RU2795828C1 - Method and device for cell reselection, method and device for information transmission - Google Patents

Abstract

FIELD: communications.

EFFECT: improving the quality of communication and reducing the number of cases of unnecessary cell reselection by the terminal.

SUBSTANCE: cell reselection method performed by the terminal includes: receiving priority information relating to a tracking area (TA), and performing cell reselection based on the priority information, the priority information comprising a combined priority of a TA and a frequency point.

20 cl, 10 dwg

Description

The field of technology to which the invention belongs

Embodiments of the present invention relate, but are not limited to, to the field of wireless communication and, in particular, to a method and apparatus for cell reselection, a method and apparatus for transmitting information, a communication device, and a storage medium.

Prerequisites for the creation of the invention

The fifth generation (5G) mobile communication network introduces a network segmentation technology that allows a network (core network and/or access network) to be divided into multiple network segments. Different services are transmitted in different network segments and do not interfere with each other.

The terminal performs cell reselection according to its location in the process of moving. However, sometimes the cell selected by the terminal cannot provide the network segment required by the terminal, so the communication quality of the terminal cannot be as expected. Sometimes, the terminal has to frequently perform cell reselection due to network segmentation.

The essence of the invention

According to embodiments of the present invention, a method and apparatus for cell reselection, a method and apparatus for transmitting information, a communication apparatus, and a storage medium are provided.

According to a first aspect of embodiments of the present invention, a cell reselection method is provided. The method is applied in the terminal and includes: receiving priority information related to the tracking area (TA, Tracking Area), and performing cell reselection in accordance with the priority information.

According to the second aspect of the embodiments of the present invention, a method for transmitting information is provided. The method is applied in the base station and includes:

outputting priority information related to the TA, wherein the priority information is configured for cell reselection of the terminal.

According to a third aspect of the embodiments of the present invention, there is provided a communication device comprising:

antenna;

memory;

a processor connected to the antenna and the memory, respectively, and configured to control the antenna for transmitting and receiving radio signals by executing an executable program stored in the memory, and capable of performing the steps of the method provided in the first aspect or the second aspect.

In accordance with the method proposed by the embodiments of the present invention, the first priority information related to the TA is entered; when cell reselection is performed, the terminal performs cell reselection according to the priority information, with different tracking areas supporting different network segments. Cell reselection is performed according to the priority information related to the TA, which reduces the possibility that the communication quality will not be as expected due to the selection of an unsuitable cell based solely on cell priority or frequency priority, and also due to the inability to provide a network segment required or supported by the terminal, which improves communication quality and reduces the occurrence of unnecessary terminal cell reselection.

Brief description of the drawings

Fig. 1 is a diagram of a wireless communication system according to an embodiment of the present invention.

Fig. 2 is a diagram of a network segment according to an embodiment of the present invention.

Fig. 3 is a diagram of a tracking area, a frequency point, and a network segment in accordance with the present invention.

Fig. 4 is a flowchart of a cell reselection method according to an embodiment of the present invention.

Fig. 5 is a flowchart of a cell reselection method according to the present invention.

Fig. 6 is a flowchart of a cell reselection method according to the present invention.

Fig. 7 is a block diagram of a cell reselection apparatus according to an embodiment of the present invention.

Fig. 8 is a block diagram of an information transmission device according to an embodiment of the present invention.

Fig. 9 is a diagram of a terminal according to an embodiment of the present invention.

Fig. 10 is a diagram of a base station according to an embodiment of the present invention.

Detailed description of the invention

Next will be described in detail illustrative embodiments of the invention, examples of which are shown in the accompanying drawings. In the following description, reference is made to the accompanying drawings, with the same reference numbers in different drawings corresponding to the same or similar elements, unless otherwise indicated. The implementations described in the following illustrative embodiments of the invention are not intended to represent all implementations corresponding to this invention. On the contrary, they are only examples of devices and methods corresponding to certain aspects of the present invention set forth in the appended claims.

The terms used in the embodiments of the present invention are only intended to describe specific embodiments of the invention and are not intended to limit the invention. As used in this specification and the appended claims, the singular forms also include the plural forms, unless the context clearly dictates otherwise. It is also to be understood that, as used herein, the expression "and/or" refers to and includes any or all possible combinations of one or more of the respective listed elements.

It should be understood that although the terms "first", "second", "third", etc. may be used in embodiments of the present invention to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, within the spirit of the embodiments of the present invention, the first information may also be referred to as second information, and similarly, the second information may also be referred to as first information. Depending on the context, the word "if" as used herein may mean "in the event", "when", or "in response to a determination".

Let us turn to Fig. 1, which is a diagram of a wireless communication system according to an embodiment of the present invention. As shown in FIG. 1, the wireless communication system is a communication system based on cellular mobile technology, and the wireless communication system may include multiple terminals 11 and multiple base stations 12.

Terminal 11 may be a device that provides communication for voice and/or data to a user. Terminal 11 may communicate with one or more core networks via a radio access network (RAN, Radio Access Network), and terminal 11 may be an Internet of Things (IoT, Internet of Things) terminal, such as a touch device, mobile phone (or "cellular" phone). ) and a computer with an Internet of Things terminal, for example, can be a stationary, portable, handheld, handheld, computer-embedded device or a device installed on a vehicle, such as a station (STA, Station), subscriber unit, subscriber station, mobile station, mobile device, remote station, access point, remote terminal, access terminal, user terminal, user agent, user device or user equipment (UE, User Equipment). Alternatively, the terminal 11 may also be an unmanned aerial vehicle device. Alternatively, the terminal 11 may also be a vehicle-mounted computer, such as a trip computer with a wireless communication function, or a wireless communication device connected to the trip computer. Alternatively, the terminal 11 may also be a roadside device, such as a street lamp, traffic light, or other roadside device with a wireless communication function.

Base station 12 may be a network side device in a wireless communication system. The wireless communication system may be a 4th generation (4G, ^4th Generation) mobile communication system, also known as a Long Term Evolution (LTE) system; or the wireless communication system may also be a 5th generation (5G, ^5th Generation) mobile communication system, also known as a "new radio" (NR, New Radio) system or a 5G NR system. Alternatively, the wireless communication system may also be a next generation 5G system. The access network in a 5G system may be referred to as a new generation radio access network (NG-RAN, New Generation-Radio Access Network). Alternatively, the wireless communication system is a Machine Type Communication (MTC) system.

Base station 12 may be an evolved base station (eNB, evolved Node B) used in a 4G system. Alternatively, base station 120 may also be a base station (gNB, Next Generation Node B) using a centralized and distributed architecture in a 5G system. When the base station 12 uses a centralized and distributed architecture, it usually contains a central unit (CU, Central Unit) and at least two distributed units (DU, Distributed Unit). The central unit is equipped with a protocol stack of the Packet Data Convergence Protocol (PDCP) layer, the radio link control layer (RLC, Radio Link Control) and the media access control layer (MAC, Media Access Control); the distributed unit is provided with a physical layer protocol stack (PHY, Physical), and the specific implementation of the base station 12 is not limited to these embodiments of the present invention.

A wireless connection can be established between base station 12 and terminal 11 via a wireless air interface. In various embodiments of the invention, the wireless air interface is an air interface based on the 4th generation (4G) mobile network technology standard; or the radio interface is a radio interface based on a 5th generation (5G) mobile network technology standard such as a new radio interface; or the radio interface may also be a radio interface based on the next generation 5G mobile network technology standard.

In some embodiments of the invention, an end-to-end connection (E2E, End to End) can also be established between the terminals 11, for example, in such scenarios as vehicle-to-vehicle communication (V2V, Vehicle to Vehicle), vehicle-to-infrastructure communication (V2I , Vehicle to Infrastructure), vehicle-to-pedestrian communication (V2P, Vehicle to Pedestrian), and vehicle-to-all-object communication (V2X, Vehicle to Everything).

In some embodiments of the invention, the wireless communication system may also contain the device 13 network management.

Several base stations 12 are respectively connected to the network manager 13 . The network control device 13 may be a core network device in a wireless communication system. For example, the network management device 13 may be a Mobility Management Entity (MME) in an Evolved Packet Core (EPC) network. Alternatively, the network manager may also be another core network device such as a serving gateway (SGW, Serving Gate Way), a public data network gateway (PGW, Public Data GateWay), and a policy and charging rules functional block (PCRF, Policy and Charging). Rules Function) or home subscriber server (HSS, Home Subscriber Server), etc. The implementation form of the network control device 13 is not limited in the embodiments of the present invention.

As shown in FIG. 2, some communication networks may provide network segments that support various types of services. As shown in FIG. 2, three different types of services (critical MTS services such as health monitor data, MTS Massive Machine-Type Communications services such as meter reading services, Mobile Broadband Services), e.g. video services) are divided into three network segments. Charging policies, security policies and quality of service policies (QoS, Quality of Service) of the respective network segments may differ. Large consumption of services in one network segment will not affect the normal operation of services in other network segments.

As shown in FIG. 3, the cell corresponding to frequency point f1 of TA 1 and TA 2 supports enhanced mobile broadband (eMBB) network segment, the cell corresponding to frequency point f2 of TA3 supports eMBB and ultra-reliable low latency communication (URLLC, Ultra-Reliable Low Latency Communication) and the cell corresponding to TA2 frequency point f2 supports the eMBB network segment. For a UE that supports eMBB and URLLC network segments, when it is in a cell corresponding to TA1 frequency point f1, the network expects frequency point f2 to be lower than frequency point f1; this requirement cannot be met with dedicated signaling. The proposed solution is that since the UE needs to perform a Tracking Area Update (TAU) when entering a new TA, the network can transmit the updated frequency point priority during the TAU. However, the problem cannot actually be solved because TAU occurs after reselection when the UE has already selected the wrong frequency point based on the previous frequency point priority at the time of reselection. In view of this, as shown in FIG. 4, an embodiment of the invention provides a cell reselection method. The method is applied in the terminal and includes the following steps:

S110: receiving priority information related to TA;

S120: performing cell reselection according to the priority information.

In this embodiment of the present invention, the method can be applied to various terminals supporting network segmentation, and the terminals may include: conventional terminals, IoT terminals, vehicle-mounted terminals, or lightweight terminals. A general terminal may include a mobile phone or the like, such as an LTE terminal or the like.

TA-related priority information in embodiments of the present invention is indication information related to TA-related priorities, for example, including but not limited to TA priority only, TA priority in combination with a carrier, or a supported network segment. Of course, this is only an example, and the specific implementation is not limited to this.

Typically, one TA contains a plurality of adjacent cells.

After receiving the TA-related priority information, the terminal performs cell reselection according to the TA-related priority information. Thus, when different TAs are configured with different network segments, the selection may be made according to priority information related to the TA, which may consider network segmentation. Therefore, at the time of cell reselection of the terminal, reselection is performed not only according to the cell priority or the frequency point priority, so that the reselected cell can reduce the possibility that the communication quality will not be as expected, which is caused because the cell where the terminal is may provide a network segment required or supported by the terminal, and may also improve communication quality and reduce the occurrence of unnecessary cell reselection by the terminal.

In some embodiments, the priority information includes:

a first type of priority indication information indicating a first priority related to the TA; wherein the first priority is the priority of the TA itself.

Here, the first type of priority indication information indicates the priority of said TA. The TA priority here is priority information that describes the priority of the TA itself.

In some embodiments, when the priority of the first HA is higher than the priority of the second HA, the priority of the frequency point supported by the first HA is higher than the priority of the frequency point supported by the second HA.

The higher the TA priority, the higher the priority of the TA frequency point.

The higher the priority of the frequency point, the higher the priority of the network segment supported by the frequency point.

In some embodiments, the priority information includes:

a second type of priority indication information indicating a second priority related to said TA; the second priority is the combined priority of the TA and the frequency point supported by the TA.

The priority information in the embodiments of the present invention may also be the second type of priority indication information, and the second type of priority indication information indicates the combined priority of the TA and the frequency point supported by the TA.

The priority indicated by the second type of priority indication information is the combined priority of the TA and the frequency point supported by the TA, and positively correlates with the individual TA priority and the individual frequency point priority.

Specifically, step S120 may include: performing cell reselection according to the priority information related to the TA, the signal quality of the serving cell, and the signal quality of the neighbor cell. Generally, a cell with high priority and good signal quality is selected as the cell in which the terminal is located.

In embodiments of the invention, step S120 may include:

when the signal quality of the serving cell of the terminal exceeds the first threshold, determining, according to the priority information, whether there is a TA to which the inter-frequency cell belongs, having a TA priority higher than the priority of the TA to which the serving cell of the terminal belongs;

when there is a TA to which the inter-frequency cell belongs having a TA priority higher than the priority of the TA to which the serving cell of the terminal belongs, performing signal quality measurement of the inter-frequency cell; And

performing cell reselection according to the signal quality measurement result of the inter-frequency cell.

The first threshold in this description may be a signal threshold.

Signal quality is the signal quality of a cell, including, but not limited to, the strength of the signal received by the terminal, the strength of the received signal, or the ratio of signal to interference and noise.

If the signal quality of the serving cell exceeds the first threshold, it means that when the terminal performs cell reselection, the signal quality of the serving cell is good and there is no need to perform cell reselection if it is not necessary. Cell reselection should be determined according to the signal quality measurement result.

Here, the TA priority may be the priority indicated by the first priority indication information or the priority indicated by the second priority indication information.

An inter-frequency cell as used herein includes, but is not limited to, an intra-system inter-frequency cell and/or an inter-system inter-frequency cell.

An intra-system inter-frequency cell is a cell that supports another frequency point in the same communication system.

The same communication system in this document may be a system using the same communication standard. For example, a 3G system, a 4G system, or a 5G system are different communication systems.

Different systems usually use different frequency points, so all cells of different systems are inter-frequency cells.

In some embodiments of the invention according to the method,

when there is no TA to which the inter-frequency cell belongs having a TA priority higher than the priority of the TA to which the serving cell of the terminal belongs, signal quality measurement of the inter-frequency cell is not performed.

When there is no neighbor cell with a TA priority higher than that of the serving cell, signal quality measurement of the inter-frequency cell is not required, so that unnecessary signal quality measurement for the inter-frequency signal can be avoided.

In some embodiments of the invention, step S120 may include:

for reselection among the intra system inter frequency cells and the intra system intra frequency cells, determining the signal quality of the intra system inter frequency cell and the intra system intra frequency cell with the same TA priority according to the priority information; And

determining the intra-system inter-frequency cell or the intra-system intra-frequency cell with the highest signal quality as the target cell for cell reselection.

In some cases, the neighboring cells of the serving cell may also include intra-system intra-frequency cells.

Intra-system intra-frequency cells are cells that support the same frequency point in the same communication system.

In embodiments of the present invention, a neighbor cell in the same system is preferably selected. Therefore, in the first place, for reselection among the intra system intra frequency cells and intra system inter frequency cells, when it is determined that the TA priority of the intra system cell (including the intra system intra frequency cell and/or the intra system inter frequency cell) frequency cell) higher than that of the serving cell, the cell with the highest signal quality among intra-system inter-frequency cells or intra-system intra-frequency cells will be used as the target cell for cell reselection.

A cell in the same system is given priority for selection as much as possible, which can reduce the frequent handover of a terminal between different communication systems, and thereby reduce problems that easily occur between handover intervals and are caused by handover between different systems.

In some embodiments of the invention, step S120 may include:

for reselection among intra-system inter-frequency cells, intra-system intra-frequency cells, and inter-system cells, determining according to priority information whether among intra-system inter-frequency cells, intra-system intra-frequency cells and inter-system cells, a cell with a TA priority higher than the combined priority of the serving cell of the terminal; And,

when there is a cell with a TA priority higher than the terminal's serving cell, determining a cell with a TA priority higher than the terminal's serving cell and a signal quality higher than the second threshold as a target cell for cell reselection.

The second threshold in this description may be equal to the first threshold, but is not limited to this. For example, the second threshold may be greater than or less than the first threshold.

If the second threshold is slightly less than the first threshold, then if there is a neighbor cell with a TA priority higher than the serving cell, even if the signal quality is slightly worse than the serving cell, the corresponding neighbor cell will be given priority to ensure that the target cell , reselected by the UE, could provide the network segment required by the terminal, or the network segment supported by the terminal, if possible.

In some embodiments of the invention, performing cell reselection according to the priority information includes:

for reselection among intra-system inter-frequency cells, intra-system intra-frequency cells, and inter-system cells, determining according to priority information whether among intra-system inter-frequency cells, intra-system intra-frequency cells and inter-system cells, a cell with a TA priority equal to or greater than the combined priority of the terminal's serving cell; And,

when there is no cell with a TA priority equal to or higher than the TA priority of the serving cell of the terminal, and if the signal quality of the serving cell of the terminal is below the third threshold, and among the intra-system inter-frequency cells, intra-system intra-frequency cells and inter-system cells, there is cell whose signal quality is higher than the fourth threshold, then the cell whose signal quality is higher than the fourth threshold is used as the target cell for cell reselection.

The fourth threshold in this description may be greater than the third threshold. In this case, if there is a neighbor cell other than the serving cell, such as an intra-system intra-frequency cell, an intra-system inter-frequency cell, and an inter-system cell having a signal quality higher than the fourth threshold, then a cell whose signal quality above the fourth threshold may be used as the target cell for cell reselection.

Of course, the fourth threshold greater than the third threshold is only an example here, and in a particular implementation, it may not be limited to the fourth threshold being greater than the third threshold, and the fourth threshold may also be equal to the third threshold.

In some embodiments of the invention, step S120 may include:

when the signal quality of the serving cell of the terminal exceeds the fifth threshold, determining according to the priority information whether the TA priority of the intra system inter frequency cell and the inter system cell exceeds the TA priority of the serving cell of the terminal;

when the TA priority of the intra system inter frequency cell and the inter system cell exceeds the TA priority of the serving cell of the terminal, performing a signal quality measurement of the intra system inter frequency cell and the inter system cell; selecting an inter-system inter-frequency cell or an inter-system cell as a target cell for cell reselection according to a signal quality measurement result.

When the signal quality of the serving cell of the terminal exceeds the fifth threshold, it indicates that the quality of service of the serving cell is sufficiently good and stable. The fifth threshold herein may be any of the first threshold, second threshold, third threshold, and fourth threshold described above.

In the embodiments of the present invention, if the signal quality of the serving cell exceeds the fifth threshold, it is still determined, according to the TA priority information, whether there is an intra-system inter-frequency cell and an inter-system cell with a TA priority higher than the TA priority of the serving cell. honeycombs. If so, it is necessary to perform signal quality measurement, otherwise, signal quality measurement is not performed, which reduces unnecessary signal quality measurements and reduces power consumption of the terminal.

In some embodiments of the invention, according to the method,

when the TA priority of the intra system inter frequency cell and the inter system cell is lower than the TA priority of the serving cell of the terminal, the signal quality measurement of the intra system inter frequency cell or the inter system cell is not performed.

Thus, when the TA priority of the intra-system inter-frequency cell and the inter-system cell is lower than the TA priority of the serving cell, no inter-frequency signal measurement will be performed. Such inter-frequency signal measurement includes, but is not limited to, signal quality measurement of an intra-system inter-frequency cell or inter-system cell.

In some embodiments of the invention, as shown in FIG. 5, the method also includes the following steps:

S510: receiving system information broadcast by the serving cell of the terminal;

S520: determining the TA to which the neighbor cell belongs according to the TA information carried in the system information, the priority information at least indicating the priority of the TA to which the neighbor cell belongs.

In embodiments of the present invention, the system information broadcast in the serving cell also carries information about the TA to which the neighbor cell belongs, so that the TA of the neighbor cell can be known to make it easier for the terminal to determine the priority information of the TA to which the neighbor cell belongs. neighboring cell.

In some embodiments, said neighbor cell includes at least one of an intra-system intra-frequency cell, an intra-system inter-frequency cell, and an inter-system cell.

Reception of system information broadcast by the serving cell of the terminal includes at least one of the following:

receiving intra system intra frequency cell reselection information broadcast by the serving cell, the intra system intra frequency cell reselection information carrying TA information of the intra system intra frequency cell;

receiving intra system inter frequency cell reselection information broadcast by the serving cell, the intra system inter frequency cell reselection information carrying TA information of the intra system inter frequency cell;

receiving inter-system cell reselection information broadcast by the serving cell, wherein the inter-system cell reselection information carries TA information of the inter-system cell.

The TA information in this description may indicate the TA to which the neighbor cell belongs.

The TA information includes, but is not limited to, the TA identifier.

In some embodiments of the invention, performing cell reselection according to the priority information includes:

according to the priority information, determining that the intra-system inter-frequency cell corresponding to the TA information carried in the system information is a cell reselection candidate cell;

and/or

according to the priority information, determining that the intersystem cell corresponding to the TA information carried in the system information is a candidate cell for cell reselection.

Of course, in some embodiments of the invention, performing cell reselection according to the priority information includes: determining, according to the priority information, that the intra-system intra-frequency cell corresponding to the system information carrying the TA information is a candidate for cell reselection.

In other embodiments of the invention, during cell reselection, the default intra-system intra-frequency cell is a candidate cell for cell reselection.

In the embodiments of the present invention, it is necessary to perform reselection, wherein neighbor cells according to priority information related to a TA in the present invention must be determined based on the information of the TA to which the neighbor cells belong carried in the system information. If information about the TA to which a certain neighbor cell belongs is not carried in the serving cell system information, cell reselection can be performed according to frequency point priority or cell priority instead of TA priority information in the embodiments of the present invention.

Which cells are used as candidate cells for cell reselection based on TA priority information is determined based on intra-system intra-frequency cells, intra-system inter-frequency cells, and inter-system cells, and inter-system cell segment information is carried in the system information transmitted by the serving cell, which reduces the number of unsuitable cell reselection cases due to cell reselection among all cells.

In some embodiments, the method also includes:

receiving a first indication transmitted by the serving cell of the terminal; wherein the first indication is configured to indicate whether the system information broadcast in the serving cell of the terminal can carry TA information.

The determination of the TA to which the neighbor cell belongs according to the TA information carried in the system information includes:

when the first indication is received and the system information does not carry TA information of the neighbor cell, determining that the neighbor cell and the serving cell of the terminal belong to the same TA.

Even if the terminal receives the first indication, the system information received in the serving cell may or may not carry the TA information. If the first indication is received and no TA information is transferred, it is determined that the network segment supported by the frequency point of the neighboring cell is the same as the network segment supported by the frequency point of the serving cell. If the system information carries the TA information, the TA information of the network segment supported by the frequency point of the neighbor cell is determined according to the TA information.

In some embodiments, the method also includes:

receiving a second indication transmitted by the serving cell of the terminal, the second indication being configured to indicate that the serving cell of the terminal and the TAs of the neighbor cell belong to different TAs;

when the first indication is received and the second indication is not received, and the system information does not carry neighboring cell TA information, determining that the neighboring cell and the serving cell of the terminal belong to the same TA.

In some embodiments of the invention, the second indication is also broadcast in the serving cell. The second indication is information configured to indicate whether the TA to which the serving cell belongs is different from the TA to which the neighboring cell belongs.

If the first indication is received and the second indication is not received, and the system information does not carry the neighbor cell TA information, it is determined that the network segment supported by the frequency point of the neighboring cell is the same as the network segment supported by the frequency point of the serving cell of the terminal.

In some embodiments, when the second indication is not received, it may be determined by default that the network segment supported by the neighbor cell's frequency point is the same as the network segment supported by the serving cell's frequency point. In some embodiments of the invention, both the first indication and the second indication may contain only 1 bit and may be broadcast at different times.

In some embodiments of the invention, receiving priority information related to a tracking area (TA) includes:

receiving priority information in a tracking area update (TAU) or radio access network area update (RAU) process of the terminal.

The priority information is received at the time of tracking area update (TAU) or radio access network notification area update (RAU) of the terminal.

The TAU update includes an update of the zone in which the core network is located, and the RAU update includes an update of the zone in which the radio access network is located. Generally speaking, the tracking area (TA) corresponding to the TAU is larger than the notification area (NA, Notification Area) corresponding to the RAU.

During TAU or RAU, priority information is received so that when cell reselection is performed in a TA or notification area, the priority information can be used to perform cell reselection.

For example, the priority information is carried in a completion message or an acknowledgment message TAU or RAU. Thus, when the terminal receives a completion message or an acknowledgment message TAU or RAU, the priority information is received.

In some embodiments, receiving TA-related priority information includes:

receiving Radio Resource Control (RRC) connection release information carrying priority information when the terminal releases the RRC connection.

When the terminal releases a radio resource control (RRC) connection, it receives RRC release information carrying the first priority information.

In some embodiments of the invention, the terminal releases the RRC connection via an RRC connection release message to exit the connection state and enter the idle or idle state. Thus, when re-entering the connection state, cell reselection will be performed so that the cell selection associated with the network segment can be performed in time according to the first priority information carried in the RRC connection release message.

In embodiments of the invention, TA-related priority information is not transmitted using special information and received using information used in an existing process, which ensures good compatibility with existing technology and reduces unnecessary terminal reception. Moreover, the priority information received in the TAU, RAU and connection release messages can be immediately used in the next cell reselection, which reduces delays.

As shown in FIG. 6, an embodiment of the invention proposes a method for transmitting information. The method is applied in the base station and includes the following steps:

S610: Outputting priority information related to the TA, wherein the priority information is configured for terminal cell reselection.

The base station in this embodiment of the present invention may be a 3G base station, a 4G base station or a 5G base station, or any next generation base station after the 5G base station.

In this embodiment of the present invention, the base station outputs the TA-related priority information, and after the TA-related priority information is issued to the terminal, the terminal can perform cell reselection.

In embodiments of the present invention, the TA-related priority information in this description may be priority information detailed at the UE level, that is, the priority information received by different terminals is different.

In some embodiments, the priority information includes:

a first type of priority indication information indicating a first priority; the first priority is the priority of the TA itself.

In some embodiments, when the priority of the first HA is higher than the priority of the second HA, the priority of the frequency point supported by the first HA is higher than the priority of the frequency point supported by the second HA.

When the priority of said TA is higher, the priority of the frequency point supported by the TA is also higher.

In some embodiments, the priority information includes:

a second type of priority indication information indicating a second priority related to said TA; the second priority is the combined priority of the TA and the frequency point supported by the TA.

The priority indicated by the second type of priority indication information is the combined priority of the TA and the frequency point supported by the TA.

In some embodiments, the method also includes:

broadcasting the first indication in the serving cell, the first indication being configured to indicate whether the system information broadcast in the serving cell of the terminal can carry TA information.

In embodiments of the present invention, the first indication is broadcast in the serving cell, and the first indication informs whether the serving cell system information of the terminal carries TA information of the neighbor cell.

For example, the output of priority information related to a TA includes:

according to the first indication, outputting system information carrying TA information when the TA to which the serving cell of the terminal belongs is different from the TA to which the neighboring cell belongs. The priority information at least indicates the priority of said TA corresponding to the broadcast TA information.

Serving cells corresponding to terminals located in different cells are different.

If the TA to which the serving cell belongs is different from the TA to which the neighbor cell belongs, the TA information can be carried in the system information to specifically indicate the TA to which the neighbor cell belongs.

If the serving cell and the neighbor cell belong to the same TA, the TA information may not be carried in the system information, which reduces the overhead of the system information in the serving cell.

In some embodiments of the invention, the output of system information carrying information about the TA includes:

broadcasting intra system intra frequency cell reselection information to the serving cell, wherein the intra system intra frequency cell reselection information carries TA information of the intra system intra frequency cell;

broadcasting intra system inter frequency cell reselection information in the serving cell, wherein the intra system inter frequency cell reselection information carries TA information of the intra system inter frequency cell;

broadcasting the inter-system cell reselection information to the serving cell, wherein the inter-system cell reselection information carries the TA information of the inter-system cell.

In some embodiments, the intra-system intra-frequency cell reselection information includes, but is not limited to, System Information Block Type 3 (SIB3). The intra-system inter-frequency cell reselection information may include, but is not limited to, SIB4. The inter-system cell reselection information includes, but is not limited to, SIB5.

In some embodiments of the invention, when issuing priority information related to a TA,

according to the first indication, the TA information in the system information is not transferred when the serving cell of the terminal and the neighbor cell belong to the same TA. The priority information at least indicates the priority of the TA to which the neighbor cell belongs.

In some embodiments, the method also includes:

broadcasting a second indication in the serving cell, the second indication being configured to indicate that the TA to which the serving cell of the terminal belongs is different from the TA to which the neighboring cell belongs; wherein the system information is configured to carry the TA information after the first indication and the second indication are broadcast.

In some embodiments of the invention, step S610 may include issuing priority information in a TAU or RAU process of the terminal.

Priority information is issued in the TAU and RAU process instead of using dedicated signaling to issue priority information, which is compatible with related technologies and reduces signaling overhead.

In other embodiments, step S610 may include: when the terminal releases the RRC connection, outputting RRC connection release information carrying priority information.

When the terminal releases the RRC connection and switches from the connected state to the idle state or the idle state, the terminal receives an RRC connection release message, and the first priority information can be obtained from the RRC connection release message.

As shown in FIG. 7, an embodiment of the invention provides a device for cell reselection. The device is used in the terminal and contains:

a first receiving module 710 configured to receive priority information related to a tracking area (TA); And

a reselection module 720 configured to perform cell reselection according to the priority information.

In some embodiments, the first receive module 710 and the reselection module 720 may be software modules, and the software modules, upon execution by the processor, may receive the first priority information and perform cell reselection.

In some embodiments, the first receive module 710 and the reselection module 720 may be a combination of software and hardware; the combination of software and hardware may contain various programmable matrices; programmable matrices include, but are not limited to, complex programmable matrices or user-programmable matrices.

In other embodiments, the first receive module 710 and the reselection module 720 may also comprise pure hardware modules. A purely hardware module may comprise an ASIC.

In some embodiments, the priority information includes:

a first type of priority indication information indicating a first priority; wherein the first priority is the priority of the TA itself.

In some embodiments, when the priority of the first HA is higher than the priority of the second HA, the priority of the frequency point supported by the first HA is higher than the priority of the frequency point supported by the second HA.

In some embodiments, the priority information includes:

a second type of priority indication information indicating a second priority related to said TA; the second priority is the combined priority of the TA and the frequency point supported by the TA.

In some embodiments, the reselection module 720 is configured to, when the signal quality of the serving cell of the terminal exceeds the first threshold, to determine, according to priority information, whether there is a TA to which an inter-frequency cell belongs having a TA priority higher than a TA priority of the serving cell of the terminal according to the priority information; when there is a TA to which the inter-frequency cell belongs having a TA priority higher than the priority of the TA to which the serving cell of the terminal belongs, perform signal quality measurement of the inter-frequency cell; and perform cell reselection according to the signal quality measurement result of the inter-frequency cell.

In some embodiments of the invention, the device also contains:

a first measurement module configured such that, when there is no TA to which an inter-frequency cell having a TA priority higher than that of the TA to which the serving cell of the terminal belongs, does not perform signal quality measurement of the inter-frequency cell.

In some embodiments, the reselection module 720 is configured to determine the signal quality of the intra-system inter-frequency cell or the intra-system intra-frequency cell with the same a TA priority according to the priority information; determine the intra-system inter-frequency cell or the intra-system intra-frequency cell with the highest signal quality as the target cell for cell reselection.

In some embodiments, the reselection module 720 is configured to determine, in order to reselect among intra-system inter-frequency cells, intra-system intra-frequency cells, and inter-system cells, according to the priority information, whether among the intra-system inter-frequency cells, intra-system intra-frequency cells, and inter-system cells, a cell with a TA priority higher than the TA priority of the serving cell of the terminal; and, when there is a cell with a TA priority higher than the TA priority of the serving cell of the terminal, determine a cell with a TA priority higher than the TA priority of the serving cell of the terminal and a signal quality higher than the second threshold as the target cell for cell reselection.

In some embodiments, the reselection module 720 is configured to determine, in order to reselect among intra-system inter-frequency cells, intra-system intra-frequency cells, and inter-system cells, according to the priority information, whether among the intra-system inter-frequency cells, intra-system intra-frequency cells and inter-system cells a cell with a TA priority equal to or greater than the TA priority of the serving cell of the terminal; when there is no cell with a TA priority equal to or higher than the TA priority of the serving cell of the terminal, if the signal quality of the serving cell of the terminal is lower than the third threshold, and there is a cell among the intra-system inter-frequency cells, intra-system intra-frequency cells and inter-system cells with a signal quality above the fourth threshold, determine a cell with a signal quality above the fourth threshold as a target cell for cell reselection.

In some embodiments, the reselection module 720 is configured to perform the following: when the signal quality of the serving cell of the terminal is higher than the fifth threshold, determining, according to the priority information, whether the TA priority of the intra-system inter-frequency cell and the inter-system cell exceeds the TA priority of the serving cell of the terminal ; when the TA priority of the intra system inter frequency cell and the inter system cell exceeds the TA priority of the serving cell of the terminal, performing a signal quality measurement of the intra system inter frequency cell and the inter system cell; selecting an intra-system inter-frequency cell or an inter-system cell as a target cell for cell reselection according to a signal quality measurement result.

In some embodiments of the invention, the device also contains:

a second measurement unit configured to not perform signal quality measurement of the intra system inter frequency cell or the inter system cell when the TA priority of the intra system inter frequency cell and the inter system cell is lower than the TA priority of the serving cell of the terminal .

In some embodiments, the first receiving module 710 is also configured to receive system information broadcast by the serving cell of the terminal.

The device also contains:

a determining unit configured to determine the TA to which the neighbor cell belongs according to the TA information carried in the system information, the priority information at least indicating the priority of the TA to which the neighbor cell belongs.

In some embodiments, the neighbor cells include at least one of an intra-system intra-frequency cell, an intra-system inter-frequency cell, and an inter-system cell.

The first receiving module 710 is configured to receive system information broadcast by the serving cell of the terminal through at least one of the following:

receiving intra system intra frequency cell reselection information broadcast by the serving cell, the intra system intra frequency cell reselection information carrying TA information of the intra system intra frequency cell;

receiving intra system inter frequency cell reselection information broadcast by the serving cell, wherein the intra system inter frequency cell reselection information carries TA information of the intra system inter frequency cell;

receiving inter-system cell reselection information broadcast by the serving cell, wherein the inter-system cell reselection information carries TA information of the inter-system cell.

In some embodiments, the reselection module 720 is configured to determine, according to the priority information, that the intra-system inter-frequency cell corresponding to the TA information carried in the system information is a cell reselection candidate cell;

and/or

determining, according to the priority information, that the intersystem cell corresponding to the TA information carried in the system information is a candidate cell for cell reselection.

In some embodiments, the first receiving module 710 is also configured to receive the first indication transmitted by the serving cell of the terminal; wherein the first indication is configured to indicate whether the system information broadcast in the serving cell of the terminal can carry TA information.

The determining unit is configured to determine that the neighbor cell and the serving cell of the terminal belong to the same TA when the first indication is received and the system information does not contain information about the TA of the neighbor cell.

In some embodiments, the first receiving module 710 is configured to receive a second indication transmitted by the serving cell of the terminal, wherein the second indication is configured to indicate that the TA to which the serving cell of the terminal belongs is different from the TA to which the neighboring cell belongs.

The determining unit is configured to determine that the neighbor cell and the serving cell of the terminal belong to the same TA when the first indication is received and the second indication is not received and the system information does not carry neighbor cell TA information.

In some embodiments, the first receiving module 710 is configured to receive priority information in a tracking area update (TAU) or radio access network (RAU) notification area update process of the terminal.

In some embodiments, the first receiving module 710 is configured to receive RRC connection release information carrying priority information when the terminal releases a Radio Resource Control (RRC) connection.

As shown in FIG. 8, an embodiment of the invention provides a device for transmitting information. The device is used in a base station and contains:

an issuer 810, configured to issue priority information related to the TA, wherein the priority information is configured for cell reselection of the terminal.

In some embodiments of the invention, issuer 810 may be a software module that may issue first priority information upon execution by the processor.

In some embodiments, dispenser 810 may be a combined firmware/hardware module; the combined firmware and hardware module may contain various programmable matrices; programmable matrices include, but are not limited to, complex programmable matrix or user programmable matrix.

In other embodiments of the invention, dispenser 810 may also comprise a pure hardware module. A purely hardware module may comprise an ASIC.

In some embodiments, the priority information includes:

a first type of priority indication information indicating a first priority related to said TA, the first priority being a priority of the TA itself.

In some embodiments, when the priority of the first HA is higher than the priority of the second HA, the priority of the frequency point supported by the first HA is higher than the priority of the frequency point supported by the second HA.

In some embodiments, the priority information includes:

a second type of priority indication information indicating a second priority related to said TA; wherein the second priority is the combined priority of the TA and the frequency point supported by the TA.

In some embodiments of the invention, the device also contains:

a broadcasting module configured to broadcast a first indication in the serving cell, the first indication configured to indicate whether system information broadcast in the serving cell of the terminal can carry TA information. The priority information at least indicates the priority of said TA corresponding to the broadcast TA information.

In some embodiments, the issuer 810 is configured to issue, according to the first indication, system information carrying TA information when the TA to which the serving cell of the terminal belongs is different from the TA to which the neighbor cell belongs.

In some embodiments, the issuer 810 is configured to broadcast the intra system intra frequency cell reselection information in the serving cell of the terminal, where the intra system intra frequency cell reselection information carries the intra system intra frequency cell TA information. frequency cell; broadcasting intra system inter frequency cell reselection information in the serving cell of the terminal, wherein the intra system inter frequency cell reselection information carries TA information of the intra system inter frequency cell; broadcasting the inter-system cell reselection information in the serving cell of the terminal, wherein the inter-system cell reselection information carries the TA information of the inter-system cell.

In some embodiments, issuer 810 is configured to not carry TA information in system information according to the first indication when the serving cell of the terminal and the neighbor cell belong to the same TA.

In some embodiments, the broadcast module is also configured to broadcast a second indication in the serving cell of the terminal, the second indication being configured to indicate that the TA to which the serving cell of the terminal belongs is different from the TA to which the neighboring cell belongs. The system information is configured to carry the TA information after broadcasting the first indication and the second indication.

In some embodiments, issuer 810 is configured to issue priority information when the terminal is in a TAU or RAU process.

In some embodiments, issuer 810 is configured to output priority information carrying RRC connection release information when the terminal releases the RRC connection.

One or more examples are presented below in connection with any of the above described embodiments of the invention:

The UE receives the TA (tracking area) priority issued by the base station through dedicated signaling.

The TA priority may also include: the combined priority of the frequency point supported by the TA and the TA. The UE determines the cell reselection priority based on the TA priority information or the TA and frequency point combination priority information, and then performs cell reselection.

According to the TA priority information, the TA priority can be obtained, for example, TA1>TA2>TA3. The combination priority information of TA and frequency point can be obtained, for example, TA1+f1>TA2+f1=TA1+f2>TA2+f2. The priority of the combination of TA and frequency point supported by TA can be obtained, for example, TA3>TA1f1>TA2f2>TA1f2>TA2f1>f3. In this example, if only a TA is specified without a corresponding frequency point, such as TA3, this means that it applies to all TA frequency points; if only a frequency point is specified without a corresponding TA, for example f3, this means that the priority of the frequency point does not require the TA factor to be taken into account.

In some cases, in order to reselect intra-system intra-frequency cell (intra-freq) and intra-system inter-frequency cell (inter-freq) for cells with the same freq+TA priority, the UE sorts the cells according to signal quality, and then performs cell reselection. The freq+TA priority is the TA priority and the frequency point supported by the TA in the TA priority in the above-described embodiment.

In some cases, to reselect intra-frequency (intra-freq), inter-frequency (inter-freq) and inter-RAT (RAT, Radio Access Technology) (inter-RAT) cells, if the priority of freq + TA is higher than the priority of freq + TA serving cell, and there is a cell with freq+TA whose signal quality is above a certain threshold, the UE reselects the freq+TA cell (corresponding to the TA indicated by freq+TA and the freq frequency point supported by the TA). One TA may support one or more frequency points. The priorities of the same TA combined with different frequency points may be the same or different.

In some cases, for intra-freq, inter-freq and inter-RAT cell reselection, if the freq+TA priority is lower than the serving cell's freq+TA priority, the signal quality of the serving cell is below a certain threshold, and there is a cell belonging to freq+TA, whose signal quality is above a certain threshold, the UE reselects freq+TA.

In some cases, the UE receives the frequency point and/or frequency point neighbor cell TA information broadcast by the serving cell and uses this information to determine the corresponding frequency point and/or frequency point neighbor cell TA when performing cell reselection.

For intra-system intra-frequency cells, for example, the TA corresponding to the neighbor cell is indicated in the intra-system intra-frequency cell list (intraFreqNeighCellList) in SIB3.

For intra system inter frequency cells, for example, the TA corresponding to the frequency point (freq) is indicated in the intra system inter frequency cell information (InterFreqCarrierFreqInfo) in SIB4, or the TA corresponding to the neighbor cell is indicated in the intra system information. - system inter-frequency cell (InterFreqCarrierFreqInfo) information about the carrier frequency of the intra-system inter-frequency cell (interFreqNeighCellInfo). The specified TA corresponding to freq indicates that the TAs of all neighbor cells with freq are the same.

For example, for inter-RAT, the TA corresponding to freq is indicated in the carrier frequency information (CarrierFreqEUTRA) SIB5, or the TA corresponding to the neighbor cell is indicated in the neighbor cell frequency point information (EUTRA-FreqNeighCellInfo) CarrierFreqEUTRA.

The UE can acquire the neighbor cell of the TA area by system information, and the UE does not need to acquire the TA by reading the system information of the neighbor cell.

The UE only performs inter-frequency or inter-RAT cell reselection only at frequency points broadcast by the system.

In some cases, if the signal quality of the serving cell exceeds a certain threshold, and the neighboring intra-frequency cells and the corresponding TA specified in the system information do not have neighbor cells with a higher priority than the serving cell and the corresponding TA, the UE may not perform intra-frequency -frequency measurement; otherwise, the UE needs to perform an intra-frequency measurement.

In some cases, if the signal quality of the serving cell is above a certain threshold, for an inter-frequency or inter-RAT frequency point specified in the system information and the corresponding TA, in the absence of another frequency point and the corresponding TA whose priority is higher than the priority of the corresponding frequency point + TA of the serving cell, the UE may not perform an inter-frequency or inter-RAT measurement at that frequency point.

In some cases, the UE receives an indication broadcast by the base station as to whether TA broadcast is supported, and the UE determines the TA corresponding to the frequency point neighbor cell and/or frequency point by the indication and determines whether there is information about the TA, indicated at the frequency point and/or adjacent cell of the frequency point.

In some cases, if the base station broadcasts an indication to support TA broadcasting, if the frequency point indicated in the system information (if the neighbor cell is not indicated for the frequency point) does not indicate the corresponding TA, or neither the frequency point neighbor cell nor frequency point indicated in the system information does not indicate the corresponding TA, the frequency point or neighbor cell is considered to have the same TA as the serving cell.

In some cases, if the base station broadcasts an indication that TA broadcast is not supported, the UE cannot determine the TA of the frequency point and the neighbor cell through the system information.

In some cases, when the UE is in the TAU/RAU state, the network transmits updated information about the priority of a TA (tracking area) or the priority of a combination of TA and frequency point.

The update may be sent with an RRC connection release message.

In some cases, the UE receives an indication broadcast by the base station as to whether there is a neighbor cell whose TA is different from the TA of the serving cell. If there is no indication, the UE considers that all neighbor cells belong to the same TA as the serving cell. If there is an indication and the frequency point indicated in the system information (if the neighbor cell is not indicated in the frequency point) does not indicate the corresponding TA, or the frequency point neighbor cell and/or frequency point indicated in the system information does not indicate the corresponding TA, it is considered that the frequency point or neighbor cell has the same TA as the serving cell.

In some cases, if the base station does not broadcast an indication of whether there is a neighbor cell whose TA is different from the TA of the serving cell, the UE cannot determine the TA of the frequency point and the neighbor cell through the system information.

With regard to terminal 800 shown in FIG. 9, an embodiment of the invention provides a terminal 800. The terminal may specifically be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, and the like.

As shown in FIG. 9, terminal 800 may include one or more of the following components: a processing component 802, a memory 804, a power component 806, a multimedia component 808, an audio component 810, an input/output (I/O, Input/Output) interface 812, a sensor component 814, and component 816 communication.

The processing component 802 generally manages the overall operation of the terminal 800, such as operations related to display, data transmission, telephone calls, camera operation, and recording operations. Processing component 802 may include one or more processors 820 for executing instructions for performing all or part of the steps in the methods described above. In addition, the processing component 802 may include one or more modules that provide interaction between the processing component 802 and other components. For example, processing component 802 may include a media module that facilitates interaction between multimedia component 808 and processing component 802.

The memory 804 is configured to store various types of data to support the operation of the terminal 800. Examples of such data include commands for any applications or methods used in the terminal 800, contact data, phone book data, messages, images, video data, and the like. The memory 804 can be implemented using any type of volatile or nonvolatile storage devices or combinations thereof, such as static random access memory (SRAM, Static Random Access Memory), electrically erasable programmable read-only memory (EEPROM, Electrically Erasable Programmable Read-Only Memory), erasable programmable read-only memory (EPROM, Erasable Programmable Read-Only Memory), programmable read-only memory (PROM, Programmable Read-Only Memory), read-only memory (ROM, Read-Only Memory), magnetic memory, flash memory, magnetic or optical disk.

Power component 806 provides power to various components of terminal 800. Power component 806 may include a power management system, one or more power supplies, and other components associated with the generation, control, and distribution of electrical power at terminal 800.

The multimedia component 808 includes a screen that provides an output interface between the terminal 800 and the user. In some embodiments of the invention, the screen may be a liquid crystal display (LCD, Liquid Crystal Display) and a touch panel (TP, Touch Panel). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input from a user. The touchpad includes one or more touch sensors for recognizing taps, swipes, and gestures on the touchpad. The touch sensors can not only detect the area of touch or slide, but also determine the duration and pressure associated with touch or slide operations. In some embodiments of the invention, the media component 808 includes a front camera and/or a rear camera. The front camera and/or the rear camera can receive external media while the terminal 800 is in an operating mode, such as a photo mode or a video mode. Both the front and rear cameras can be equipped with a fixed optical lens system or have optical focus and zoom capabilities.

The audio component 810 is configured to output and/or input audio signals. For example, the audio component 810 includes a microphone (MIC) that is configured to receive an external audio signal when the terminal 800 is in an operating mode such as making a call, recording, and voice recognition. The received audio signal can then be stored in the memory 804 or transmitted through the communication component 816 . In some embodiments, the audio component 810 also includes a speaker for outputting audio signals.

An input/output (I/O) interface 812 provides an interface between the processing component 802 and peripheral interface modules such as a keyboard, mouse wheel, buttons, and the like. These buttons may include, but are not limited to, a home button, a volume button, a start button, and a lock button.

The sensor component 814 includes one or more sensors for obtaining evaluations of various aspects of terminal 800 operation. terminal 800, presence or absence of user contact with terminal 800, orientation or acceleration/deceleration of terminal 800, and temperature change of terminal 800. Sensors component 814 may also include a proximity sensor configured to detect the presence of nearby objects without physically contacting them. The sensor component 814 may also include an optical sensor, such as a Complementary Metal Oxide Semiconductor (CMOS) or Charge Coupled Device (CCD) image sensor, for use in imaging applications. In some embodiments, sensor component 814 may also include an acceleration sensor, a gyro sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 816 is configured to provide wired or wireless communication between terminal 800 and other devices. Terminal 800 may access a wireless network based on communication standards such as Wi-Fi, 2G, 3G, or combinations thereof. In one embodiment, communication component 816 receives a broadcast signal or broadcast-related information from an external broadcast control system via a broadcast channel. In one embodiment, communication component 816 also includes a Near Field Communication (NFC) module for communicating over short distances. For example, the NFC module can be implemented based on radio frequency identification (RFID, Radio Frequency Identification), a technology developed by the Infrared Data Association (IrDA), ultra-wideband (UWB, Ultra-Wideband) communication technology, Bluetooth technology (BT) and other technologies.

In exemplary embodiments, terminal 800 may be implemented using one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), programmable logic devices (PLD, Programmable Logic Device), field programmable gate arrays (FPGA, Field Programmable Gate Array), controllers, microcontrollers, microprocessors or other electronic components designed to perform the methods described above.

The exemplary embodiment also provides a computer-readable storage medium, such as a memory 804, containing instructions that can be executed by the processor 820 of the terminal 800 to perform the method described above. For example, a computer-readable storage medium can be Read Only Memory (ROM), Random Access Memory (RAM), CD-ROM, Compact Disk Read Only Memory, magnetic tape, floppy disk, optical device. data storage, etc.

Fig. 10 is a block diagram of a base station 900 in accordance with an exemplary embodiment of the invention. For example, base station 900 may be provided as a network device. As shown in FIG. 10, base station 900 includes a processing component 922, which also includes one or more processors, and memory resources represented by memory 932 for storing instructions executed by processing component 922, such as application programs. Application programs stored in memory 932 may include one or more modules, each corresponding to a set of instructions. In addition, the processing component 922 is configured to execute instructions for performing the cell reselection method or the information transmission method provided by any of the method embodiments described above, for example, the method shown in FIG. 2, fig. 3 and/or FIG. 6.

The base station 900 may also include a power component 926 configured to power the base station 900, a wired or wireless network interface 950 configured to connect the base station 900 to a network, and an input/output (I/O) interface 958. Base station 900 may operate on an operating system stored in memory 932 such as Windows Server™, Mac OS X™, Unix™, Linux™, FreeBSD™, and the like.

The wireless network interface 950 includes, but is not limited to, the antenna of the communication device described above. Those skilled in the art will appreciate other embodiments of the invention from a consideration of the description and practice of the invention. This application is intended to cover any variation, use, or adaptation of the invention that follows the general principles of the invention and includes well-known or conventional methods in the art not listed here. The description and examples are to be considered as illustrative only, the scope and spirit of the invention being defined by the claims.

It should be understood that the present application is not limited to the exact construction that has been described above and illustrated in the accompanying drawings, and various modifications and changes can be made within the gist of the invention. The scope of the invention is defined only by the claims.

Claims (72)

1. Method of cell reselection performed by the terminal and including: receiving information about the priority of the tracking area (TA); performing cell reselection according to the priority information, wherein the priority information comprises the combined priority of the TA and the frequency point. 2. The method of claim 1, wherein the priority information comprises: a first type of priority indication information indicating a first priority related to said TA, the first priority being a priority of the TA itself. 3. The method of claim 2, wherein, in response to the priority of the first HA being higher than the priority of the second HA, the priority of the frequency point supported by the first HA is higher than the priority of the frequency point supported by the second HA. 4. The method according to claim 1, wherein the priority information comprises: a second type of priority indication information indicating a second priority related to said TA, wherein the second priority is a combined priority of the TA and the frequency point supported by the TA. 5. The method according to any one of paragraphs. 1-4, wherein performing cell reselection according to the priority information includes: in response to the signal quality of the serving cell of the terminal exceeding the first threshold, determining whether there is a TA to which the inter-frequency cell belongs having a TA priority higher than the TA priority of the serving cell of the terminal according to the priority information; in response to determining that there is a TA to which the inter-frequency cell belongs having a TA priority higher than the priority of the TA to which the serving cell of the terminal belongs, performing a signal quality measurement of the inter-frequency cell; performing cell reselection according to the signal quality measurement result of the inter-frequency cell, wherein, in response to determining that there is no TA to which the inter-frequency cell belongs having a TA priority higher than the priority of the TA to which the serving cell of the terminal belongs, signal quality measurement of the inter-frequency cell is not performed. 6. The method according to any one of paragraphs. 1-4, wherein performing cell reselection according to the priority information includes: for reselection among the intra system inter frequency cells and the intra system intra frequency cells, determining the signal quality of the intra system inter frequency cell or the intra system intra frequency cell with the same TA priority according to the priority information; determining the intra-system inter-frequency cell or the intra-system intra-frequency cell with the highest signal quality as the target cell for cell reselection. 7. The method according to any one of paragraphs. 1-4, wherein performing cell reselection according to the priority information includes: for reselection among intra-system inter-frequency cells, intra-system intra-frequency cells, and inter-system cells, determining according to priority information whether among intra-system inter-frequency cells, intra-system intra-frequency cells and inter-system cells, a cell with a TA priority higher than the TA priority of the serving cell of the terminal; in response to determining that there is a cell with a TA priority higher than the TA priority of the terminal's serving cell, determining a cell with a TA priority higher than the TA priority of the terminal's serving cell and a signal quality higher than the second threshold as a target cell for cell reselection. 8. The method according to any one of paragraphs. 1-4, wherein performing cell reselection according to the priority information includes: for reselection among intra-system inter-frequency cells, intra-system intra-frequency cells, and inter-system cells, determining according to priority information whether among intra-system inter-frequency cells, intra-system intra-frequency cells and inter-system cells, a cell with a TA priority greater than or equal to the TA priority of the serving cell of the terminal; in response to determining that there is no cell with a TA priority greater than or equal to the TA priority of the serving cell of the terminal, and in response to the signal quality of the serving cell of the terminal being below the third threshold, and among intra-system inter-frequency cells, intra- system intra-frequency cells and inter-system cells, there is a cell with signal quality above the fourth threshold, determining a cell with signal quality above the fourth threshold as the target cell for cell reselection. 9. The method according to any one of paragraphs. 1-4, wherein performing cell reselection according to the priority information includes: in response to the signal quality of the serving cell of the terminal exceeding the fifth threshold, determining according to the priority information whether the TA priority of the intra-system inter-frequency cell and the inter-system cell exceeds the TA priority of the serving cell of the terminal; in response to the TA priority of the intra system inter frequency cell and the inter system cell exceeding the TA priority of the serving cell of the terminal, performing a signal quality measurement of the intra system inter frequency cell and the inter system cell; selecting an intra-system inter-frequency cell or an inter-system cell as a target cell for cell reselection according to a signal quality measurement result, wherein, in response to the fact that the TA priority of the intra system inter frequency cell and the inter system cell is lower than the TA priority of the serving cell of the terminal, signal quality measurement of the intra system inter frequency cell or the inter system cell is not performed. 10. The method according to any one of paragraphs. 1-4, also including: receiving system information broadcast by the serving cell of the terminal; determining the TA to which the neighbor cell belongs according to the TA information carried in the system information, wherein the priority information at least indicates the priority of the TA to which the neighbor cell belongs, wherein said neighbor cell includes at least one of an intra-system intra-frequency cell, an intra-system inter-frequency cell, and an inter-system cell; receiving system information broadcast by the serving cell of the terminal includes at least one of the following: receiving intra system intra frequency cell reselection information broadcast by the serving cell, the intra system intra frequency cell reselection information carrying TA information of the intra system intra frequency cell; receiving intra system inter frequency cell reselection information broadcast by the serving cell, wherein the intra system inter frequency cell reselection information carries TA information of the intra system inter frequency cell; receiving inter-system cell reselection information broadcast by the serving cell, wherein the inter-system cell reselection information carries TA information of the inter-system cell, wherein performing cell reselection according to the priority information includes: determining, according to the priority information, that the intra-system inter-frequency cell corresponding to the TA information carried in the system information is a candidate cell for cell reselection; and/or determining, according to the priority information, that the inter-system cell corresponding to the TA information carried in the system information is a candidate cell for cell reselection. 11. The method according to p. 10, also including: receiving a first indication transmitted by the serving cell of the terminal; wherein the first indication is configured to indicate whether the system information broadcast in the serving cell of the terminal can carry TA information; determining the TA to which the neighbor cell belongs according to the TA information carried in the system information includes: in response to receiving the first indication and the system information does not carry TA information of the neighbor cell, determining that the neighbor cell and the serving cell of the terminal belong to the same TA. 12. The method according to p. 11, also including: receiving a second indication transmitted by the serving cell of the terminal, the second indication being configured to indicate that the TA to which the serving cell of the terminal belongs is different from the TA to which the neighboring cell belongs; in response to receiving the first indication and the system information does not carry neighbor cell TA information, determining that the neighbor cell and the serving cell of the terminal belong to the same TA includes: in response to receiving the first indication and not receiving the second indication, and the system information does not carry neighboring cell TA information, determining that the neighboring cell and the serving cell of the terminal belong to the same TA. 13. The method of claim 1, wherein receiving the TA-related priority information includes: receiving priority information when updating a tracking area (TAU) or updating a radio access network notification area (RAU) of the terminal. 14. The method of claim 1, wherein receiving the TA-related priority information includes: receiving Radio Resource Control (RRC) connection release information carrying priority information in response to the terminal releasing the RRC connection. 15. The method of transmitting information performed by the base station and including: outputting priority information related to the TA, wherein the priority information is configured for terminal cell reselection, wherein the priority information comprises the combined priority of the TA and the frequency point. 16. The method according to p. 15, also including: broadcasting a first indication in the serving cell, the first indication configured to indicate whether system information broadcast in the serving cell of the terminal can carry TA information; wherein the priority information at least indicates the priority of said TA corresponding to the TA information being broadcast. 17. The method of claim 16, wherein providing priority information related to the TA includes: according to the first indication, issuing system information carrying TA information in response to the fact that the TA to which the serving cell of the terminal belongs is different from the TA to which the neighboring cell belongs; according to the first indication, the TA information is not carried in the system information, in response to the serving cell of the terminal and the neighboring cell belong to the same TA, wherein the output of system information carrying the TA information includes at least one of the following: broadcasting intra system intra frequency cell reselection information to the serving cell of the terminal, wherein the intra system intra frequency cell reselection information carries TA information of the intra system intra frequency cell; broadcasting intra system inter frequency cell reselection information to the serving cell of the terminal, wherein the intra system inter frequency cell reselection information carries TA information of the intra system inter frequency cell; broadcasting the inter-system cell reselection information to the serving cell of the terminal, wherein the inter-system cell reselection information carries the TA information of the inter-system cell. 18. The method according to p. 17, also including: broadcasting a second indication in the serving cell of the terminal, the second indication being configured to indicate that the TA to which the serving cell of the terminal belongs is different from the TA to which the neighboring cell belongs; wherein the system information is configured to carry the TA information after broadcasting the first indication and the second indication. 19. A communication device, comprising: antenna; memory; a processor connected respectively to the antenna and the memory, configured to control the antenna for transmitting and receiving radio signals by executing an executable program stored in the memory, and capable of performing the steps of the method according to any one of paragraphs. 1-14. 20. A communication device, comprising: antenna; memory; a processor connected respectively to the antenna and the memory, configured to control the antenna for transmitting and receiving radio signals by executing an executable program stored in the memory, and capable of performing the steps of the method according to any one of paragraphs. 15-18.

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