; the communication module is used for carrying out internal communication of the module equipment or is used for carrying out communication between the module equipment and external equipment; the chip module is used for: measuring cell signal strength of at least one candidate cell; if a first candidate cell in the at least one candidate cell meets a first condition and a serving cell meets a second condition within a first time, reselecting to the first candidate cell, wherein the serving cell is a cell where the terminal device currently resides, and the first condition and the second condition are both related to cell signal strength of the first candidate cell and cell signal strength of the serving cell.
In a fourth aspect, the present application provides a communications apparatus comprising a processor, a memory, and a transceiver; a transceiver for receiving a channel or signal or transmitting a channel or signal; a memory for storing a computer program; a processor for calling a computer program from memory to perform a method as described in the first aspect and possible implementations thereof.
In a fifth aspect, the present application provides a computer-readable storage medium having stored thereon a computer program which, when run on a communication apparatus, causes the communication apparatus to perform the method as described in the first aspect and its possible implementation.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic diagram of a network architecture provided in an embodiment of the present application;
fig. 2 is a schematic flowchart of a network handover method according to an embodiment of the present application;
fig. 3 is a schematic diagram of a DRX cycle structure according to an embodiment of the present disclosure;
fig. 4 is a schematic diagram of a network handover procedure provided in an embodiment of the present application;
fig. 5 is a schematic structural diagram of a communication device according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of another communication device according to an embodiment of the present application
Fig. 7 is a schematic structural diagram of a module apparatus according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used in the following embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. As used in the specification of the present application and the appended claims, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the listed items.
It should be noted that the terms "first," "second," "third," and the like in the description and claims of the present application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in other sequences than described or illustrated herein. Furthermore, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or server that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The embodiment of the present application may be applied to the network architecture schematic diagram shown in fig. 1, where the network architecture shown in fig. 1 is a network architecture of a wireless communication system, the network architecture generally includes a terminal device and a network device, and the number and the form of each device do not constitute a limitation to the embodiment of the present application. The terminal device is connected with the network device, and the terminal device can acquire data network services through the network device, wherein the network device can provide communication services for a plurality of terminal devices. In the embodiment of the application, a unidirectional communication link from a network device to a terminal device is defined as a downlink, data transmitted on the downlink is downlink data, and the transmission direction of the downlink data is called as a downlink direction; and the unidirectional communication link from the terminal device to the network device is an uplink, the data transmitted on the uplink is uplink data, and the transmission direction of the uplink data is referred to as an uplink direction.
The terminal device referred to in the embodiments of the present application is an entity for receiving or transmitting signals at a user side. The terminal device may be a device providing voice and/or data connectivity to a user, e.g. a handheld device, a vehicle mounted device, etc. with wireless connection capability. The terminal device may also be other processing devices connected to the wireless modem. The terminal device may communicate with a Radio Access Network (RAN). A terminal device may also be referred to as a wireless terminal, a subscriber unit (subscriber unit), a subscriber station (subscriber station), a mobile station (mobile), a remote station (remote station), an access point (access point), a remote terminal (remote terminal), an access terminal (access terminal), a user terminal (user terminal), a user agent (user agent), a user device (user device), or a user equipment (user equipment, UE), among others. The terminal equipment may be mobile terminals such as mobile telephones (or so-called "cellular" telephones) and computers with mobile terminals, e.g. portable, pocket, hand-held, computer-included or car-mounted mobile devices, which exchange language and/or data with a radio access network. For example, the terminal device may be a Personal Communication Service (PCS) phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), or the like. Common terminal devices include, for example: the mobile terminal includes a mobile phone, a tablet computer, a notebook computer, a handheld computer, a Mobile Internet Device (MID), and a wearable device, such as a smart watch, a smart bracelet, a pedometer, and the like, but the embodiment of the present application is not limited thereto.
The network device related to the embodiment of the present application includes a Base Station (BS), which may be a device deployed in a radio access network and capable of performing wireless communication with a terminal. The base station may have various forms, such as a macro base station, a micro base station, a relay station, an access point, and the like. In the embodiment of the present application, the apparatus for implementing the function of the network device may be a network device; or may be a device, such as a system-on-chip, capable of supporting the network device to implement the function, and the device may be installed in the network device.
The method provided by the embodiment of the application can be applied to various communication systems, for example, an internet of things (IoT) system, a narrowband band internet of things (NB-IoT) system, a Long Term Evolution (LTE) system, a fifth generation (5th-generation, 5G) communication system, a hybrid architecture of LTE and 5G, a 5G New Radio (NR) system, a new communication system appearing in future communication development, and the like.
In order to avoid that the terminal device is in a ping-pong reselection network environment and frequently triggers network handover, the present application provides a network handover method, as shown in fig. 2, the method includes steps 201 to 202, where:
201. the terminal device measures cell signal strength of at least one candidate cell.
In this embodiment of the present application, the terminal device measures the cell signal strength of at least one candidate cell according to a Discontinuous Reception (DRX) cycle in an idle mode. Illustratively, as shown in fig. 3, in one DRX cycle, including time corresponding to wake-up preparation, Receiving paging message, neighbor cell blind detection and measurement and sleep, the terminal device will measure Signal strength of at least one candidate cell in a time period corresponding to the neighbor cell blind detection and measurement, where the Signal strength refers to cell parameters such as Reference Signal Receiving Power (RSRP), Reference Signal Receiving Quality (RSRQ), and the like.
In one possible implementation, at the reselection time TreselectionAnd the candidate cell meets the third condition, and the serving cell meets the four conditions.
The third condition is: when the priority of the candidate cell is high priority and the candidate cell and the serving cell belong to different frequency points, the cell signal intensity of the candidate cell is greater than a first threshold; when the priority of the candidate cell is equal to the priority, or when the candidate cell and the serving cell belong to the same frequency point, a first numerical value corresponding to the candidate cell is larger than a first numerical value corresponding to the serving cell, and the first numerical value is determined based on the cell signal strength and the cell signal offset; and when the priority of the candidate cell is low and the candidate cell and the serving cell belong to different frequency points, the cell signal strength of the candidate cell is greater than the second threshold and the cell signal strength of the serving cell is less than the third threshold.
The fourth condition is condition 1 or condition 2, wherein condition 1 is: when the priority of the service cell is high priority and the service cell and the first candidate cell belong to different frequency points, the signal intensity of the service cell is less than or equal to a first threshold; when the serving cell priority is equal priority, or when the candidate cell and the serving cell belong to the same cellWhen the frequency point is multiple, the first value corresponding to the service cell is smaller than or equal to the first value corresponding to the candidate cell; and when the priority of the serving cell is low priority and the candidate cell and the serving cell belong to different frequency points, the cell signal strength of the serving cell is less than or equal to a second threshold, or the cell signal strength of the candidate cell is greater than or equal to a third threshold. The condition 2 is: the cell signal strength of the serving cell is less than the cell signal strength of the candidate cell. Serving cell at reselection time TreselectionThe fourth condition is satisfied, and the serving cell only needs to be in the reselection time TreselectionIf any of the conditions 1 and 2 is satisfied, the serving cell may be considered to satisfy the fourth condition. In addition, the serving cell satisfies the condition 1 in the first target time, the serving cell satisfies the condition 2 in the second target time, and the first target time and the second target time may be combined to be the reselection time, or the serving cell may be considered to satisfy the fourth condition.
It should be noted that condition 1 of the third condition and the fourth condition can be summarized as a reselection condition, where the reselection condition is: when the priority of the reselected cell is high priority and the reselected cell and the resident cell belong to different frequency points, the cell signal intensity of the reselected cell is greater than a first threshold; when the priority of the reselected cell is equal to the priority, or when the reselected cell and the resident cell belong to the same frequency point, a first numerical value corresponding to the reselected cell is larger than a first numerical value corresponding to the resident cell, and the first numerical value is determined based on the cell signal strength and the cell signal offset; and when the priority of the reselected cell is low and the reselected cell and the resident cell belong to different frequency points, the cell signal strength of the reselected cell is greater than a second threshold, and the cell signal strength of the resident cell is less than a third threshold. The candidate cell satisfying the third condition means that, when the terminal device resides in the serving cell, the serving cell is regarded as a resident cell, and the candidate cell is regarded as a reselected cell, and satisfies the above described reselection condition. The assumption that the terminal device resides in the candidate cell, the candidate cell is regarded as a resident cell, and the serving cell is regarded as a reselected cell at this time, which does not satisfy the above described reselection condition. The reselection cell with the high priority is higher than the resident cell in priority, the reselection cell with the equal priority is equal to the resident cell in priority, and the reselection cell with the low priority is lower than the resident cell in priority.
The serving cell refers to a cell in which the terminal device currently resides, the system information sent by the candidate cell carries the priority corresponding to the candidate cell, and the terminal device can determine the priority of the candidate cell through the system information.
First value R corresponding to candidate cellnFirst value R corresponding to serving cellsCan be expressed as:
Rn＝Qmeas,n+Qoffset-Qoffsettemp+QoffsetSCPTM
Rs＝Qmeas,s+QHyst-Qoffsettemp+QoffsetSCPTM
wherein Q ismeas,nRSRP, Q representing candidate cellsmeas,sIndicating the RSRP of the serving cell. QHystRepresenting a hysteresis value in the sorting criterion; qoffsettempThe temporary penalty additional offset represents that if the corresponding cell has the connection establishment failure, the cell selection and reselection are carried out; qoffsetSCPTMIndicating the frequency Point can provide the offset of Cell selection and reselection when Multimedia Broadcast/Multicast Service (MBMS) Service is provided through Single Cell Point To multipoint (SC-PTM); qoffset represents an additional offset for cell selection and reselection.
Based on the possible implementation manners described above, the candidate cell and the serving cell need to be in the reselection time TreselectionThe third condition and the fourth condition are respectively satisfied. Based on the method, the terminal equipment is favorable for avoiding frequently initiating cell reselection and being in a ping-pong reselection network environment.
Optionally, the terminal device has camped on the candidate cell; and the second numerical value corresponding to the candidate cell is greater than 0, and the second numerical value is calculated based on the RSRP and the RSRQ of the candidate cell.
Wherein the terminal device may determine whether to camp on the candidate cell through the history serving cell list. The historical service cell list comprises service cell and adjacent frequency point information; wherein the serving cell information comprises the following information: frequency point, Physical Cell Identifier (PCI), priority, Qrxlevmin、Qqualmin、Qhyst、ThreshServing,LowP、ThreshServing,LowQ. Each neighbor contains the following information: frequency point, Qrxlevmin、QqualminFrequency point priority, Threshx,HighP、Threshx,low、Qoffsetfrequency。QrxlevminMinimum reception level, Q, indicating cell camping needsqualminIndicating the minimum signal quality, Thresh, required for cell campingx,HighPIndicating the cell signal threshold, Thresh, for the high priority cell at reselection evaluationx,lowIndicating the cell signal threshold corresponding to the low priority cell at the time of reselection evaluation. QoffsetfrequencyRefers to a frequency specific offset of that frequency.
The second value corresponding to the candidate cell is greater than 0, where the second value refers to an S value, and may specifically be represented as:
Srxlev＝Qrxlevmeas-(Qrxlevmin+Qrxlevminoffset)-Pcompensayion-Qoffsettemp
Squal＝Qqualmeas-(Qqualmin+Qqualminoffset)-Qoffsettemp
and both Srxlev and Squal are greater than 0, namely the S value corresponding to the candidate cell is greater than 0, and the candidate cell meets the S criterion and meets the self-residence condition. QoffsettempTemporary offset of signal, Q, for candidate cellqualmeasRSRQ, Q for candidate cellrxlevmeasIs the RSRP of the candidate cell. Qoffsettemp、Qrxlevmin、QqualminSimilar to the above description, the embodiments of the present application are not repeated herein.
In a possible implementation manner, the terminal device measures the cell signal strength corresponding to at least one candidate cell, and the specific implementation manner may be: when the cell signal strength of the serving cell is less than or equal to a fourth threshold, the terminal device measures the cell signal strength corresponding to at least one candidate cell; the method further comprises the following steps: and when the cell signal strength of the serving cell is greater than the fourth threshold, the terminal device does not measure the cell signal strength corresponding to the at least one candidate cell. Based on the implementation mode, the terminal device measures the signal intensity of the candidate cell when the cell signal intensity of the serving cell is weak, and does not measure the signal intensity of the candidate cell when the cell signal intensity of the serving cell is strong, so that the power consumption of the terminal device can be saved.
202. If a first candidate cell in the at least one candidate cell meets a first condition and the serving cell meets a second condition within the first time, the terminal device reselects to the first candidate cell.
In an embodiment of the present application, the first condition relates to cell signal strengths of the first candidate cell and the serving cell.
The first condition is: when the priority of the first candidate cell is high priority and the first candidate cell and the serving cell belong to different frequency points, the cell signal intensity of the first candidate cell is greater than a first threshold; when the priority of the first candidate cell is equal to the priority, or when the first candidate cell and the serving cell belong to the same frequency point, a first numerical value corresponding to the first candidate cell is greater than a first numerical value corresponding to the serving cell, and the first numerical value is determined based on the cell signal strength and the cell signal offset; and when the priority of the first candidate cell is low priority and the first candidate cell and the serving cell belong to different frequency points, the cell signal strength of the first candidate cell is greater than the second threshold and the cell signal strength of the serving cell is less than the third threshold.
The second condition is condition 1 or condition 2, wherein condition 1 is: when the priority of the service cell is high priority and the service cell and the first candidate cell belong to different frequency points, the signal intensity of the service cell is less than or equal to a first threshold; when the priority of the serving cell is equal to the priority, or when the first candidate cell and the serving cell belong to the same frequency point, the first numerical value corresponding to the serving cell is smaller than or equal to the first numerical value corresponding to the first candidate cell; when the priority of the serving cell is low priority and the first candidate cell and the serving cell belong to different frequency points, the cell signal strength of the serving cell is less than or equal to a second threshold, or the cell signal strength of the first candidate cell is greater than or equal to a third threshold. The condition 2 is: the cell signal strength of the serving cell is less than the cell signal strength of the first candidate cell. The serving cell satisfying the fourth condition in the first time means that the serving cell may be considered to satisfy the fourth condition as long as the serving cell satisfies any one of the conditions 1 and 2 in the first time. In addition, the serving cell satisfies the condition 1 in the first target time, the serving cell satisfies the condition 2 in the second target time, and the first target time and the second target time may be combined to be the reselection time, or the serving cell may be considered to satisfy the fourth condition.
It should be noted that condition 1 of the first condition and the second condition may be summarized as a reselection condition, where the specific description of the reselection condition is the same as that in step 201, and this embodiment of the present application does not describe that the first candidate cell satisfies the first condition again here, that is, when the terminal device resides in the serving cell, the serving cell is regarded as a resident cell, and the first candidate cell is regarded as a reselection cell, and satisfies the reselection condition described above. The assumption that the terminal device resides in the first candidate cell, the first candidate cell is regarded as a resident cell, and the serving cell is regarded as a reselected cell at this time, which does not satisfy the above described reselection condition. The reselection cell with the high priority is higher than the resident cell in priority, the reselection cell with the equal priority is equal to the resident cell in priority, and the reselection cell with the low priority is lower than the resident cell in priority.
First value R corresponding to first candidate cellmAnd a serving cell RsThe corresponding first value may be expressed as:
Rm＝Qmeas,m+Qoffset-Qoffsettemp+QoffsetSCPTM
Rs＝Qmeas,s+QHyst-Qoffsettemp+QoffsetSCPTM
wherein Q ismeas,mRSRP, Q representing a first candidate cellmeas,sIndicating the RSRP of the serving cell. QHyst、Qoffsettemp、QoffsetSCPTMSimilar to the description in step 201, the embodiments of the present application are not described herein again.
Based on the possible implementation manners described above, the first candidate cell and the serving cell need to satisfy a first condition within a first time, where the first condition includes a condition corresponding to the first candidate cell and a condition corresponding to the serving cell. When the first candidate cell meets the condition corresponding to the first candidate cell, the signal quality of the current first candidate cell is better, and the terminal equipment can obtain better communication service after reselecting to the first candidate cell; when the serving cell meets the condition corresponding to the serving cell in the first condition, it indicates that the signal quality of the current serving cell is poor, and if the terminal device reselects the first candidate cell, the terminal device does not reselect the serving cell. Therefore, based on the method, the terminal equipment can be prevented from frequently initiating cell reselection and being in a ping-pong reselection network environment.
Optionally, the terminal device camped on the first candidate cell; the cell signal strength of the first candidate cell is greater than the cell signal strength of the serving cell; and the second value corresponding to the first candidate cell is greater than 0, and the second value is calculated based on the reference signal received power RSRP and the reference signal received quality RSRQ of the first candidate cell.
Wherein the terminal device may determine whether to camp on the first candidate cell through the history serving cell list. The second value corresponding to the candidate cell is greater than 0, wherein the second value may be expressed by the following formula:
Srxlev＝Qrxlevmeas-(Qrxlevmin+Qrxlevminoffset)-Pcompensayion-Qoffsettemp
Squal＝Qqualmeas-(Qqualmin+Qqualminoffset)-Qoffsettemp
the meaning of the parameter in the formula may refer to the description in step 201, and is not described herein again in this embodiment of the present application.
In one possible implementation, the first time is determined based on a reselection time and a DRX cycle time. The first time can be expressed by the following formula
Figure BDA0003378485970000111
Wherein, T1Denotes a first time, TDRXIndicating a DRX cycle.
The terminal device may determine whether the first candidate cell satisfies the first condition and whether the serving cell satisfies the second condition within the first time by means of a counter. Setting the counter as count, the threshold value corresponding to the count is
Figure BDA0003378485970000112
The initial value of the count is 0, the terminal device measures the cell signal strength of the first candidate cell during the blind detection and measurement time of the neighboring cell of each DRX cycle, and determines whether the first candidate cell meets the first condition and whether the serving cell meets the second condition in combination with the cell signal strength of the serving device. If the first candidate cell meets the first condition and the serving cell meets the second condition, adding 1 to the count; and if the serving cell does not meet the second condition and/or the first candidate cell does not meet the first condition, clearing the count. When the count value reaches
Figure BDA0003378485970000113
Then, it is confirmed that the first candidate cell and the serving cell satisfy the first condition within the first time.
In one possible implementation, the at least one candidate cell is a plurality of candidate cells, and the method further includes: the terminal device selects a first candidate cell from at least one candidate cell based on cell signal strengths of the candidate cells and priorities of the candidate cells. The terminal device calculates a third value corresponding to the plurality of candidate cells, and selects a candidate cell with the largest third value from the plurality of candidate cells as the first candidate cell. The third value sort may be represented by the following formula:
sort＝prioncell×factor1+Rn
wherein prioncellThe priority of the candidate cell is indicated, a factor1 is a preset value and represents the weight of the priority of the candidate cell, RnFor the first value corresponding to the candidate cell, the specific calculation manner may refer to the description in step 201, and details of the embodiment of the present application are not described herein. factor1 has a value greater than RnThe maximum possible. Based on the implementation mode, the terminal equipment can select the optimal first candidate cell from the candidate cells, and better network service can be obtained after the terminal equipment reselects the first candidate cell.
Alternatively, the third value sort may be represented by the following formula:
sort＝prioncell×factor1+Rn+factor2
the value of the factor2 is based on whether the candidate cell meets the target condition, if the candidate cell meets the target condition, the factor2 is a number far greater than the factor1, and if the candidate cell does not meet the target condition, the factor2 is 0. The target condition may be any one or more of the following conditions: the candidate cell is a cell under a Closed Subscriber Group (CSG) to which the terminal device belongs; when the terminal equipment is in the enhanced coverage mode, the candidate cell meets the normal coverage. Based on the implementation manner, the condition parameter factor2 is added to the parameter corresponding to the third value, which is beneficial to selecting the first candidate cell most suitable for the terminal device from the multiple candidate cells based on the actual application scenario of the current terminal device, so that the terminal device can obtain better network service after reselecting to the first candidate cell.
In a possible implementation manner, if it is determined that the first candidate cell and the serving cell satisfy the first condition within the first time, a specific process of the terminal device reselecting to the first candidate cell is as shown in fig. 4: the terminal device will read the Master Information Block (MIB) and the system information block 1 (SIB 1) in the remaining period of the serving cell DRX cycle, and will continue to read the remaining system information, such as SIB2, SIB3, etc., after determining that the first candidate cell satisfies the cell camping condition. And after the terminal equipment finishes reading the system information, reselecting the terminal equipment to the first candidate cell. And if the terminal equipment does not completely read the rest system information in the rest time period of the DRX cycle of the service cell, the terminal equipment reads the rest system information in the next DRX cycle. If the first candidate cell does not satisfy the cell residence condition, the terminal device will not perform handover, but will record the information of the first candidate cell in the history serving cell list. Based on the implementation mode, the terminal equipment can obtain better network service after reselecting to the first candidate cell.
Referring to fig. 5, fig. 5 is a schematic structural diagram of a communication device according to an embodiment of the present application. The communication apparatus shown in fig. 5 may be used to perform part or all of the functions of the terminal device described above. The device may be a terminal device, or a device in the terminal device, or a device capable of being used in cooperation with the terminal device. Wherein, the communication device can also be a chip system. The communication device shown in fig. 5 may comprise a measurement unit 501 and a reselection unit 502.
The measuring unit 501 is configured to measure cell signal strength of at least one candidate cell; the reselecting unit 502 is configured to reselect to a first candidate cell if, in a first time, the first candidate cell of the at least one candidate cell satisfies a first condition and the serving cell satisfies a second condition, where the serving cell is a cell where the terminal device currently resides, and both the first condition and the second condition are related to cell signal strength of the first candidate cell and cell signal strength of the serving cell.
In a possible implementation manner, the at least one candidate cell is a plurality of candidate cells, and the reselection unit 502 is further configured to select a first candidate cell from the at least one candidate cell based on cell signal strengths of the plurality of candidate cells and priorities of the plurality of candidate cells.
In one possible implementation, the first condition is: when the priority of the first candidate cell is high priority and the first candidate cell and the serving cell belong to different frequency points, the cell signal intensity of the first candidate cell is greater than a first threshold; when the priority of the first candidate cell is equal to the priority, or when the first candidate cell and the serving cell belong to the same frequency point, a first numerical value corresponding to the first candidate cell is greater than a first numerical value corresponding to the serving cell, and the first numerical value is determined based on the cell signal strength and the cell signal offset; when the priority of the first candidate cell is low priority and the first candidate cell and the serving cell belong to different frequency points, the cell signal intensity of the first candidate cell is greater than a second threshold and the cell signal intensity of the serving cell is less than a third threshold; the second condition is one or more of the following conditions: when the priority of the service cell is high priority and the service cell and the first candidate cell belong to different frequency points, the signal intensity of the service cell is less than or equal to a first threshold; when the priority of the serving cell is equal to the priority, or when the first candidate cell and the serving cell belong to the same frequency point, the first numerical value corresponding to the serving cell is smaller than or equal to the first numerical value corresponding to the first candidate cell; when the priority of the serving cell is low priority and the first candidate cell and the serving cell belong to different frequency points, the cell signal strength of the serving cell is less than or equal to a second threshold, or the cell signal strength of the first candidate cell is greater than or equal to a third threshold; the cell signal strength of the serving cell is less than the cell signal strength of the first candidate cell.
In one possible implementation, the apparatus corresponding to the communication device 50 camped on the first candidate cell; and the second value corresponding to the first candidate cell is greater than 0, and the second value is calculated based on the reference signal received power RSRP and the reference signal received quality RSRQ of the first candidate cell.
In a possible implementation manner, during the reselection time, the candidate cell satisfies the third condition, and the serving cell satisfies the fourth condition that the third condition is that: when the priority of the candidate cell is high priority and the candidate cell and the serving cell belong to different frequency points, the cell signal intensity of the candidate cell is greater than a first threshold; when the priority of the candidate cell is equal to the priority, or when the candidate cell and the serving cell belong to the same frequency point, a first numerical value corresponding to the candidate cell is larger than a first numerical value corresponding to the serving cell, and the first numerical value is determined based on the cell signal strength and the cell signal offset; when the priority of the candidate cell is low priority and the candidate cell and the serving cell belong to different frequency points, the cell signal intensity of the candidate cell is greater than a second threshold and the cell signal intensity of the serving cell is less than a third threshold; the fourth condition is one of the following conditions: when the priority of the service cell is high priority and the service cell and the first candidate cell belong to different frequency points, the signal intensity of the service cell is less than or equal to a first threshold; when the priority of the serving cell is equal to the priority, or when the candidate cell and the serving cell belong to the same frequency point, the first numerical value corresponding to the serving cell is smaller than or equal to the first numerical value corresponding to the candidate cell; when the priority of the serving cell is low priority and the candidate cell and the serving cell belong to different frequency points, the cell signal strength of the serving cell is less than or equal to a second threshold, or the cell signal strength of the candidate cell is greater than or equal to a third threshold; the cell signal strength of the serving cell is less than the cell signal strength of the candidate cell.
In one possible implementation, the device corresponding to the communication apparatus 50 has camped on the candidate cell; the cell signal strength of the candidate cell is greater than the cell signal strength of the serving cell; and the second value corresponding to the candidate cell is greater than 0, and the second value is calculated based on the reference signal received power RSRP and the reference signal received quality RSRQ of the candidate cell.
In one possible implementation, the first time is determined based on a reselection time and a discontinuous reception, DRX, cycle time.
In a possible implementation manner, when the measurement unit 501 measures the cell signal strength corresponding to at least one candidate cell, specifically, the measurement unit includes: the measuring unit 501 is configured to measure a cell signal strength corresponding to at least one candidate cell when the cell signal strength of the serving cell is less than or equal to a fourth threshold; the method further comprises the following steps: the measuring unit 501 is further configured to not measure the cell signal strength corresponding to at least one candidate cell when the cell signal strength of the serving cell is greater than the fourth threshold.
Each device and product described in the above embodiments includes modules/units, which may be software modules/units, or hardware modules/units, or may be partly software modules/units and partly hardware modules/units. For example, for each device or product of an application or integrated chip, each module/unit included in the device or product may be implemented by hardware such as a circuit, or at least a part of the modules/units may be implemented by a software program, which runs on an integrated processor inside the chip, and the rest of the modules/units may be implemented by hardware such as a circuit; for each device and product corresponding to or integrating the chip module, each module/unit included in the device and product can be implemented by adopting hardware such as a circuit, different modules/units can be positioned in the same piece (such as a chip, a circuit module and the like) or different components of the chip module, at least part of/unit can be implemented by adopting a software program, and the software program runs in the chip module, and the rest of the modules/units of the integrated processor can be implemented by adopting hardware such as a circuit; for each device or product corresponding to or integrating the terminal, the modules/units included in the device or product may all be implemented by hardware such as circuits, different modules/units may be located in the same component (e.g., chip, circuit module, etc.) or different components in the terminal, or at least some of the modules/units may be implemented by software programs, the programs run on a processor integrated in the terminal, and the remaining sub-modules/units may be implemented by hardware such as circuits.
Fig. 6 shows a communication apparatus 60 according to an embodiment of the present application, which is used for implementing the above-mentioned terminal device function. The apparatus may be a terminal device or an apparatus for a terminal device. The means for the terminal device may be a system of chips or a chip within the terminal device. The chip system may be composed of a chip, or may include a chip and other discrete devices.
The communication device can also be used for realizing the functions of the terminal equipment. The apparatus may be a terminal device or an apparatus for a terminal device. The means for the terminal device may be a system of chips or a chip within the terminal device. The chip system may be composed of a chip, or may include a chip and other discrete devices.
The communication device 60 includes at least one processor 620, which is configured to implement the data processing function of the terminal device in the method provided by the embodiment of the present application. The apparatus 60 may further include a communication interface 610, configured to implement transceiving operations of a terminal device in the method provided in the embodiment of the present application. In embodiments of the present application, the communication interface may be a transceiver, circuit, bus, module, or other type of communication interface for communicating with other devices over a transmission medium. For example, the communication interface 610 is used for devices in the apparatus 60 to communicate with other devices. The processor 620 utilizes the communication interface 610 to send and receive data and is configured to implement the method described in the method embodiment above with respect to fig. 2.
The apparatus 60 may also include at least one memory 630 for storing program instructions and/or data. The memory 630 is coupled to the processor 620. The coupling in the embodiments of the present application is an indirect coupling or a communication connection between devices, units or modules, and may be an electrical, mechanical or other form for information interaction between the devices, units or modules. The processor 620 may operate in conjunction with the memory 630. Processor 620 may execute program instructions stored in memory 630. At least one of the at least one memory may be included in the processor.
When the device 60 is powered on, the processor 620 can read the software program in the memory 630, interpret and execute the instructions of the software program, and process the data of the software program. When data needs to be sent wirelessly, the processor 620 performs baseband processing on the data to be sent, and outputs a baseband signal to a radio frequency circuit (not shown), and the radio frequency circuit performs radio frequency processing on the baseband signal and sends the radio frequency signal to the outside in the form of electromagnetic waves through an antenna. When data is transmitted to the device 60, the rf circuit receives an rf signal through the antenna, converts the rf signal into a baseband signal, and outputs the baseband signal to the processor 620, and the processor 620 converts the baseband signal into data and processes the data.
In another implementation, the rf circuitry and antennas may be provided independently of the processor 620 performing baseband processing, for example in a distributed scenario, the rf circuitry and antennas may be in a remote arrangement independent of the communication device.
The specific connection medium among the communication interface 610, the processor 620 and the memory 630 is not limited in the embodiments of the present application. In the embodiment of the present application, the memory 630, the processor 620, and the communication interface 610 are connected by the bus 640 in fig. 6, the bus is represented by a thick line in fig. 6, and the connection manner between other components is merely illustrative and not limited. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 6, but this is not intended to represent only one bus or type of bus.
The output or reception of the communication interface 610 may be a baseband signal when the apparatus 60 is specifically used in a terminal device, for example, when the apparatus 60 is specifically a chip or a chip system. When the apparatus 60 is a terminal device, the communication interface 610 may output or receive radio frequency signals. In the embodiments of the present application, the processor may be a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, and may implement or execute the methods, operations, and logic blocks disclosed in the embodiments of the present application. A general purpose processor may be a microprocessor or any conventional processor or the like. The operations of the methods disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in a processor.
It should be noted that, the communication apparatus may perform relevant steps of the terminal device or the access network device in the foregoing method embodiments, which may specifically refer to implementation manners provided in the foregoing steps, and details are not described herein again.
For each device or product applied to or integrated in the communication device, each module included in the device or product may be implemented by hardware such as a circuit, different modules may be located in the same component (e.g., a chip, a circuit module, etc.) or different components in the terminal, or at least a part of the modules may be implemented by a software program running on a processor integrated in the terminal, and the rest (if any) of the modules may be implemented by hardware such as a circuit.
As shown in fig. 7, fig. 7 is a schematic structural diagram of a module device according to an embodiment of the present disclosure. The module device 70 can perform the steps related to the terminal device in the foregoing method embodiments, and the module device 70 includes: a communication module 701, a power module 702, a memory module 703 and a chip module 704.
The power module 702 is configured to provide power for the module device; the storage module 703 is used for storing data and instructions; the communication module 701 is used for performing module device internal communication, or is used for performing module device and external device communication.
The chip module 704 is configured to measure cell signal strength of at least one candidate cell; the chip module 704 is configured to reselect to a first candidate cell if a first candidate cell of the at least one candidate cell satisfies a first condition and a serving cell satisfies a second condition within a first time, where the serving cell is a cell in which the terminal device currently resides, and both the first condition and the second condition are related to cell signal strength of the first candidate cell and cell signal strength of the serving cell.
In a possible implementation manner, the at least one candidate cell is a plurality of candidate cells, and the chip module 704 is further configured to select a first candidate cell from the at least one candidate cell based on cell signal strengths of the plurality of candidate cells and priorities of the plurality of candidate cells.
In one possible implementation, the first condition is: when the priority of the first candidate cell is high priority and the first candidate cell and the serving cell belong to different frequency points, the cell signal intensity of the first candidate cell is greater than a first threshold; when the priority of the first candidate cell is equal to the priority, or when the first candidate cell and the serving cell belong to the same frequency point, a first numerical value corresponding to the first candidate cell is greater than a first numerical value corresponding to the serving cell, and the first numerical value is determined based on the cell signal strength and the cell signal offset; when the priority of the first candidate cell is low priority and the first candidate cell and the serving cell belong to different frequency points, the cell signal intensity of the first candidate cell is greater than a second threshold and the cell signal intensity of the serving cell is less than a third threshold; the second condition is one or more of the following conditions: when the priority of the service cell is high priority and the service cell and the first candidate cell belong to different frequency points, the signal intensity of the service cell is less than or equal to a first threshold; when the priority of the serving cell is equal to the priority, or when the first candidate cell and the serving cell belong to the same frequency point, the first numerical value corresponding to the serving cell is smaller than or equal to the first numerical value corresponding to the first candidate cell; when the priority of the serving cell is low priority and the first candidate cell and the serving cell belong to different frequency points, the cell signal strength of the serving cell is less than or equal to a second threshold, or the cell signal strength of the first candidate cell is greater than or equal to a third threshold; the cell signal strength of the serving cell is less than the cell signal strength of the first candidate cell.
In one possible implementation, the device corresponding to the module device 70 has resided in the first candidate cell; and the second value corresponding to the first candidate cell is greater than 0, and the second value is calculated based on the reference signal received power RSRP and the reference signal received quality RSRQ of the first candidate cell.
In a possible implementation manner, during the reselection time, the candidate cell satisfies a third condition, and the serving cell satisfies a fourth condition, where the third condition is: when the priority of the candidate cell is high priority and the candidate cell and the serving cell belong to different frequency points, the cell signal intensity of the candidate cell is greater than a first threshold; when the priority of the candidate cell is equal to the priority, or when the candidate cell and the serving cell belong to the same frequency point, a first numerical value corresponding to the candidate cell is larger than a first numerical value corresponding to the serving cell, and the first numerical value is determined based on the cell signal strength and the cell signal offset; when the priority of the candidate cell is low priority and the candidate cell and the serving cell belong to different frequency points, the cell signal intensity of the candidate cell is greater than a second threshold and the cell signal intensity of the serving cell is less than a third threshold; the fourth condition is one of the following conditions: when the priority of the service cell is high priority and the service cell and the first candidate cell belong to different frequency points, the signal intensity of the service cell is less than or equal to a first threshold; when the priority of the serving cell is equal to the priority, or when the candidate cell and the serving cell belong to the same frequency point, the first numerical value corresponding to the serving cell is smaller than or equal to the first numerical value corresponding to the candidate cell; when the priority of the serving cell is low priority and the candidate cell and the serving cell belong to different frequency points, the cell signal strength of the serving cell is less than or equal to a second threshold, or the cell signal strength of the candidate cell is greater than or equal to a third threshold; the cell signal strength of the serving cell is less than the cell signal strength of the candidate cell.
In one possible implementation, the device corresponding to the module device 70 has camped on the candidate cell; the cell signal strength of the candidate cell is greater than the cell signal strength of the serving cell; and the second value corresponding to the candidate cell is greater than 0, and the second value is calculated based on the reference signal received power RSRP and the reference signal received quality RSRQ of the candidate cell.
In one possible implementation, the first time is determined based on a reselection time and a discontinuous reception, DRX, cycle time.
In a possible implementation manner, when the chip module 704 measures the cell signal strength corresponding to at least one candidate cell, specifically: the chip module 704 is configured to measure a cell signal strength corresponding to at least one candidate cell when the cell signal strength of the serving cell is less than or equal to a fourth threshold; the method further comprises the following steps: the chip module 704 is further configured to not measure the cell signal strength corresponding to at least one candidate cell when the cell signal strength of the serving cell is greater than the fourth threshold.
Embodiments of the present application further provide a computer-readable storage medium, in which instructions are stored, and when the computer-readable storage medium is executed on a processor, the method flow of the above method embodiments is implemented.
Embodiments of the present application further provide a computer program product, where when the computer program product runs on a processor, the method flow of the above method embodiments is implemented.
It is noted that, for simplicity of explanation, the foregoing method embodiments are described as a series of acts or combination of acts, but those skilled in the art will appreciate that the present application is not limited by the order of acts, as some acts may, in accordance with the present application, occur in other orders and/or concurrently. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required in this application.
The descriptions of the embodiments provided in the present application may be referred to each other, and the descriptions of the embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments. For convenience and brevity of description, for example, the functions and operations performed by the devices and apparatuses provided in the embodiments of the present application may refer to the related descriptions of the method embodiments of the present application, and may also be referred to, combined with or cited among the method embodiments and the device embodiments.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims (12)

1. A method of cell reselection, the method comprising:
the terminal equipment measures the cell signal intensity of at least one candidate cell;
if a first candidate cell of the at least one candidate cell meets a first condition and a serving cell meets a second condition within a first time, the terminal device reselects to the first candidate cell, the serving cell is a cell where the terminal device currently resides, and both the first condition and the second condition are related to cell signal strength of the first candidate cell and cell signal strength of the serving cell.
2. The method of claim 1, wherein the at least one candidate cell is a plurality of candidate cells, and wherein the method further comprises:
the terminal device selects a first candidate cell from the at least one candidate cell based on cell signal strengths of the plurality of candidate cells and priorities of the plurality of candidate cells.
3. The method according to claim 1 or2,
the first condition is:
when the priority of the first candidate cell is high priority and the first candidate cell and the serving cell belong to different frequency points, the cell signal intensity of the first candidate cell is greater than a first threshold;
when the priority of the first candidate cell is equal priority, or when the first candidate cell and the serving cell belong to the same frequency point, a first numerical value corresponding to the first candidate cell is larger than a first numerical value corresponding to the serving cell, and the first numerical value is determined based on cell signal strength and cell signal offset;
when the priority of the first candidate cell is low priority and the first candidate cell and the serving cell belong to different frequency points, the cell signal strength of the first candidate cell is greater than a second threshold and the cell signal strength of the serving cell is less than a third threshold;
the second condition is one or more of the following conditions:
when the priority of the serving cell is high priority and the serving cell and the first candidate cell belong to different frequency points, the signal intensity of the serving cell is less than or equal to the first threshold;
when the priority of the serving cell is equal to the priority, or when the first candidate cell and the serving cell belong to the same frequency point, a first numerical value corresponding to the serving cell is smaller than or equal to a first numerical value corresponding to the first candidate cell;
when the priority of the serving cell is low priority and the first candidate cell and the serving cell belong to different frequency points, the cell signal strength of the serving cell is less than or equal to a second threshold, or the cell signal strength of the first candidate cell is greater than or equal to a third threshold;
the cell signal strength of the serving cell is less than the cell signal strength of the first candidate cell.
4. The method of claim 3, wherein the terminal device camped on the first candidate cell; and a second value corresponding to the first candidate cell is greater than 0, and the second value is calculated based on the reference signal received power RSRP and the reference signal received quality RSRQ of the first candidate cell.
5. The method according to any of claims 2-4, wherein the candidate cell satisfies a third condition and the serving cell satisfies a fourth condition during the reselection time
The third condition is:
when the priority of the candidate cell is high priority and the candidate cell and the serving cell belong to different frequency points, the cell signal intensity of the candidate cell is greater than a first threshold;
when the priority of the candidate cell is equal priority or the candidate cell and the serving cell belong to the same frequency point, a first numerical value corresponding to the candidate cell is larger than a first numerical value corresponding to the serving cell, and the first numerical value is determined based on cell signal strength and cell signal offset;
when the priority of the candidate cell is low priority and the candidate cell and the serving cell belong to different frequency points, the cell signal strength of the candidate cell is greater than a second threshold and the cell signal strength of the serving cell is less than a third threshold;
the fourth condition is one of the following conditions:
when the priority of the serving cell is high priority and the serving cell and the first candidate cell belong to different frequency points, the signal intensity of the serving cell is less than or equal to the first threshold;
when the priority of the serving cell is equal to the priority, or when the candidate cell and the serving cell belong to the same frequency point, the first numerical value corresponding to the serving cell is smaller than or equal to the first numerical value corresponding to the candidate cell;
when the priority of the serving cell is low priority and the candidate cell and the serving cell belong to different frequency points, the cell signal strength of the serving cell is less than or equal to a second threshold, or the cell signal strength of the candidate cell is greater than or equal to a third threshold;
the cell signal strength of the serving cell is less than the cell signal strength of the candidate cell.
6. The method of claim 5, wherein the terminal device camped on the candidate cell; and a second value corresponding to the candidate cell is greater than 0, and the second value is calculated based on the reference signal received power RSRP and the reference signal received quality RSRQ of the candidate cell.
7. The method of claim 5 or 6, wherein the first time is determined based on the reselection time and a Discontinuous Reception (DRX) cycle time.
8. The method according to any one of claims 1 to 7, wherein the measuring, by the terminal device, the cell signal strength corresponding to at least one candidate cell includes:
when the cell signal strength of the serving cell is less than or equal to a fourth threshold, the terminal device measures the cell signal strength corresponding to at least one candidate cell;
the method further comprises the following steps:
and when the cell signal strength of the serving cell is greater than the fourth threshold, the terminal device does not measure the cell signal strength corresponding to at least one candidate cell.
9. A communication device, characterized in that the communication device comprises a measurement unit and a reselection unit, wherein:
a measurement unit for measuring cell signal strength of at least one candidate cell;
a reselecting unit, configured to reselect to a first candidate cell in the at least one candidate cell if the first candidate cell and a serving cell meet a first condition and a second condition at a first time, where the serving cell is a cell where the terminal device currently resides, and the first condition is related to cell signal strength of the first candidate cell and cell signal strength of the serving cell.
10. The utility model provides a module equipment, its characterized in that, module equipment includes communication module, power module, storage module and chip module, wherein:
the power supply module is used for providing electric energy for the module equipment;
the storage module is used for storing data and instructions;
the communication module is used for carrying out internal communication of module equipment or is used for carrying out communication between the module equipment and external equipment;
the chip module is used for:
measuring cell signal strength of at least one candidate cell;
if a first candidate cell of the at least one candidate cell meets a first condition and a serving cell of the at least one candidate cell meets a second condition within a first time, reselecting to the first candidate cell, where the serving cell is a cell where the terminal device currently resides, and the first condition is related to cell signal strength of the first candidate cell and cell signal strength of the serving cell.
11. A communication device comprising a processor, a memory, and a transceiver;
the transceiver is used for receiving channels or signals or sending channels or signals;
the memory for storing a computer program;
the processor, which is used for calling the computer program from the memory to execute the method of any claim 1-8.
12. A computer-readable storage medium, having stored thereon a computer program which, when run on a communication apparatus, causes the communication apparatus to perform the method of any one of claims 1 to 8.
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