CN117255374A - Cell reselection priority indication method, device and terminal - Google Patents

Abstract

The invention provides a cell reselection priority indication method, device and terminal, and relates to the technical field of communication. The method comprises the following steps: receiving a radio resource control connection release message sent by network side equipment, wherein the radio resource control connection release message carries IMMC parameter information of an instant messaging management center; determining special priority information of the service frequency point and effective time of the special priority according to the IMMC parameter information; and under the condition that the effective time is not overtime, cell reselection is carried out according to the special priority information. According to the scheme of the invention, the priority of the service frequency point is changed from highest to lower, so that the problem of ping-pong reselection caused by frequent access to the service frequency point when the public priority of broadcasting takes effect is avoided.

Description

Cell reselection priority indication method, device and terminal

Technical Field

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

Background

Currently, the network side device may send a priority for cell reselection to the terminal through an RRC connection release (RRCRelease) message or a system message, where the priority is allocated per frequency point. And the priority corresponding to each frequency point is fixed, for example, 38750 frequency points, when the priority is distributed to the frequency points, the priority is generally assigned as a default, the priority is 7, and after the terminal and the network side equipment complete interaction, the priority of the frequency point is still the highest, so that the problem of ping-pong reselection easily occurs in a period of time.

Disclosure of Invention

The invention aims to provide a cell reselection priority indication method, device and terminal, so as to avoid the ping-pong reselection problem in the prior art.

To achieve the above object, an embodiment of the present invention provides a method for indicating a cell reselection priority, which is applied to a terminal, and includes:

receiving a radio resource control connection release message sent by network side equipment, wherein the radio resource control connection release message carries IMMC parameter information of an instant messaging management center;

determining special priority information of the service frequency point and effective time of the special priority according to the IMMC parameter information;

and under the condition that the effective time is not overtime, cell reselection is carried out according to the special priority information.

Optionally, the method further comprises:

and deleting the special priority information when the first condition is met, and carrying out cell reselection according to the pre-configured public priority information.

Optionally, the first condition includes at least one of:

the validity time is overtime;

the terminal is switched from an idle state to a connection state;

the non-access stratum NAS of the terminal performs public land mobile network PLMN selection.

Optionally, the IMMC parameter information includes:

an evolved universal terrestrial radio access EUTRA frequency point priority list;

a GERAN frequency priority list of an enhanced data rate GSM evolution technology wireless access network;

universal terrestrial radio access UTRA frequency division duplex FDD frequency point priority list;

UTRA time division duplex TDD frequency point priority list;

a band class priority list of high-speed packet data;

counter information for the special priority.

Optionally, the method further comprises:

determining a frequency point message which does not carry the IMMC parameter information according to the radio resource control connection release message;

and determining to reselect the cell according to the pre-configured public priority information according to the frequency point message which does not carry the IMMC parameter information.

To achieve the above objective, an embodiment of the present invention further provides a method for indicating a cell reselection priority, which is applied to a network device, and includes:

and under the condition that the terminal is switched from the connection state to the idle state, sending a radio resource control connection release message to the terminal, wherein the radio resource control connection release message carries IMMC parameter information of an instant messaging management center.

To achieve the above object, an embodiment of the present invention further provides a cell reselection priority indicating device, applied to a terminal, including:

the receiving module is used for receiving a radio resource control connection release message sent by the network side equipment, wherein the radio resource control connection release message carries IMMC parameter information of the instant messaging management center;

the determining module is used for determining special priority information of the service frequency point and effective time of the special priority according to the IMMC parameter information;

and under the condition that the effective time is not overtime, cell reselection is carried out according to the special priority information.

To achieve the above object, an embodiment of the present invention further provides a cell reselection priority indicating device, applied to a network side device, including:

and the sending module is used for sending a radio resource control connection release message to the terminal under the condition that the terminal is switched from a connection state to an idle state, wherein the radio resource control connection release message carries IMMC parameter information of the instant messaging management center.

To achieve the above object, an embodiment of the present invention further provides a terminal, including a processor, configured to:

receiving a radio resource control connection release message sent by network side equipment, wherein the radio resource control connection release message carries IMMC parameter information of an instant messaging management center;

determining special priority information of the service frequency point and effective time of the special priority according to the IMMC parameter information;

and under the condition that the effective time is not overtime, cell reselection is carried out according to the special priority information.

To achieve the above object, an embodiment of the present invention further provides a readable storage medium having stored thereon a program or instructions which, when executed by a processor, implement the steps in the cell reselection priority indication method as set forth in any of the above.

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

in the above technical solution, the receiving network side device sends a radio resource control connection release message, where the radio resource control connection release message carries IMMC parameter information of the instant messaging management center; determining special priority information of the service frequency point and effective time of the special priority according to the IMMC parameter information; and under the condition that the effective time is not overtime, cell reselection is carried out according to the special priority information. The invention changes the priority of the IMMC parameter information service frequency point from highest to lower, and avoids the problem of ping-pong reselection caused by frequent access to the service frequency point when the public priority of broadcasting takes effect.

Drawings

Fig. 1 is a flowchart of a cell reselection priority indication method according to an embodiment of the present invention;

fig. 2 is a second flowchart of a cell reselection priority indication method according to an embodiment of the present invention;

fig. 3 is a diagram illustrating a structure of a cell reselection priority indicator according to an embodiment of the present invention;

fig. 4 is a second block diagram of a cell reselection priority indicator according to an embodiment of the present invention;

fig. 5 is one of the block diagrams of the mobile terminal according to the embodiment of the present invention.

Fig. 6 is a second block diagram of a mobile terminal according to an embodiment of the present invention.

Detailed Description

In order to make the technical problems, technical solutions and advantages to be solved more apparent, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.

It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

In the examples provided herein, it should be understood that "B corresponding to a" means that B is associated with a from which B may be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may also determine B from a and/or other information.

In this embodiment of the present application, the terminal may also be referred to as a terminal Device or a User Equipment (UE), and the terminal may be a terminal-side Device such as a mobile phone, a tablet (Tablet Personal Computer), a Laptop (Laptop Computer) or a notebook (Personal Digital Assistant, PDA), a palm Computer, a netbook, an ultra-mobile personal Computer (ultra-mobile personal Computer, UMPC), a mobile internet Device (Mobile Internet Device, MID), a Wearable Device (or a vehicle-mounted Device (VUE), a pedestrian terminal (PUE), and the Wearable Device includes: a bracelet, earphone, glasses, etc. It should be noted that, the embodiment of the present application is not limited to a specific type of terminal. The network side may be a base station, where the base station may be referred to as a node B, an evolved node B, an access point, a base transceiver station (Base Transceiver Station, BTS), a radio base station, a radio transceiver, a basic service set (Basic Service Set, BSS), an extended service set (Extended Service Set, ESS), a node B, an evolved node B (eNB), a home node B, a home evolved node B, a WLAN access point, a WiFi node, a transmission receiving point (Transmitting Receiving Point, TRP), or some other suitable terminology in the field, and the base station is not limited to a specific technical vocabulary so long as the same technical effect is achieved, and it should be noted that in the embodiments of the present application, only the base station in the NR system is taken as an example, but the specific type of the base station is not limited.

For a better understanding of the solution provided in the present application, the following will be described first:

1. RRC (Radio Resource Control ) content profile of the connection release message.

The RRC connection release message optionally includes redirection information and cell reselection priority information. The redirection information is used to assign a specific frequency point to the UE (User Equipment), and after the UE releases the RRC connection, cell selection can only be performed on this frequency point. And the cell reselection priority information is used to indicate to the UE the priority of the frequency points for which cell reselection is possible next.

1. When the RRC connection release message does not contain redirection information and only contains cell reselection priority information, the UE firstly selects a cell to a current cell and resided in the cell after the RRC connection is released, and then performs cell reselection according to the cell reselection priority information in the RRC connection release message;

2. when the RRC connection release message only contains redirection information and does not contain cell reselection priority information, the UE can first select the cell according to the redirection frequency point designated in the redirection information after the RRC connection is released, and then perform normal cell reselection in the resident cell;

3. when the RRC connection release message contains both redirection information and cell reselection priority information, the UE will first select to conduct cell reselection according to the redirection frequency point specified in the redirection information after the RRC connection is released, and then conduct cell reselection according to the cell reselection priority information in the RRC connection release message;

4. when the RRC connection release message contains neither redirection information nor cell reselection priority information, the UE may first select a cell to a current cell and camp on after releasing the RRC connection, and then perform normal cell reselection.

2. Priority indicating means profile.

For E-UTRAN, each frequency point has a cell reselection priority; for different technologies, each frequency point (segment) has one cell reselection priority, and equal priorities are not supported between different technologies. And the current protocol specifies that the UE can only evaluate cell reselection if the E-UTRAN (Evolved UMTS Terrestrial Radio Access Network, evolved UMTS terrestrial radio access network; UMTS: universal Mobile Telecommunication System universal mobile telecommunications system) frequency point or different technology frequency point (segment) is provided by the system information and has cell reselection priority for this frequency point.

It should be noted that, the frequency point priority information of cell reselection comes from the following two means:

a) Common signaling (i.e., system information): the priority information of the service frequency point of the cell where the UE is located when the radio resource control connection release message is received, the respective priority information of the E-UTRAN non-service frequency point, and the respective priority information of the frequency points (segments) of other RATs (Radio Access Technology, radio access technologies) are provided. This is referred to as common priority information.

b) In dedicated signaling: the RRC connection release message optionally carries a priority list of E-UTRAN inter-frequency/inter-technology frequency points (segments) and a corresponding validity period timer length. This is called dedicated priority information. Compared with the information provided in the system information, the corresponding information unit content lacks the priority of the frequency point of the cell where the UE is located when receiving the radio resource control connection release message, and a priority effective time timer T320 is added.

After the cell selection is camped on the appropriate cell for 1s, the cell reselection is started. The most important concept of cell reselection is frequency priority, and compared with frequency points, one frequency point corresponds to one priority, the value is 0-7, and the priorities of different frequency points can be issued in a cell system message. Obtaining of frequency priority: system messages, RRC Connection Release (radio resource control connection release) messages (optional IMMC (instant messaging management center) parameters).

(1) Reselection to high priority cell:

for a high priority cell, the UE will always measure, if the high priority cell satisfies: the signal quality snongservingcell of the cell is more than or equal to a first threshold value Threshx, high, (the S value of the adjacent cell is also sent in a system message by taking a frequency point as a unit), and the minimum receiving level value is continuously selected for a preset time period Treselection, and the UE reselects to the high-priority cell.

(2) Cell reselection to the same priority:

the R criterion is followed for both the same frequency and different frequency. The R criterion means that Rs for the serving cell and Rn for the target cell satisfy: where Qmeas is the RSRP value of the measurement cell and Offset defines the Offset value of the target cell, for inter-frequency cells with equal priority, comprising two parts, a cell-based Offset value and a frequency-based Offset value. If the target cell is in Treselection time (Treselection of the same frequency and different frequencies may be different), rn continues to exceed Rs, then the UE reselects to the target cell. Expressed by the following formula:

Rn>Rs，Rn＝Qmeas,n-Offset，Rs＝Qmeas,s+Qhyst。

when Sservingcell is less than or equal to SintraSearch, the same-frequency measurement is started, and if the neighbor cell meets Rn > Rs and the duration time is Treselection, the UE reselects to the same-priority same-frequency cell.

And when Sservingcell is less than or equal to SnonenteraSearch, starting inter-frequency system measurement, and if the neighbor cell meets Rn > Rs and the duration is Treselection, reselecting the UE to the same-priority inter-frequency cell.

(3) Reselection to low priority cell:

when Sservingcell is less than or equal to SnonenteraSearch (inter-frequency/inter-system measurement starting threshold), inter-frequency inter-system measurement is started, if the low priority cell meets the condition that the Snoneservingcell is more than or equal to Threshx, low (inter-frequency point low priority reselection threshold), and the serving cell meets the condition that the Sservingcell is less than or equal to Threshserving, low (service frequency point low priority reselection threshold), and the duration Treselection is continued, the UE reselects to the low priority cell.

The cell reselection priority indication method provided by the embodiment of the application is described in detail below through specific embodiments and application scenarios thereof with reference to the accompanying drawings.

As shown in fig. 1, a cell reselection priority indication method in an embodiment of the present invention is applied to a terminal, and includes:

step 100, receiving a radio resource control connection release message sent by a network side device, wherein the radio resource control connection release message carries IMMC parameter information of an instant messaging management center;

step 200, determining special priority information of the service frequency point and effective time of the special priority according to the IMMC parameter information;

and 300, carrying out cell reselection according to the special priority information under the condition that the effective time is not overtime.

It should be noted that, the dedicated priority information is a dedicated priority list, and the invalidation of the dedicated priority list may be achieved by setting a timer, that is, setting the valid time of the dedicated priority by the timer, and starting the timer when the terminal acquires the dedicated priority list.

In this embodiment, when the terminal receives that the cell carries an IMMCI cell in a radio resource control connection release message (RRCConnectionRelease) message, the special priority of the preset frequency band indicating the serving frequency point is 7, and a timer t320=30 minutes, then the terminal occupies the preset frequency band cell of the serving frequency point according to the indication, at this time, because T320 is not overtime and the terminal does not change its RRC state, the problem of ping-pong reselection can occur because the special priority provided by the non-serving frequency point through the RRCConnectionRelease message is always effective, according to the IMMC parameter information, the invention determines that the special priority information of the serving frequency point is changed from the original high priority 7 to the low priority 5 or 4, and sets T320 to a suitable duration (T320 is a special priority effective time, the specific value setting can be determined according to the requirement), and after reselecting the macro station, the terminal executes a rule of newly reselecting the local cell frequency point according to the IMMC indication carried by the release.

The invention avoids ping-pong reselection caused by effective public priority of broadcasting, and can lead the cell reselection priority indication to be more accurate according to the suitable priority of IMMC indication carried by release.

For example, the terminal resides in a cell of an LTE (Long Term Evolution ) system, which issues a dedicated priority list through dedicated signaling, a public priority list through system broadcast information, and a UMTS (universal mobile telecommunications system) or GERAN (GSM/EDGE radio telecommunications network) system. The public priority list issued by the broadcast information of the UMTS or GERAN system indicates that the priority level is LTE > UMTS > GERAN; the public priority list is issued from the broadcast information of the LTE system, and can be issued through special signaling such as RRC special signaling or Non-access Stratum NAS (Non-Strateum) information when the RRC connection is established, and the issued public priority list indicates that LTE is more than UMTS is more than GERAN; it will be appreciated that the priority levels indicated by the above priority list may be the same or different. The dedicated priority list issued from LTE dedicated signaling indicates GERAN > UMTS > LTE.

According to the IMMC parameter information, determining special priority information of the service frequency point, namely, the priority shown by a special priority list is GERAN > UMTS > LTE, before a timer is overtime, the terminal reselects from a cell of the LTE system to a cell of the GERAN system, and a person skilled in the art can understand that the terminal firstly reselects from the cell of the LTE system to the cell of the GERAN system according to the special priority list, and if the signal quality of the cell does not meet the requirement of the signal quality criterion, the terminal residing in the cell of the GERAN system reselects from the cell of the UMTS system according to the special priority list.

Before the timer times out, since the special priority list is GERAN > UMTS > LTE, the terminal will attempt to reselect to the cell of the LTE system only if the signal quality of the cell in which it is currently located drops to a certain extent (e.g., below a preset threshold value). The valid time of the special priority list may be issued to the terminal by the evolved node b (eNodeB) through RRC dedicated signaling, that is, the above-mentioned e.g. RRC connection release message, or issued to the terminal by the core network node through a non-access stratum (NAS) message, where before the timer expires, the terminal is in the cell with the highest priority shown in the special priority list, where the terminal selects whether to perform cell reselection according to the signal quality of the cell, and when the signal quality of the cell drops to a set threshold, the terminal performs cell reselection.

Optionally, the method further comprises:

and deleting the special priority information when the first condition is met, and carrying out cell reselection according to the pre-configured public priority information.

In this embodiment, the first condition is that the validity time of the dedicated priority is invalid, i.e. that the timer T320 is invalid, or that the validity time is configured for the dedicated priority (in this case, the remaining validity time is applied) when the validity time is interrupted by other factors, such as (re) selecting E-UTRA from another RAT, or that the signal quality of the dedicated priority is reduced when the cell (re) selects another RAT (in this case, the timer is brought to another RAT), or the like, i.e. that the first condition is satisfied, that the cell reselection priority information provided by the dedicated signaling is discarded, and that the cell reselection is performed according to the pre-configured common priority information, preventing the occurrence of ping-pong reselection or poor signal quality when the broadcasted common priority is in effect.

Specifically, the first condition includes at least one of:

the validity time is overtime;

the terminal is switched from an idle state to a connection state;

the non-access stratum NAS of the terminal performs public land mobile network PLMN selection.

In this embodiment, the validity time expires, i.e. the timer T320 of the dedicated priority expires; the terminal is switched from an idle state to a connection state, namely the UE enters different RRC states; the NAS of the terminal performs PLMN selection, namely NAS requests to perform PLMN selection, so that the quality of terminal signals is ensured.

It should be noted that, in the prior art, the terminal only needs to ignore all priority information (public priority) provided in the system message after receiving the special signaling mode (RRC RELEASE message carrying) to provide the special priority, but it is not clear how to determine the priority information of other frequency points provided in the system message before the special priority information fails.

The invention also provides that:

determining a frequency point message which does not carry the IMMC parameter information according to the radio resource control connection release message;

and determining to reselect the cell according to the pre-configured public priority information according to the frequency point message which does not carry the IMMC parameter information.

In this embodiment, the terminal uses RRC RELEASE message to carry the priority information of the frequency point, and for the frequency point not carried by RRC RELEASE message, continues to use the priority information of the frequency point provided by the system message; the terminal defaults the frequency point without priority information to the lowest priority (lower than any of the network configured values).

The above scheme can be understood that the terminal uses RRC RELEASE message to carry the priority information of the frequency point, but for the frequency point not carried by RRC RELEASE message, the frequency point priority information provided by the system message is continuously used; when priority information processing of the frequency re-selection point is not optimized at the terminal, the special priority effective time can be reduced by shortening the T320 timer, and meanwhile, the service frequency point priority residence strategy is considered, and the time length of the suggested T320 timer is set to be not more than 5min; before the terminal does not optimize the priority information processing of the reselection frequency point, the serious weak coverage problem generated when the idle NSA terminal leaves the coverage area of the service frequency point is reduced.

Specifically, the IMMC parameter information includes:

an evolved universal terrestrial radio access EUTRA frequency point priority list;

a GERAN frequency priority list of an enhanced data rate GSM evolution technology wireless access network;

universal terrestrial radio access UTRA frequency division duplex FDD frequency point priority list;

UTRA time division duplex TDD frequency point priority list;

a band class priority list of high-speed packet data;

counter information for the special priority.

In this embodiment, the IMMC parameter information is parameter information under idle state mobile control information, and the EUTRA frequency point priority list is "freqpriorityisteutra"; the GSM evolution technology wireless access network GERAN frequency point priority list is 'freqPrioritiyListGERAN'; UTRA frequency division duplexing FDD frequency point priority list, namely "freqpriority list UTRA-FDD"; UTRA time division duplex, TDD, frequency point priority list, namely "freq priority list UTRA-TDD"; a band class priority list of high-rate packet data, i.e. "bandclassprioritlistprpd"; the counter information of the special priority is the information of the timer T320. The invention can specifically set the grade of the special priority information by setting the IMMC parameter information, and the special priority which is not set as the highest priority can be ensured to be used when the terminal has a demand, thereby avoiding the problem of ping-pong reselection when the public priority of broadcasting takes effect.

That is, the original high priority 7 is changed to the low priority 5 or 4, and the T320 is set to a proper time (T320 is the effective time of the special priority, and the specific value can be set according to the requirement), and after the terminal reselects back to the macro station, the terminal executes a new rule of reselecting the frequency point of the cell according to the IMMC instruction carried by release.

In summary, for the frequency points not carried by the IMMC, the frequency point priority provided by the system message sib5 is continuously used; the invention only needs to change the priority of the service frequency point from highest to lower, which meets the actual demand, if the invention can adjust the special priority of the frequency point 38750 from priority 7 to priority 4 or 5, the invention can meet the actual demand, and at the same time, the invention also avoids the problem of ping-pong reselection when the public priority of broadcasting takes effect.

As shown in fig. 2, the present invention further provides a cell reselection priority indication method, which is applied to a network side device, and includes:

step 400, when the terminal satisfies the condition of switching from the connection state to the idle state, a radio resource control connection release message is sent to the terminal, wherein the radio resource control connection release message carries IMMC parameter information of an instant messaging management center.

The cell reselection is to perform measurement of signal quality level on the neighbor cell by the UE, evaluate cells with different priorities, and reselect one cell by the UE according to different reselection rules. When the UE performs measurement and cell reselection, priority information of adjacent frequency is needed. When the adjacent frequency is not configured with priority, the UE will not measure and reselect the frequency point. When the same-frequency cell reselection is performed, the UE ignores the frequency point priority information, namely that the same-frequency cells are all of the same priority, and different priorities do not exist.

Specifically, the network side device detects whether the terminal meets the condition of switching from a connection state to an idle state; if the user equipment meets the condition of switching from the connection state to the idle state, a first message is sent to the terminal; the first message is used for indicating the user equipment to switch from a connection state to an idle state; the first message comprises a radio resource control connection release message, and the radio resource control connection release message carries IMMC parameter information of an instant messaging management center.

In this embodiment, when the UE satisfies the handover from the connected state to the idle state, the UE selects the last cell camping in the connected state, and sends a radio resource control connection release message (RRC Connection Release information) to the terminal, where the radio resource control connection release message carries IMMC parameter information of the instant messaging management center, and assigns a special priority to the UE through the IMMC parameter information.

When the network side equipment (base station) releases RRC connection to the user terminal, and indicates the special priority through the IMMC parameter information, so that the terminal always selects a cell with higher priority according to the cell reselection condition of the LTE system, when the user terminal performs cell selection again, only the special priority determined by the IMMC parameter information is selected, and the special priority can be set according to specific requirements, namely, the special priority can be set to be a lower priority level under the condition that the service frequency point in the prior art is the highest priority, and the problem of ping-pong reselection when the broadcast public priority takes effect is avoided.

As shown in fig. 3, the embodiment of the present invention further provides a cell reselection priority indicating device, which is applied to a terminal, and includes:

a receiving module 10, configured to receive a radio resource control connection release message sent by a network side device, where the radio resource control connection release message carries IMMC parameter information of an instant messaging management center;

a determining module 20, configured to determine, according to the IMMC parameter information, special priority information of a service frequency point and an effective time of the special priority;

and the processing module 30 is configured to perform cell reselection according to the dedicated priority information if the valid time is not timeout.

Optionally, the apparatus further includes:

and the second processing module is used for deleting the special priority information when the first condition is met, and carrying out cell reselection according to the pre-configured public priority information.

The first condition includes at least one of:

the validity time is overtime;

the terminal is switched from an idle state to a connection state;

the non-access stratum NAS of the terminal performs public land mobile network PLMN selection.

The IMMC parameter information includes:

an evolved universal terrestrial radio access EUTRA frequency point priority list;

a GERAN frequency priority list of an enhanced data rate GSM evolution technology wireless access network;

universal terrestrial radio access UTRA frequency division duplex FDD frequency point priority list;

UTRA time division duplex TDD frequency point priority list;

a band class priority list of high-speed packet data;

counter information for the special priority.

Optionally, the apparatus further includes:

a second determining module, configured to determine, according to the radio resource control connection release message, a frequency point message that does not carry the IMMC parameter information;

and a third determining module, configured to determine, according to a frequency point message that does not carry the IMMC parameter information, to perform cell reselection with pre-configured common priority information.

As shown in fig. 4, an embodiment of the present invention further provides a cell reselection priority indicating apparatus, which is applied to a network side device, and includes:

and the sending module is used for sending a radio resource control connection release message to the terminal under the condition that the terminal is switched from a connection state to an idle state, wherein the radio resource control connection release message carries IMMC parameter information of the instant messaging management center.

As shown in fig. 5, a terminal 500 of an embodiment of the present invention includes a processor 510 and a transceiver 520, wherein,

the transceiver 520 is configured to receive a radio resource control connection release message sent by a network side device, where the radio resource control connection release message carries IMMC parameter information of an instant messaging management center;

the processor 510 is configured to determine, according to the IMMC parameter information, special priority information of a service frequency point and an effective time of the special priority;

the processor 510 is further configured to perform cell reselection according to the dedicated priority information if the validity time is not timed out.

Optionally, the processor 510 is further configured to delete the dedicated priority information and perform cell reselection according to pre-configured common priority information when the first condition is satisfied.

The first condition includes at least one of:

the validity time is overtime;

the terminal is switched from an idle state to a connection state;

the non-access stratum NAS of the terminal performs public land mobile network PLMN selection.

The IMMC parameter information includes:

an evolved universal terrestrial radio access EUTRA frequency point priority list;

a GERAN frequency priority list of an enhanced data rate GSM evolution technology wireless access network;

universal terrestrial radio access UTRA frequency division duplex FDD frequency point priority list;

UTRA time division duplex TDD frequency point priority list;

a band class priority list of high-speed packet data;

counter information for the special priority.

The processor 510 is further configured to determine, according to the radio resource control connection release message, a frequency point message that does not carry the IMMC parameter information;

and determining to reselect the cell according to the pre-configured public priority information according to the frequency point message which does not carry the IMMC parameter information.

A terminal according to another embodiment of the present invention, as shown in fig. 6, includes a transceiver 610, a processor 600, a memory 620, and a program or instructions stored on the memory 620 and executable on the processor 600; the processor 600, when executing the program or instructions, implements the above-described method for indicating cell reselection priorities.

The transceiver 610 is configured to receive and transmit data under the control of the processor 600.

Wherein in fig. 6, a bus architecture may comprise any number of interconnected buses and bridges, and in particular one or more processors represented by processor 600 and various circuits of memory represented by memory 620, linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides a user interface 630. The transceiver 610 may be a number of elements, i.e. comprising a transmitter and a receiver, providing a unit for communicating with various other apparatus over a transmission medium. The processor 600 is responsible for managing the bus architecture and general processing, and the memory 620 may store data used by the processor 600 in performing operations.

The readable storage medium of the embodiment of the present invention stores a program or an instruction, where the program or the instruction, when executed by a processor, implements the steps in the cell reselection priority indication method described above, and can achieve the same technical effects, and in order to avoid repetition, will not be described herein.

The processor is a processor in the cell reselection priority indication method described in the foregoing embodiment. The readable storage medium includes a computer readable storage medium such as a Read-Only Memory (ROM), a random access Memory (Random Access Memory RAM), a magnetic disk or an optical disk.

It is further noted that the terminals described in this specification include, but are not limited to, smartphones, tablets, etc., and that many of the functional components described are referred to as modules in order to more particularly emphasize their implementation independence.

In an embodiment of the invention, the 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 organized 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 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.

Where a module may be implemented in software, taking into account the level of existing hardware technology, a module may be implemented in software, and one skilled in the art may, without regard to cost, build corresponding hardware circuitry, including conventional Very Large Scale Integration (VLSI) circuits or gate arrays, and existing semiconductors such as logic chips, transistors, or other discrete components, to achieve the corresponding functions. 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.

The exemplary embodiments described above are described with reference to the drawings, many different forms and embodiments are possible without departing from the spirit and teachings of the present invention, and therefore, the present invention should not be construed as limited to the exemplary embodiments set forth herein. Rather, these exemplary embodiments are provided so that this disclosure will be thorough and complete, and will convey the scope of the invention to those skilled in the art. In the drawings, the size of the elements and relative sizes may be exaggerated for clarity. The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. Unless otherwise indicated, a range of values includes the upper and lower limits of the range and any subranges therebetween.

While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the present invention.

Claims (10)

1. A cell reselection priority indication method, applied to a terminal, characterized by comprising:

receiving a radio resource control connection release message sent by network side equipment, wherein the radio resource control connection release message carries IMMC parameter information of an instant messaging management center;

determining special priority information of the service frequency point and effective time of the special priority according to the IMMC parameter information;

and under the condition that the effective time is not overtime, cell reselection is carried out according to the special priority information.

2. The method according to claim 1, wherein the method further comprises:

and deleting the special priority information when the first condition is met, and carrying out cell reselection according to the pre-configured public priority information.

3. The method of claim 2, wherein the first condition comprises at least one of:

the validity time is overtime;

the terminal is switched from an idle state to a connection state;

the non-access stratum NAS of the terminal performs public land mobile network PLMN selection.

4. The method of claim 1, wherein the IMMC parameter information comprises:

an evolved universal terrestrial radio access EUTRA frequency point priority list;

a GERAN frequency priority list of an enhanced data rate GSM evolution technology wireless access network;

universal terrestrial radio access UTRA frequency division duplex FDD frequency point priority list;

UTRA time division duplex TDD frequency point priority list;

a band class priority list of high-speed packet data;

counter information for the special priority.

5. The method according to claim 1, wherein the method further comprises:

determining a frequency point message which does not carry the IMMC parameter information according to the radio resource control connection release message;

and determining to reselect the cell according to the pre-configured public priority information according to the frequency point message which does not carry the IMMC parameter information.

6. A cell reselection priority indication method applied to a network side device, comprising:

and under the condition that the terminal is switched from the connection state to the idle state, sending a radio resource control connection release message to the terminal, wherein the radio resource control connection release message carries IMMC parameter information of an instant messaging management center.

7. A cell reselection priority indicating device, applied to a terminal, comprising:

the receiving module is used for receiving a radio resource control connection release message sent by the network side equipment, wherein the radio resource control connection release message carries IMMC parameter information of the instant messaging management center;

the determining module is used for determining special priority information of the service frequency point and effective time of the special priority according to the IMMC parameter information;

and the processing module is used for carrying out cell reselection according to the special priority information under the condition that the effective time is not overtime.

8. A cell reselection priority indicating device applied to a network side device, comprising:

and the sending module is used for sending a radio resource control connection release message to the terminal under the condition that the terminal is switched from a connection state to an idle state, wherein the radio resource control connection release message carries IMMC parameter information of the instant messaging management center.

9. A terminal comprising a processor configured to:

receiving a radio resource control connection release message sent by network side equipment, wherein the radio resource control connection release message carries IMMC parameter information of an instant messaging management center;

determining special priority information of the service frequency point and effective time of the special priority according to the IMMC parameter information;

and under the condition that the effective time is not overtime, cell reselection is carried out according to the special priority information.

10. A readable storage medium having stored thereon a program or instructions which when executed by a processor performs the steps in the cell reselection priority indication method of any of claims 1 to 5 or claim 6.