CN114390600A

CN114390600A - Cell reselection method, device, terminal and network side equipment

Info

Publication number: CN114390600A
Application number: CN202011108779.0A
Authority: CN
Inventors: 张晓然; 胡南; 陈宁宇
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2020-10-16
Filing date: 2020-10-16
Publication date: 2022-04-22

Abstract

The invention provides a cell reselection method, a cell reselection device, a terminal and network side equipment, wherein the cell reselection method comprises the following steps: receiving the identity identification information of a cell sent by network side equipment; performing cell reselection according to the identity identification information; the identity identification information comprises first class identity identification information and second class identity identification information; the first type identity information indicates that the corresponding cell is a first type cell, and the cell reselection priority of the first type cell is the highest under the condition that the terminal is in or enters a first state; the second type of identity information indicates that the corresponding cell is a second type of cell, and the cell reselection priority of the second type of cell is only lower than that of the first type of cell when the terminal is in or enters the first state. The method and the device solve the problem that in the cell reselection scheme in the prior art, the high-speed terminal cannot be reselected to other better cells after accessing the high-speed cell.

Description

Cell reselection method, device, terminal and network side equipment

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a cell reselection method, an apparatus, a terminal, and a network device.

Background

The LTE (long term evolution) introduces a high-speed indication of a cell level to solve the problem of 'private network dedicated residence' of a high-speed rail, namely, the high-speed rail private network only serves high-speed rail users, and avoids non-high-speed rail users from accessing the private network and competing resources. If the terminal judges that the terminal is in a high-speed state, the terminal regards the cell with the high-speed indication as the highest reselection priority; and if the terminal judges that the terminal is in a non-high-speed state, the terminal regards the cell with the high-speed indication as the lowest reselection priority. And the terminal judges whether the terminal belongs to a high-speed state according to the number of reselected cells within a certain time.

Further, in order to ensure that the user of the high-speed rail has better user experience, it is an effective way to relay signals by using other devices (e.g., relay device/CPE (customer premise equipment)/IAB (integrated access and backhaul) device, etc.) in the car of the high-speed rail to serve the user in the car.

However, the current prior art mainly solves the scene problem that the high-speed rail network directly covers the terminal in the carriage, and if the high-speed rail coverage performance is considered to be enhanced, other equipment is adopted to transfer signals on the carriage to cover the terminal in the carriage, so that the problem exists; the method comprises the following specific steps:

for example, as shown in fig. 1, a cell1 is a high-speed cell, operates at a frequency f1, and mainly covers a device on a roof, and the device on the roof is a cell2 and operates at a frequency f 2. The network configures a high-speed indication for the cell1, if the terminal selects the cell1 from the initial cells, the terminal determines that the terminal is in a high-speed state by judging the number of reselected cells within a certain time, the cell1 is the highest-priority reselected cell for the terminal, and the terminal cannot reselect the cell2, so that part of the terminals are poor in high-speed railway performance, the user experience is poor, and meanwhile, the compartment equipment does not play a role in enhancing the compartment coverage.

It can be known from the above that the existing cell reselection scheme has a problem that the high-speed terminal cannot be reselected to other better cells after accessing the high-speed cell.

Disclosure of Invention

The invention aims to provide a cell reselection method, a cell reselection device, a terminal and network side equipment, which aim to solve the problem that in the prior art, a cell reselection scheme has the problem that a high-speed terminal cannot be reselected to other better cells after accessing a high-speed cell.

In order to solve the foregoing technical problem, an embodiment of the present invention provides a cell reselection method, which is applied to a terminal, and includes:

receiving the identity identification information of a cell sent by network side equipment;

performing cell reselection according to the identity identification information;

the identity identification information comprises first class identity identification information and second class identity identification information;

the first type identity information indicates that the corresponding cell is a first type cell, and the cell reselection priority of the first type cell is the highest under the condition that the terminal is in or enters a first state;

the second type of identity information indicates that the corresponding cell is a second type of cell, and the cell reselection priority of the second type of cell is only lower than that of the first type of cell when the terminal is in or enters the first state.

Optionally, the method further includes:

when the terminal is in or enters a first state and the received cell identity information contains the first type identity information and the second type identity information, determining that the cell reselection priority of the cell corresponding to the first type identity information is the highest; alternatively, the first and second electrodes may be,

when the terminal is in or enters a first state and the first type of identification information does not exist in the received cell identification information, determining that the cell reselection priority of the cell corresponding to the second type of identification information is the highest; alternatively, the first and second electrodes may be,

and under the condition that the terminal is in or enters a non-first state and the received cell identity information contains the first type identity information and/or the second type identity information, determining that the cell reselection priority of the cell corresponding to the first type identity information and/or the second type identity information is the lowest.

Optionally, the method further includes:

receiving a state entering condition sent by the network side equipment, wherein the state entering condition comprises preset duration information and time upper limit information;

and determining whether the terminal is in or enters the first state or not according to the preset duration information and the upper limit information of times.

Optionally, the determining, according to the preset duration information and the upper limit information of times, whether the terminal is in or enters the first state includes:

confirming that the terminal is in or enters the first state under the condition that the times of cell reselection are higher than the upper limit of times corresponding to the upper limit of times information within the preset time corresponding to the preset time information;

otherwise, determining that the terminal is in or enters a non-first state.

Optionally, the method further includes:

and determining whether the terminal is in or enters the first state or not according to the sensor information or the Doppler frequency offset information and the speed threshold.

Optionally, the method further includes:

and under the condition that the terminal is determined not to be in the first state or not to enter the first state and the first type of identity identification information is received, determining that the cell reselection priority of the cell corresponding to the first type of identity identification information is the lowest.

Optionally, the performing cell reselection according to the identity information includes:

searching the identity of the cell with the highest reselection priority for the cell determined according to the identity information, and determining whether the cell exists according to the search result;

if the cell exists, reselecting the cell under the condition that the reference signal correlation value of the cell meets the cell residence threshold; alternatively, the first and second electrodes may be,

for the cell with the lowest reselection priority determined according to the identity identification information, if other cells meeting the cell residence threshold are searched, the cell is refused to be reselected;

wherein the reference signal related value comprises at least one of a reference signal received power, RSRP, value and a reference signal received quality, RSRQ, value.

The embodiment of the invention also provides a cell reselection method, which is applied to network side equipment and comprises the following steps:

sending identity identification information of a cell to a terminal, wherein the identity identification information comprises first class identity identification information and second class identity identification information;

the first type identity information indicates that a corresponding cell is a first type cell, and the cell reselection priority of the first type cell is the highest under the condition that the terminal is in or enters a first state;

Optionally, the method further includes:

sending a state entry condition to the terminal;

the state entering condition comprises preset duration information and frequency upper limit information.

Optionally, the method further includes:

and receiving the first type of identification information and/or the second type of identification information distributed by the operation, maintenance and management (OAM).

The embodiment of the invention also provides a cell reselection device, which is applied to a terminal and comprises the following steps:

the first receiving module is used for receiving the identity identification information of the cell sent by the network side equipment;

the first processing module is used for reselecting the cell according to the identity identification information;

Optionally, the apparatus further comprises:

a first determining module, configured to determine that a cell reselection priority of a cell corresponding to first type identity information is highest when the terminal is in or enters a first state and the received cell identity information includes the first type identity information and the second type identity information; alternatively, the first and second electrodes may be,

Optionally, the apparatus further comprises:

the second receiving module is used for receiving state entering conditions sent by the network side equipment, wherein the state entering conditions comprise preset duration information and time upper limit information;

and the second determining module is used for determining whether the terminal is in or enters the first state according to the preset duration information and the frequency upper limit information.

Optionally, the second determining module includes:

a first determining submodule, configured to determine that the terminal is in or enters the first state when, within a preset duration corresponding to the preset duration information, a number of times of cell reselection is higher than a number upper limit corresponding to the number upper limit information;

otherwise, determining that the terminal is in or enters a non-first state.

Optionally, the apparatus further comprises:

and the third determining module is used for determining whether the terminal is in or enters the first state according to the sensor information or the Doppler frequency offset information and the speed threshold.

Optionally, the apparatus further comprises:

a fourth determining module, configured to determine that the cell reselection priority of the cell corresponding to the first type of identity information is the lowest when it is determined that the terminal is not in or does not enter the first state and the first type of identity information is received.

Optionally, the first processing module includes:

the first processing submodule is used for searching the identity of the cell with the highest reselection priority for the cell determined according to the identity information and determining whether the cell exists according to the searching result;

The embodiment of the present invention further provides a cell reselection apparatus, applied to a network side device, including:

the first sending module is used for sending the identity identification information of the cell to the terminal, wherein the identity identification information comprises first class identity identification information and second class identity identification information;

Optionally, the apparatus further comprises:

a second sending module, configured to send a state entry condition to the terminal;

Optionally, the apparatus further comprises:

and the third receiving module is configured to receive the first type of identity information and/or the second type of identity information allocated by the operation, maintenance and management OAM.

An embodiment of the present invention further provides a terminal, including: a processor and a transceiver;

the processor is configured to receive, through the transceiver, identity information of a cell sent by a network side device;

Optionally, the processor is further configured to:

receiving a state entering condition sent by the network side equipment through the transceiver, wherein the state entering condition comprises preset duration information and time upper limit information;

Optionally, the processor is specifically configured to:

otherwise, determining that the terminal is in or enters a non-first state.

Optionally, the processor is further configured to:

Optionally, the processor is specifically configured to:

An embodiment of the present invention further provides a network side device, including: a processor and a transceiver;

the processor is configured to send identity information of a cell to a terminal through the transceiver, where the identity information includes first identity information and second identity information;

Optionally, the processor is further configured to:

transmitting a state entry condition to the terminal through the transceiver;

Optionally, the processor is further configured to:

and receiving the first type of identification information and/or the second type of identification information distributed by the operation, maintenance and management (OAM) through the transceiver.

The embodiment of the invention also provides a terminal, which comprises a memory, a processor and a program which is stored on the memory and can be operated on the processor; and when the processor executes the program, the cell reselection method at the terminal side is realized.

The embodiment of the invention also provides network side equipment, which comprises a memory, a processor and a program which is stored on the memory and can be operated on the processor; and the processor implements the cell reselection method on the network side equipment side when executing the program.

The embodiment of the invention also provides a readable storage medium, which stores a program, and the program realizes the steps in the cell reselection method at the fir terminal side when being executed by a processor; alternatively, the first and second electrodes may be,

the program realizes the steps in the cell reselection method on the network side equipment side when being executed by a processor.

The technical scheme of the invention has the following beneficial effects:

in the above scheme, the cell reselection method receives the cell identity information sent by the network side device; performing cell reselection according to the identity identification information; the identity identification information comprises first class identity identification information and second class identity identification information; the first type identity information indicates that the corresponding cell is a first type cell, and the cell reselection priority of the first type cell is the highest under the condition that the terminal is in or enters a first state; the second type of identity information indicates that the corresponding cell is a second type of cell, and the cell reselection priority of the second type of cell is only lower than that of the first type of cell when the terminal is in or enters the first state; the method can realize that the terminal can be reselected to other better cells after accessing the second type cell, and correspondingly can also solve the problem that the high-speed terminal can not be reselected to other better cells (such as the cells in the carriage covered by other equipment on a high-speed rail) after accessing the high-speed cell under the condition that the second type cell is the high-speed cell; the problem that the cell reselection scheme in the prior art has the problem that the high-speed terminal cannot be reselected to other better cells after accessing the high-speed cell is solved.

Drawings

Fig. 1 is a schematic diagram of cell coverage in the prior art;

fig. 2 is a first flowchart illustrating a cell reselection method according to an embodiment of the present invention;

fig. 3 is a flowchart illustrating a cell reselection method according to a second embodiment of the present invention;

FIG. 4 is a first diagram illustrating cell coverage according to an embodiment of the present invention;

fig. 5 is a schematic diagram illustrating cell coverage according to an embodiment of the present invention;

fig. 6 is a third schematic diagram of cell coverage according to an embodiment of the present invention;

fig. 7 is a first schematic structural diagram of a cell reselection device according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a cell reselection device according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a terminal according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of a network-side device according to an embodiment of the present invention.

Detailed Description

In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.

The present invention provides a cell reselection method, applied to a terminal, as shown in fig. 2, for solving the problem that a cell reselection scheme in the prior art has a problem that a high-speed terminal cannot reselect to another better cell after accessing a high-speed cell, and the method includes:

step 21: receiving the identity identification information of a cell sent by network side equipment;

step 22: performing cell reselection according to the identity identification information; the identity identification information comprises first class identity identification information and second class identity identification information; the first type identity information indicates that the corresponding cell is a first type cell, and the cell reselection priority of the first type cell is the highest under the condition that the terminal is in or enters a first state; the second type of identity information indicates that the corresponding cell is a second type of cell, and the cell reselection priority of the second type of cell is only lower than that of the first type of cell when the terminal is in or enters the first state.

The first category cell may be an accessory cell, which may be specifically understood as a cell covered by an accessory device on a certain device (such as an airplane, a high-speed rail, etc.); the second category cell may be a high speed cell; the first state may specifically refer to a state in which the moving speed of the terminal is higher than or equal to a speed threshold; or, the number of times of cell reselection within the preset time length is higher than an upper limit of times, where the upper limit of times refers to an upper limit of times corresponding to the upper limit of times information sent by the network side device.

The cell reselection method provided by the embodiment of the invention receives the cell identity information sent by the network side equipment; performing cell reselection according to the identity identification information; the identity identification information comprises first class identity identification information and second class identity identification information; the first type identity information indicates that the corresponding cell is a first type cell, and the cell reselection priority of the first type cell is the highest under the condition that the terminal is in or enters a first state; the second type of identity information indicates that the corresponding cell is a second type of cell, and the cell reselection priority of the second type of cell is only lower than that of the first type of cell when the terminal is in or enters the first state; the method can realize that the terminal can be reselected to other better cells after accessing the second type cell, and correspondingly can also solve the problem that the high-speed terminal can not be reselected to other better cells (such as the cells in the carriage covered by other equipment on a high-speed rail) after accessing the high-speed cell under the condition that the second type cell is the high-speed cell; the problem that the cell reselection scheme in the prior art has the problem that the high-speed terminal cannot be reselected to other better cells after accessing the high-speed cell is solved.

Further, the method further comprises: when the terminal is in or enters a first state and the received cell identity information contains the first type identity information and the second type identity information, determining that the cell reselection priority of the cell corresponding to the first type identity information is the highest; or, when the terminal is in or enters the first state and the first type of identification information does not exist in the received cell identification information, determining that the cell reselection priority of the cell corresponding to the second type of identification information is the highest; or, when the terminal is in or enters a non-first state and the received cell identity information contains the first type identity information and/or the second type identity information, determining that the cell reselection priority of the cell corresponding to the first type identity information and/or the second type identity information is the lowest.

The non-first state refers to any state different from the first state.

Still further, the method further comprises: receiving a state entering condition sent by the network side equipment, wherein the state entering condition comprises preset duration information and time upper limit information; and determining whether the terminal is in or enters the first state or not according to the preset duration information and the upper limit information of times.

Determining whether the terminal is in or enters the first state according to the preset duration information and the number upper limit information, wherein the determining comprises: confirming that the terminal is in or enters the first state under the condition that the times of cell reselection are higher than the upper limit of times corresponding to the upper limit of times information within the preset time corresponding to the preset time information; otherwise, determining that the terminal is in or enters a non-first state.

In the embodiment of the present invention, the method further includes: and determining whether the terminal is in or enters the first state or not according to the sensor information or the Doppler frequency offset information and the speed threshold.

Further, the method further comprises: and under the condition that the terminal is determined not to be in the first state or not to enter the first state and the first type of identity identification information is received, determining that the cell reselection priority of the cell corresponding to the first type of identity identification information is the lowest.

In this embodiment of the present invention, the performing cell reselection according to the identity information includes: searching the identity of the cell with the highest reselection priority for the cell determined according to the identity information, and determining whether the cell exists according to the search result; if the cell exists, reselecting the cell under the condition that the reference signal correlation value of the cell meets the cell residence threshold; or, for the cell with the lowest reselection priority determined according to the identity information, if other cells meeting the cell residence threshold are searched, rejecting to reselect to the cell; wherein the reference signal related value comprises at least one of a reference signal received power, RSRP, value and a reference signal received quality, RSRQ, value.

The identity may be a physical cell identity PCI.

An embodiment of the present invention further provides a cell reselection method, which is applied to a network side device, and as shown in fig. 3, the method includes:

step 31: sending identity identification information of a cell to a terminal, wherein the identity identification information comprises first class identity identification information and second class identity identification information; the first type identity information indicates that a corresponding cell is a first type cell, and the cell reselection priority of the first type cell is the highest under the condition that the terminal is in or enters a first state; the second type of identity information indicates that the corresponding cell is a second type of cell, and the cell reselection priority of the second type of cell is only lower than that of the first type of cell when the terminal is in or enters the first state.

The first category cell may be an accessory cell, which may be specifically understood as a cell covered by an accessory device on a certain device (such as an airplane, a high-speed rail, etc.); the second category cell may be a high speed cell.

The cell reselection method provided by the embodiment of the invention sends the identity identification information of the cell to a terminal, wherein the identity identification information comprises first class identity identification information and second class identity identification information; the first type identity information indicates that a corresponding cell is a first type cell, and the cell reselection priority of the first type cell is the highest under the condition that the terminal is in or enters a first state; the second type of identity information indicates that the corresponding cell is a second type of cell, and the cell reselection priority of the second type of cell is only lower than that of the first type of cell when the terminal is in or enters the first state; the method can support the terminal to realize that the terminal can be reselected to other better cells after being accessed into the second type cell, and correspondingly can also solve the problem that the high-speed terminal cannot be reselected to other better cells (such as cells in a carriage covered by other equipment on a high-speed rail) after being accessed into the high-speed cell under the condition that the second type cell is the high-speed cell; the problem that the cell reselection scheme in the prior art has the problem that the high-speed terminal cannot be reselected to other better cells after accessing the high-speed cell is solved.

Further, the method further comprises: sending a state entry condition to the terminal; the state entering condition comprises preset duration information and frequency upper limit information.

Still further, the method further comprises: and receiving the first type of identification information and/or the second type of identification information distributed by the operation, maintenance and management (OAM).

The cell reselection method provided by the embodiment of the present invention is described below with reference to multiple sides, such as a terminal and a network side device.

In view of the foregoing technical problems, an embodiment of the present invention provides a cell reselection method, which can be specifically implemented as a high-speed UE camping method, and relates to the following (a first category cell takes an affiliated cell as an example, a second category cell takes a high-speed cell as an example, and a first state is hereinafter referred to as a high-speed state):

1. a terminal receives identity identification information of a cell (a serving cell and/or a neighbor cell) sent by network side equipment, wherein the identity identification information comprises first information (namely first-class identity identification information) and second information (namely second-class identity identification information);

a) the first information may include one or more of the following, the first information indicating that the cell reselection priority of the cell is the highest, i.e., higher than that of both the high speed cell and the other cells;

i. priority information indicating that the cell is the highest priority cell;

auxiliary cell information (including in-vehicle cell information or mobile cell information) indicating a cell to which a cell corresponding to the information provides coverage for an auxiliary device (such as a roof device on a high-speed rail) on a certain device (such as a high-speed rail, an airplane and the like);

b) the second information is high speed information indicating that the cell is a high speed cell, and the high speed information indicates that the cell reselection priority of the cell is higher than that of the other cells for the terminal in the high speed state.

2. As described in fig. 1, the present solution includes one or more of the following priority confirmation modes:

a) if the terminal is in a high-speed state and receives the first information (namely, a high-speed cell or an auxiliary cell exists in a serving cell or a neighboring cell), the terminal considers that the reselection priority of the auxiliary cell is the highest;

b) if the terminal is in a high-speed state, receives the second information and does not receive the first information (namely the high-speed cell exists in the serving cell or the adjacent cell and the affiliated cell does not exist), the terminal considers that the reselection priority of the high-speed cell is the highest;

c) if the terminal is in a non-high speed state (i.e. the non-first state) and receives the second information (i.e. the high speed cell exists in the serving cell or the neighboring cell), the terminal considers that the reselection priority of the high speed cell is the lowest.

3. As described in fig. 2, the present solution further includes: specifically, when the cell reselection frequency exceeds the frequency upper limit corresponding to the frequency upper limit information within the preset time corresponding to the preset time information, the terminal is in a high-speed state, otherwise, the terminal is in a non-high-speed state.

4. As described in fig. 2, the present solution further includes: the terminal judges whether the terminal is in a high-speed state or not through the sensor or the Doppler frequency offset (according to the sensor information or the Doppler frequency offset information) and the speed threshold;

for example, the center frequency of the cell where the UE currently resides and the neighboring cell, the center frequency of a synchronization signal block SSB (where the UE interacts with the network side device), or the center frequency of a frequency band (where the UE operates) is f1, the doppler frequency offset is estimated as fd, and the speed v may be estimated as fd × c/f, where c is the speed of light; if the v is judged to be lower than 100km/h or other preset speed thresholds according to both the resident cell and the adjacent cell, the terminal is considered to be in a non-high-speed state, and otherwise, the terminal is in a high-speed state.

5. As shown in fig. 4, if it is determined that the terminal is in the "non-high speed state" and receives the first information (i.e., the serving cell or the neighboring cell has the subordinate cell), the terminal determines that the reselection priority of the subordinate cell is the lowest.

6. As described in 2 or 5, in this embodiment;

a) for the cell with the highest reselection priority determined according to the identity information, the terminal first searches the identity (specifically, the physical cell identity PCI) of the cell to determine whether the cell exists, and if the cell exists, reselects to the cell with the highest priority when the reference signal correlation value of the cell meets the cell residence threshold; wherein the reference signal related values include RSRP (reference signal received power) values and RSRQ (reference signal received quality) values.

b) For the cell with the lowest reselection priority determined according to the identity information, if the terminal can search for other cells meeting the camping threshold, the terminal will not reselect to the cell (i.e., refuse to reselect to the cell).

In this scheme, in addition to the terminal side behavior, the network side sends the cell identity information and the state entry condition to the terminal, and also has the following additional behaviors (the terminal takes a high-speed rail as an example):

OAM (operation, maintenance and management) allocates PCI for the high-speed rail cell, ensures that the PCI of the cell in the high-speed rail car does not conflict with the PCI of the private network cell outside the car, and informs the private network base station outside the high-speed rail car (namely the network side equipment): PCI of a district in a high-speed rail carriage.

2. To simplify the network, the OAM may configure the same PCI for all of the cells in the high-speed rail cars.

3. When the device on the carriage (namely the device of the car roof cell) is accessed to the high-speed rail private network cell, the device informs the PCI of the cell in the carriage of the cell, including the PCI of the device and/or the PCI of other cells in the carriage (the PCI of the high-speed rail cell is different from the PCI of the device on the carriage); wherein, the devices on the multiple cars can inform each other of the PCI;

a) for example, when the equipment at the head of the high-speed rail is accessed to the cell of the private network for the high-speed rail, the equipment informs the PCI of the cell of the private network for the high-speed rail and the PCI of the equipment of other carriages of the equipment, namely a PCI list is reported to the cell of the private network for the high-speed rail; and the subsequent data can be sent to the outside-vehicle cell and sent to the terminal by the outside-vehicle cell.

The scheme provided by the embodiment of the present invention is illustrated below (assuming that the cell1 is a high-speed cell and operates at the frequency f1, and mainly covers a device on the roof, which is the cell2 and operates at the frequency f 2).

For example, one:

as shown in fig. 4, the network side device informs the terminal that cell1 is a high-speed cell and cell2 is an affiliated cell;

assuming that the terminal initially resides in the cell1, judging that the terminal is in a high-speed state according to the number of reselected cells within a certain time, and according to the prior art, considering that the cell1 has the highest cell reselection priority, the terminal will continuously reside in the cell 1. By adopting the scheme, after the terminal reads the identity identification information of the cell2, the cell reselection priority of the cell2 is considered to be the highest and higher than that of the cell1, and the terminal 1 reselects the cell 2;

after the terminal reselects to the cell2, because the cell2 is static relative to the terminal in the carriage, the times of cell reselection cannot exceed the time upper limit corresponding to the time upper limit information, the terminal judges that the terminal is a terminal in a common state, at this time, the cell1 is a high-speed cell, and for the terminal in the common state, the reselection priority of the high-speed cell1 is the lowest, so that the terminal cannot reselect to the cell1, thereby achieving the purposes of transferring signals through other devices on the carriage and improving the experience of high-speed users.

Example two:

as shown in fig. 5, the network side device informs the terminal that cell1 is a high-speed cell and cell2 is an affiliated cell;

assuming that the terminal initially resides in the cell1, judging that the terminal is in a non-high-speed state according to the number of reselected cells within a certain time, and considering that the reselection priority of the cell1 is the lowest, at this time, the terminal is a non-high-speed rail user and should not reside in a high-speed rail private network.

Example three:

as shown in fig. 6, the network side device informs the terminal that cell1 is a high-speed cell and cell2 is an attached cell;

assuming that the terminal resides in the cell1, the terminal estimates the doppler frequency offset of the terminal to be about 100Hz, the center frequency f1 of the current work of the cell1 is 2.7GHz, and the terminal estimates the speed of the terminal to be 40km/h through calculation, and belongs to a non-high-speed state;

at this time, the terminal considers that both cell1 and cell2 are the lowest priority, and the terminal can search other (non-high-speed rail) cells for residence, so as to achieve the purpose of not seizing the high-speed rail private network resources.

As can be seen from the above, the scheme provided in the embodiment of the present invention relates to a high speed terminal camping method, and compared with the prior art, the problem that the high speed terminal cannot reselect to another better cell (for example, a cell in a car covered by another device on a high-speed rail) after accessing a high speed cell is solved.

An embodiment of the present invention further provides a cell reselection apparatus, which is applied to a terminal, and as shown in fig. 7, the apparatus includes:

a first receiving module 71, configured to receive identity information of a cell sent by a network side device;

a first processing module 72, configured to perform cell reselection according to the identity information;

The cell reselection device provided by the embodiment of the invention receives the cell identity information sent by the network side equipment; performing cell reselection according to the identity identification information; the identity identification information comprises first class identity identification information and second class identity identification information; the first type identity information indicates that the corresponding cell is a first type cell, and the cell reselection priority of the first type cell is the highest under the condition that the terminal is in or enters a first state; the second type of identity information indicates that the corresponding cell is a second type of cell, and the cell reselection priority of the second type of cell is only lower than that of the first type of cell when the terminal is in or enters the first state; the method can realize that the terminal can be reselected to other better cells after accessing the second type cell, and correspondingly can also solve the problem that the high-speed terminal can not be reselected to other better cells (such as the cells in the carriage covered by other equipment on a high-speed rail) after accessing the high-speed cell under the condition that the second type cell is the high-speed cell; the problem that the cell reselection scheme in the prior art has the problem that the high-speed terminal cannot be reselected to other better cells after accessing the high-speed cell is solved.

Further, the apparatus further comprises: a first determining module, configured to determine that a cell reselection priority of a cell corresponding to first type identity information is highest when the terminal is in or enters a first state and the received cell identity information includes the first type identity information and the second type identity information; or, when the terminal is in or enters the first state and the first type of identification information does not exist in the received cell identification information, determining that the cell reselection priority of the cell corresponding to the second type of identification information is the highest; or, when the terminal is in or enters a non-first state and the received cell identity information contains the first type identity information and/or the second type identity information, determining that the cell reselection priority of the cell corresponding to the first type identity information and/or the second type identity information is the lowest.

Still further, the apparatus further comprises: the second receiving module is used for receiving state entering conditions sent by the network side equipment, wherein the state entering conditions comprise preset duration information and time upper limit information; and the second determining module is used for determining whether the terminal is in or enters the first state according to the preset duration information and the frequency upper limit information.

Wherein the second determining module comprises: a first determining submodule, configured to determine that the terminal is in or enters the first state when, within a preset duration corresponding to the preset duration information, a number of times of cell reselection is higher than a number upper limit corresponding to the number upper limit information; otherwise, determining that the terminal is in or enters a non-first state.

In the embodiment of the present invention, the apparatus further includes: and the third determining module is used for determining whether the terminal is in or enters the first state according to the sensor information or the Doppler frequency offset information and the speed threshold.

Further, the apparatus further comprises: a fourth determining module, configured to determine that the cell reselection priority of the cell corresponding to the first type of identity information is the lowest when it is determined that the terminal is not in or does not enter the first state and the first type of identity information is received.

In an embodiment of the present invention, the first processing module includes: the first processing submodule is used for searching the identity of the cell with the highest reselection priority for the cell determined according to the identity information and determining whether the cell exists according to the searching result; if the cell exists, reselecting the cell under the condition that the reference signal correlation value of the cell meets the cell residence threshold; or, for the cell with the lowest reselection priority determined according to the identity information, if other cells meeting the cell residence threshold are searched, rejecting to reselect to the cell; wherein the reference signal related value comprises at least one of a reference signal received power, RSRP, value and a reference signal received quality, RSRQ, value.

The implementation embodiments of the cell reselection method at the terminal side are all applicable to the embodiment of the cell reselection device, and the same technical effects can be achieved.

An embodiment of the present invention further provides a cell reselection apparatus, which is applied to a network side device, as shown in fig. 8, and includes:

a first sending module 81, configured to send identity information of a cell to a terminal, where the identity information includes first identity information and second identity information;

The cell reselection device provided by the embodiment of the invention sends the identity identification information of the cell to the terminal, wherein the identity identification information comprises first identity identification information and second identity identification information; the first type identity information indicates that a corresponding cell is a first type cell, and the cell reselection priority of the first type cell is the highest under the condition that the terminal is in or enters a first state; the second type of identity information indicates that the corresponding cell is a second type of cell, and the cell reselection priority of the second type of cell is only lower than that of the first type of cell when the terminal is in or enters the first state; the method can support the terminal to realize that the terminal can be reselected to other better cells after being accessed into the second type cell, and correspondingly can also solve the problem that the high-speed terminal cannot be reselected to other better cells (such as cells in a carriage covered by other equipment on a high-speed rail) after being accessed into the high-speed cell under the condition that the second type cell is the high-speed cell; the problem that the cell reselection scheme in the prior art has the problem that the high-speed terminal cannot be reselected to other better cells after accessing the high-speed cell is solved.

Further, the apparatus further comprises: a second sending module, configured to send a state entry condition to the terminal; the state entering condition comprises preset duration information and frequency upper limit information.

Still further, the apparatus further comprises: and the third receiving module is configured to receive the first type of identity information and/or the second type of identity information allocated by the operation, maintenance and management OAM.

The implementation embodiments of the cell reselection method on the network side device side are all applicable to the embodiment of the cell reselection apparatus, and the same technical effects can be achieved correspondingly.

An embodiment of the present invention further provides a terminal, as shown in fig. 9, including: a processor 91 and a transceiver 92;

the processor 91 is configured to receive, through the transceiver 92, identity information of a cell sent by a network side device;

The terminal provided by the embodiment of the invention receives the cell identity information sent by the network side equipment; performing cell reselection according to the identity identification information; the identity identification information comprises first class identity identification information and second class identity identification information; the first type identity information indicates that the corresponding cell is a first type cell, and the cell reselection priority of the first type cell is the highest under the condition that the terminal is in or enters a first state; the second type of identity information indicates that the corresponding cell is a second type of cell, and the cell reselection priority of the second type of cell is only lower than that of the first type of cell when the terminal is in or enters the first state; the method can realize that the terminal can be reselected to other better cells after accessing the second type cell, and correspondingly can also solve the problem that the high-speed terminal can not be reselected to other better cells (such as the cells in the carriage covered by other equipment on a high-speed rail) after accessing the high-speed cell under the condition that the second type cell is the high-speed cell; the problem that the cell reselection scheme in the prior art has the problem that the high-speed terminal cannot be reselected to other better cells after accessing the high-speed cell is solved.

Further, the processor is further configured to: when the terminal is in or enters a first state and the received cell identity information contains the first type identity information and the second type identity information, determining that the cell reselection priority of the cell corresponding to the first type identity information is the highest; or, when the terminal is in or enters the first state and the first type of identification information does not exist in the received cell identification information, determining that the cell reselection priority of the cell corresponding to the second type of identification information is the highest; or, when the terminal is in or enters a non-first state and the received cell identity information contains the first type identity information and/or the second type identity information, determining that the cell reselection priority of the cell corresponding to the first type identity information and/or the second type identity information is the lowest.

Still further, the processor is further configured to: receiving a state entering condition sent by the network side equipment through the transceiver, wherein the state entering condition comprises preset duration information and time upper limit information; and determining whether the terminal is in or enters the first state or not according to the preset duration information and the upper limit information of times.

Wherein the processor is specifically configured to: confirming that the terminal is in or enters the first state under the condition that the times of cell reselection are higher than the upper limit of times corresponding to the upper limit of times information within the preset time corresponding to the preset time information; otherwise, determining that the terminal is in or enters a non-first state.

In an embodiment of the present invention, the processor is further configured to: and determining whether the terminal is in or enters the first state or not according to the sensor information or the Doppler frequency offset information and the speed threshold.

Further, the processor is further configured to: and under the condition that the terminal is determined not to be in the first state or not to enter the first state and the first type of identity identification information is received, determining that the cell reselection priority of the cell corresponding to the first type of identity identification information is the lowest.

In an embodiment of the present invention, the processor is specifically configured to: searching the identity of the cell with the highest reselection priority for the cell determined according to the identity information, and determining whether the cell exists according to the search result; if the cell exists, reselecting the cell under the condition that the reference signal correlation value of the cell meets the cell residence threshold; or, for the cell with the lowest reselection priority determined according to the identity information, if other cells meeting the cell residence threshold are searched, rejecting to reselect to the cell; wherein the reference signal related value comprises at least one of a reference signal received power, RSRP, value and a reference signal received quality, RSRQ, value.

The implementation embodiments of the cell reselection method at the terminal side are all applicable to the embodiment of the terminal, and the same technical effects can be achieved.

An embodiment of the present invention further provides a network side device, as shown in fig. 10, including: a processor 101 and a transceiver 102;

the processor 101 is configured to send identity information of a cell to a terminal through the transceiver 102, where the identity information includes first identity information and second identity information;

The network side equipment provided by the embodiment of the invention sends the identity identification information of the cell to the terminal, wherein the identity identification information comprises first class identity identification information and second class identity identification information; the first type identity information indicates that a corresponding cell is a first type cell, and the cell reselection priority of the first type cell is the highest under the condition that the terminal is in or enters a first state; the second type of identity information indicates that the corresponding cell is a second type of cell, and the cell reselection priority of the second type of cell is only lower than that of the first type of cell when the terminal is in or enters the first state; the method can support the terminal to realize that the terminal can be reselected to other better cells after being accessed into the second type cell, and correspondingly can also solve the problem that the high-speed terminal cannot be reselected to other better cells (such as cells in a carriage covered by other equipment on a high-speed rail) after being accessed into the high-speed cell under the condition that the second type cell is the high-speed cell; the problem that the cell reselection scheme in the prior art has the problem that the high-speed terminal cannot be reselected to other better cells after accessing the high-speed cell is solved.

Further, the processor is further configured to: transmitting a state entry condition to the terminal through the transceiver; the state entering condition comprises preset duration information and frequency upper limit information.

Still further, the processor is further configured to: and receiving the first type of identification information and/or the second type of identification information distributed by the operation, maintenance and management (OAM) through the transceiver.

The implementation embodiments of the cell reselection method on the network side device side are all applicable to the embodiment of the network side device, and the same technical effects can be achieved correspondingly.

An embodiment of the present invention further provides a readable storage medium, on which a program is stored, where the program, when executed by a processor, implements the steps in the cell reselection method at the terminal side; alternatively, the program is executed by a processor to implement the steps in the cell reselection method on the network side device side.

The implementation embodiments of the cell reselection method on the terminal side or the network side device side are all applicable to the embodiment of the readable storage medium, and the same technical effects can be achieved.

It should be noted that many of the functional components described in this specification are referred to as modules/sub-modules in order to more particularly emphasize their implementation independence.

In embodiments of the invention, the modules/sub-modules may be implemented in software for execution by various types of processors. An identified module of executable code may, for instance, comprise one or more physical or logical blocks of computer instructions which may, for instance, be constructed as an object, procedure, or function. Nevertheless, the executables of an identified module need not be physically located together, but may comprise disparate instructions stored in different bits which, when joined logically together, comprise the module and achieve the stated purpose for the module.

Indeed, a module of executable code may be a single instruction, or many instructions, and may even be distributed over several different code segments, among different programs, and across several memory devices. Likewise, operational data may be identified within the modules and may be embodied in any suitable form and organized within any suitable type of data structure. The operational data may be collected as a single data set, or may be distributed over different locations including over different storage devices, and may exist, at least partially, merely as electronic signals on a system or network.

When a module can be implemented by software, considering the level of existing hardware technology, a module implemented by software may build a corresponding hardware circuit to implement a corresponding function, without considering cost, and the hardware circuit may include a conventional Very Large Scale Integration (VLSI) circuit or a gate array and an existing semiconductor such as a logic chip, a transistor, or other discrete components. A module may also be implemented in programmable hardware devices such as field programmable gate arrays, programmable array logic, programmable logic devices or the like.

While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.

Claims

1. A cell reselection method is applied to a terminal, and is characterized by comprising the following steps:

2. The cell reselection method of claim 1, wherein the method further comprises:

3. The cell reselection method of claim 1 or 2, wherein the method further comprises:

4. The cell reselection method according to claim 3, wherein the determining whether the terminal is in or enters the first state according to the preset duration information and upper limit information of times includes:

otherwise, determining that the terminal is in or enters a non-first state.

5. The cell reselection method of claim 1 or 2, wherein the method further comprises:

6. The cell reselection method of claim 5, wherein the method further comprises:

7. The cell reselection method according to claim 1, wherein the performing cell reselection according to the id information comprises:

8. A cell reselection method is applied to network side equipment, and is characterized by comprising the following steps:

9. The cell reselection method of claim 8, wherein the method further comprises:

sending a state entry condition to the terminal;

10. The cell reselection method of claim 8, wherein the method further comprises:

11. A cell reselection apparatus applied to a terminal, comprising:

12. The cell reselection apparatus of claim 11, wherein said apparatus further comprises:

13. The cell reselection apparatus of claim 11 or 12, wherein said apparatus further comprises:

14. The cell reselection apparatus of claim 13, wherein the second determining module comprises:

otherwise, determining that the terminal is in or enters a non-first state.

15. The cell reselection apparatus of claim 11 or 12, wherein said apparatus further comprises:

16. The cell reselection apparatus of claim 15, wherein said apparatus further comprises:

17. The cell reselection apparatus of claim 11, wherein the first processing module comprises:

18. A cell reselection device applied to a network side device is characterized by comprising:

19. The cell reselection apparatus of claim 18, wherein said apparatus further comprises:

20. The cell reselection apparatus of claim 18, wherein said apparatus further comprises:

21. A terminal, comprising: a processor and a transceiver;

22. A network-side device, comprising: a processor and a transceiver;

23. A terminal comprising a memory, a processor, and a program stored on the memory and executable on the processor; wherein the processor, when executing the program, implements the cell reselection method of any of claims 1-7.

24. A network side device comprises a memory, a processor and a program which is stored on the memory and can run on the processor; a method for cell reselection as claimed in any of claims 8 to 10 when said program is executed by said processor.

25. A readable storage medium, having a program stored thereon, where the program is adapted to, when executed by a processor, perform the steps in the cell reselection method of any of claims 1 to 7; alternatively, the first and second electrodes may be,

the program when executed by a processor implements the steps in a cell reselection method as claimed in any of claims 8 to 10.