CN110691390A - Method, device, terminal and storage medium for initiating cell reselection - Google Patents
Method, device, terminal and storage medium for initiating cell reselection Download PDFInfo
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- CN110691390A CN110691390A CN201810723140.XA CN201810723140A CN110691390A CN 110691390 A CN110691390 A CN 110691390A CN 201810723140 A CN201810723140 A CN 201810723140A CN 110691390 A CN110691390 A CN 110691390A
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
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- H04W36/08—Reselecting an access point
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- H04W—WIRELESS COMMUNICATION NETWORKS
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- H04W36/36—Reselection control by user or terminal equipment
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Abstract
The embodiment of the invention discloses a method and a device for initiating cell reselection, a terminal and a storage medium, wherein the method comprises the following steps: the UE determines the voice capability of the UE and the voice scheme supported by the current resident cell; and the UE initiates cell reselection according to the voice capability of the UE and the voice scheme supported by the current resident cell.
Description
Technical Field
Embodiments of the present invention relate to, but not limited to, electronic technologies, and in particular, to a method, an apparatus, a terminal, and a storage medium for initiating cell reselection.
Background
In the existing fourth generation (4)thGeneration, 4G) networks have yet a fifth Generation (5)thGeneration, 5G) network, User Equipments (UEs) used by users may also be mixed, some UEs may support a 5G network, some UEs may only support a 4G network, and some UEs may support both 4G and 5G. In the coming age of 5G, for some legacy UEs, only 4G Voice schemes (New Voice Over New Radio (VoNR) and Evolved Packet System (EPS) Fallback (EPS Fallback)) are supported, so when the UE initiates a Voice service through a 5G network, if the network can provide a Voice service, for example, if the network only supports EPS Fallback, the UE is switched or redirected to 4G to complete the Voice service; if the network only supports VONR, the UE fails to initiate voice service; for the scenario supported by both VONR and EPS fallback, the UE will also fall back to 4G to complete the voice service. For legacy UEs, whether the network can provide EPS fallback or only support VONR, a long latency will be incurred.
Disclosure of Invention
In view of the above, embodiments of the present invention provide a method, an apparatus, a terminal, and a storage medium for initiating cell reselection to solve at least one problem in the prior art.
The technical scheme of the embodiment of the invention is realized as follows:
the embodiment of the invention provides a method for initiating cell reselection, which comprises the following steps:
the UE determines the voice capability of the UE and the voice scheme supported by the current resident cell;
and the UE initiates cell reselection according to the voice capability of the UE and the voice scheme supported by the current resident cell.
The embodiment of the invention provides a device for initiating cell reselection, which comprises:
a determining unit, configured to determine a voice scheme supported by a current cell;
and the reselection unit is used for initiating cell reselection according to the voice capability of the cell and the voice scheme supported by the current resident cell.
An embodiment of the present invention provides a terminal, including a memory and a processor, where the memory stores a computer program operable on the processor, and the processor executes the computer program to implement the steps in the method for initiating cell reselection.
An embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, implements the steps in the above-mentioned method for initiating cell reselection.
The embodiment of the invention provides a method, a device, a terminal and a storage medium for initiating cell reselection, wherein UE determines the voice capability of the UE and a voice scheme supported by a current resident cell; the UE initiates cell reselection according to the voice capability of the UE and the voice scheme supported by the current resident cell; therefore, when the UE capability is limited, the cell reselection based on the capability/service can be initiated autonomously, so that the voice service can be initiated quickly.
Drawings
Fig. 1 is a schematic diagram of an EPS Fallback voice service establishment process in the related art;
FIG. 2 is a schematic diagram of a network architecture according to an embodiment of the present invention;
fig. 3 is a schematic flow chart illustrating an implementation of a method for initiating cell reselection according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram illustrating an apparatus for initiating cell reselection according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a hardware entity of the terminal according to the embodiment of the present invention.
Detailed Description
As 4G (Long Term Evolution, LTE) enters the commercial scale phase, fifth generation mobile communication (5G) oriented in 2020 and the future has become a global research and development hotspot. There are many different voice schemes for 5G, which are associated with different networking modes. Currently, the third Generation Partnership Project (3 GPP) defines two schemes for 5G New air interface (NR, also called New Radio) networking, namely stand-alone networking (SA) and Non-stand-alone Networking (NSA). For the 5G non-independent networking mode, since the control plane is anchored on the 4G network, the Voice service using Voice over LTE (VoLTE) scheme is a natural choice; for the 5G independent networking mode, 3GPP proposes two schemes, namely, New Voice Over New Radio (VoNR) and EPS Fallback (EPS Fallback). The VoNR scheme is that a 5G access network and a core network provide voice services based on an IP Multimedia Subsystem (IMS), and the EPS Fallback scheme is that a terminal falls back to 4G when initiating an IMS call on the 5G, and establishes a VoLTE voice service through the 4G access network and the core network, where the fall back mode may be handover or the like.
The following describes the terminal 5G call setup procedure:
1) the terminal starts up, after a 5G cell is selected to reside, a start-up Registration process (Registration) is firstly carried out, then a Protocol Data Unit (PDU) Session (Session) establishment process is carried out, namely, a Quality of Service (QoS) flow with the level of 5 is established to bear a Session Initiation Protocol (SIP) signaling, and then an IMS Registration process is initiated. And when the terminal finishes IMS registration, entering an idle state.
2) The terminal initiatively initiates a call in an idle state or as a called party, after receiving a paging message, firstly performs a Service Request (Service Request) process, reestablishes a QoS flow with the grade of 5 to carry SIP signaling, and then sends the SIP signaling Invite to the IMS.
3) After receiving the request, the IMS informs the core network to prepare for bearer establishment, and then the core network requests the base station to establish a QoS flow of class 1 to carry the voice service, and at this time, the VoNR and EPS Fallback schemes are distinguished: if the base station selects the EPSFallback scheme, the QoS flow of the voice service is refused to be established, an EPS Fallback process is executed, namely the terminal is switched or redirected to 4G, and then the terminal completes the VoLTE call establishment on the 4G; if the base station selects the VoNR scheme, the Qos flow of the voice service is established, and the terminal is required to be established by transmitting the RRC connection reconfiguration message until the VoNR voice establishment process is completed.
Fig. 1 is a schematic diagram of an EPS Fallback voice service establishment process in the related art, as shown in fig. 1, the process includes:
step S1, when there is a calling/called IMS voice service, it triggers the session establishment process of IMS domain and 5G system, such as sending Invite signaling;
step S2, the core network initiates PDU session modification (PDU session modification) to the wireless side to establish QoS flow for IMS voice;
step S3, the wireless side judges according to the UE capability, wireless condition, network configuration (whether there is N26 interface) and core network indication, whether to trigger fall back, and can request measurement report;
step S4, if deciding to initiate fallback, rejecting PDU session modification request and informing core network to proceed IMS voice fallback;
step S5, entering an EPS (4G) system through redirection or switching;
step S6a, TAU Procedure carries out TAU (tracking area update);
step S6b, attaching, requesting to establish PDN connection, and the reason for the request is switching;
step S7, after the UE successfully resides in the 4G system, the core network initiates PDN connection correction to establish a special bearer for voice;
step S8, the IMS voice session establishment procedure is completed in the 4G network.
In both 4G and 5G networks, the UEs used by the users may be mixed, some UEs may support the 5G network, some UEs may support only the 4G network, and some UEs may support both the 4G and 5G networks. For some legacy UEs, only the 4G voice scheme (VOLTE and CS fallback) is supported, so when it initiates voice service through the 5G network, if the network can provide voice service together, e.g. the network only supports EPS fallback, the UE is switched or redirected to 4G to complete voice service; if the network only supports VONR, the UE fails to initiate voice service; for the scenario supported by both VONR and EPS fallback, the UE will also fall back to 4G to complete the voice service. Whether voice service fails or not, a long latency is incurred. In addition, the extra delay consumption and signaling interaction caused by the problem of UE capability limitation are also one of the problems to be solved by this embodiment.
The technical solution of the present invention is further elaborated below with reference to the drawings and the embodiments.
In this embodiment, a network architecture is provided first, and fig. 2 is a schematic view of a composition structure of the network architecture according to the embodiment of the present invention, as shown in fig. 2, the network architecture includes two or more terminals 11 to 1N and a base station 31, where the terminals 11 to 1N and the base station 31 interact with each other through a network 21. The terminal may be implemented as various types of devices having information processing capabilities, for example, the terminal may include a mobile phone, a tablet computer, a personal digital assistant, a digital phone, a video phone, and the like.
The present embodiment provides a method for initiating cell reselection, where the method is applied to a terminal, and a function implemented by the method may be implemented by a processor in the terminal calling a program code, where of course, the program code may be stored in a computer storage medium, and thus, the terminal at least includes the processor and the storage medium.
Fig. 3 is a schematic flow chart of an implementation of a method for initiating cell reselection according to an embodiment of the present invention, as shown in fig. 3, the method includes:
step S301, UE determines own voice capability and voice scheme supported by the current resident cell;
step S302, the UE initiates cell reselection according to the voice capability of the UE and the voice scheme supported by the current resident cell.
Wherein the voice capability of the UE comprises the capability of the UE to support a first voice scheme and/or a second voice scheme, wherein the first voice scheme comprises a first voice technology and/or a first fallback technology for fallback to a third voice technology; the voice scheme supported by the current resident cell comprises: a first voice scheme and/or a second voice scheme supported by the current camped cell, wherein the second voice scheme includes a second voice technology and/or a second fallback technology for fallback to the first voice technology; the first, second, and third speech techniques are different from each other.
The 4G voice scheme and the 5G voice scheme are taken as examples for explanation, where the first voice scheme may be a 4G voice scheme, the second voice scheme may be a 5G voice scheme, the VOLTE technology in the 4G voice scheme may be a first voice technology, and the CS fallback technology in the 4G voice scheme may be a first fallback technology. The VONR technique in the 5G speech scheme may be a second speech technique, and the EPS fallback technique in the 4G speech scheme may be a second fallback technique.
In other embodiments, the determining, by the UE, the voice scheme supported by the currently camped cell includes: and the UE acquires the voice scheme supported by the current resident cell by registering to the network or broadcasting a message to the network.
In other embodiments, the initiating, by the UE, cell reselection according to its voice capability and the voice scheme supported by the currently camped cell includes:
if the UE supports a first voice technology and the current resident cell supports a first voice scheme and a second voice scheme, or if the UE supports the first voice technology and a first fallback technology and the current resident cell supports the first voice scheme and the second voice scheme, the UE increases the measurement and reselection priorities of the cell/frequency point corresponding to the first voice scheme, reorders the priority of the cell/frequency point corresponding to the first voice scheme, preferentially measures the cell/frequency point corresponding to the first voice scheme, then selects the best cell corresponding to the first voice scheme according to an S criterion, and reselects the best cell to initiate voice service.
Continuing to explain by taking a 4G voice scheme and a 5G voice scheme as examples, the UE only supports the Voice over Ethernet (Volte) or simultaneously supports the Voice over Ethernet (Volte) and the CS fallback, the 5G network supports all voice service schemes, the UE increases the measurement and reselection priorities of the 4G cells/frequency points, reorders the priorities of the 4G cells/frequency points, preferentially measures the 4G cells/frequency points, then selects the best cell according to the S criterion, and reselects the cell to initiate the voice service.
In other embodiments, the initiating, by the UE, cell reselection according to its voice capability and the voice scheme supported by the currently camped cell includes:
if the UE supports a first voice technology and the current resident cell supports a first voice scheme and a second voice scheme, or if the UE supports the first voice technology and a first fallback technology and the current resident cell supports the first voice scheme and the second voice scheme, selecting the best cell corresponding to the first voice scheme meeting S criteria according to the existing measurement results and priority, and reselecting the best cell to initiate voice service.
Continuing to explain by taking a 4G voice scheme and a 5G voice scheme as examples, the UE only supports the Voice or simultaneously supports both the Voice and the CS fallback, the 5G network supports all voice service schemes, selects the best 4G cell meeting the s criterion according to the existing measurement result and the latest priority, and reselects the cell to initiate the voice service;
in other embodiments, the initiating, by the UE, cell reselection according to its voice capability and the voice scheme supported by the currently camped cell includes:
if the UE supports the first fallback technique and the current camped cell supports the first voice scheme and the second voice scheme,
the UE increases the measurement and reselection priorities of the cells/frequency points corresponding to the first voice scheme, reorders the priorities of the cells/frequency points corresponding to the first voice scheme, preferentially measures the cells/frequency points corresponding to the first voice scheme, selects the cell corresponding to the first voice scheme, reselects the cell corresponding to the first voice scheme, and completes voice service by using the first fallback technique.
Continuing to explain by taking a 4G voice scheme and a 5G voice scheme as examples, the UE only supports CS fallback, the 5G network supports all voice service schemes, the UE increases the measurement and reselection priorities of the 4G cells/frequency points, reorders the priorities of the 4G cells/frequency points, preferentially measures the 4G cells/frequency points, selects a suitable 4G cell as soon as possible, initiates CS fallback after reselecting the cell, and completes voice service
In other embodiments, the initiating, by the UE, cell reselection according to its voice capability and the voice scheme supported by the currently camped cell includes:
if the UE supports the first fallback technique and the current camped cell supports the first voice scheme and the second voice scheme,
and selecting the best cell corresponding to the first voice scheme meeting the S criterion according to the existing measurement result and the priority, and reselecting the best cell to initiate voice service.
Continuing to explain by taking the 4G voice scheme and the 5G voice scheme as examples, the UE only supports CS fallback, the 5G network supports all voice service schemes, the best 4G cell meeting the s criterion is selected according to the existing measurement result and the latest priority, and the cell is reselected to initiate voice service
In other embodiments, the initiating, by the UE, cell reselection according to its voice capability and the voice scheme supported by the currently camped cell includes:
if the UE supports a first voice scheme and the current resident cell supports a second voice technology or a second fallback technology, the UE increases the measurement and reselection priority of the cell/frequency point corresponding to the first voice scheme, reorders the priority of the cell/frequency point corresponding to the first voice scheme, preferentially measures the cell/frequency point corresponding to the first voice scheme, selects the best cell corresponding to the first voice scheme according to an S criterion, and reselects the best cell to initiate voice service; or, the UE selects the best cell corresponding to the first voice scheme meeting the S criterion according to the existing measurement result and the priority, and reselects the best cell to initiate a voice service.
Continuing to explain by taking a 4G voice scheme and a 5G voice scheme as examples, the UE only supports the 4G voice scheme, the 5G network only supports EPS fallback or only supports VONR, the UE increases the measurement and reselection priorities of the 4G cells/frequency points, carries out priority reordering on the 4G cells/frequency points, preferentially measures the 4G cells/frequency points, then selects the best cell according to the S criterion, and reselects the cell to initiate voice service; or selecting the best 4G cell meeting the s criterion according to the existing measurement result and the latest priority, and reselecting the cell to initiate the voice service.
In other embodiments, the method further comprises:
step S11, storing the heightened measurement and reselection priorities;
step S12, when initiating the voice service, the UE initiates cell reselection according to its voice capability, the voice scheme supported by the current residential cell, and the increased measurement and reselection priorities.
Here, the UE may store the 4G cell/frequency point ranking order result initiated for the voice service for 1 time, or n times, or within a certain time period, as a reference for subsequent reselection, or as a basis for priority ranking of subsequent 4G cells/frequency points.
In other embodiments, the initiating, by the UE, cell reselection according to its voice capability and the voice scheme supported by the currently camped cell includes:
step S21, obtaining a modified S criterion, wherein the modified S criterion is obtained by adding the relevant bias about the voice scheme in the S criterion, and the value of the relevant bias about the voice scheme is different according to the voice capability of the UE and the voice scheme supported by the cell;
and step S22, cell reselection is initiated according to the self voice capability and the modified S criterion.
In the implementation process, the network side can also acquire the voice capability of the UE, then determine different S criteria for the UE according to the voice capability of the UE, and then tell the S criteria corresponding to the UE. At this time, the UE performs cell reselection according to the S criterion, at this time, the relevant offset in the S criterion may have a determined value, and of course, the UE may also modify the value of the relevant offset according to the actual situation. In other embodiments, the network side may inform the UE of a series of S criteria, that is, different S criteria corresponding to different voice capabilities, and then the UE selects a suitable S criterion according to its own capabilities.
When UE needs to initiate a service other than the voice service, the newly added related bias value about the voice scheme is 0; when UE wants to initiate voice service, the value of the relevant bias related to the voice scheme is different according to the voice capability of the UE and the different voice schemes supported by the cell, so that the cell matched with the capability of the UE can meet the modified S criterion firstly and is reselected.
In the implementation process, modification of the S-criteria may be considered, for example, a speech scheme related offset is newly added to the S-criteria, for example, when the UE is to initiate a service other than speech, the offset is set to 0 for all cells; when the UE is to initiate voice service, according to the capability (supporting the voice and/or CS fallback, VONR and the like), the UE sets different offset values for a 5G cell only supporting the EPS fallback, a 5G cell only supporting the VONR, a 5G cell simultaneously supporting the EPS fallback and the VONR, a 4G cell only supporting the voice, a 4G cell only supporting the CS fallback, and a 4G cell simultaneously supporting the voice and the CS fallback so that the cell matching the capability of the UE can meet the S criterion first and be reselected; and there may be network broadcast without setting the offset value, or it may be unique to the UE.
In other embodiments, the initiating, by the UE, cell reselection according to its voice capability and the voice scheme supported by the currently camped cell includes:
step S31, the UE maintains a base station information list, and the voice scheme supported by the cell is recorded in the base station information list;
step S32, the UE selects the cell meeting the voice capability of the UE from the base station information list, and the selected cell is listed in a selectable cell list;
and step S33, cell reselection is initiated according to the selectable cell list and the S criterion.
In the embodiment, the UE is reselected to a proper 4G cell more quickly, the 5G cell where the UE resides broadcasts the neighbor cell information, and if the 4G frequency points/cells support the Volte service and other messages, the UE is helped to perform 4G frequency point/cell screening, priority sequencing, bias setting and the like, and the time consumed by the UE cell reselection is reduced; if the scheme is adopted, the UE maintains a base station information list and records the capability condition of the base station to which the accessed cell belongs. For cells that meet the UE requirements, the UE lists them in a selectable cell list and then performs cell selection using existing S criteria for them.
This embodiment optimizes the 5G voice service establishment procedure, and provides a new method for initiating cell reselection. In the method, the UE knows the voice capability of the UE, namely the supported voice service scheme (such as supporting a 4G voice scheme or a 5G voice scheme); the UE acquires a voice scheme supported by the current resident cell in a registration or network broadcast message mode; when UE wants to initiate voice service, UE will decide whether to perform cell reselection according to its own capability:
there are two schemes for initiating cell reselection:
the first scheme is as follows: traffic-based reselection priority adjustment
1) The UE only supports the Voice service scheme or supports both the Voice service scheme and the CS fallback scheme, and a 5G network supports all voice service schemes; or selecting the best 4G cell meeting the s criterion according to the existing measurement result and the latest priority, and reselecting the cell to initiate the voice service.
2) The UE only supports CS fallback, the 5G network supports all voice service schemes, the UE increases the measurement and reselection priorities of the 4G cell/frequency point region, carries out priority reordering on the 4G cell/frequency point, preferentially measures the 4G cell/frequency point, selects a proper 4G cell as soon as possible, and initiates CS fallback after reselecting the cell to complete voice service; or selecting the best 4G cell meeting the s criterion according to the existing measurement result and the latest priority, and reselecting the cell to initiate the voice service.
3) The UE only supports a 4G voice scheme, the 5G network only supports EPS fallback or VONR, the UE increases the measurement and reselection priorities of the 4G cells/frequency points, carries out priority reordering on the 4G cells/frequency points, preferentially measures the 4G cells/frequency points, then selects the best cell according to an S criterion, and reselects the cell to initiate voice service; or selecting the best 4G cell meeting the s criterion according to the existing measurement result and the latest priority, and reselecting the cell to initiate the voice service.
4) The UE supports a 5G scheme (a default supports a 4G voice scheme), and the 5G network supports the 5G voice scheme, at this time, the UE keeps on a 5G cell, and initiates VONR preferentially through the 5G cell.
Scheme II: service-based S criteria
In the cell selection of the 5G system, the terminal selects the cell with the strongest signal for access according to the following S criteria: i.e. both RSRP and RSRQ need to be larger than a certain threshold.
Srxlev>0 and Squal>0 (1-1)；
Srxlev＝Qrxlevmeas–(Qrxlevmin+Qrxlevminoffset)–Pcompensation>0
Qrxlevmeas>Qrxlevmin+Qrxlevminoffset+Pcompensation
RSRP>Qrxlevmin+Qrxlevminoffset+Pcompensation(1-2)；
Squal＝Qqualmeas–(Qqualmin+Qqualminoffset)>0
Qqualmeas>Qqualmin+Qqualminoffset
RSRQ>Qqualmin+Qqualminoffset(1-3)；
In the above equations (1-1) to (1-3), Srxlev denotes a cell selection reception level value, Squal denotes a cell selection quality value, QrxlevmeasIndicating measured Reference Signal Received Quality (RSRQ), QqualmeasReference Signal Received Power (RSRP), Q, representing measurementsrxlevminIndicating the minimum received power, Q, of the serving cellqualminIndicating the worst reception quality, Q, of the serving cellrxlevminoffsetOffset value, Q, indicating the minimum received power of the serving cellqualminoffset，PcompensationAnd representing the compensation value, the maximum transmission power allowed by the network and the maximum transmission power difference of the terminal power level. The current LTE terminal is only a POWER CLASS 3(POWER CLASS3) terminal, PpoweclassThe maximum output power of (2) is 23 dBm. The Pemax value may be confirmed by a system message, also typically 23 dbm. Common P in networkcompensationTypically 0.
The above S criterion may also be changed to equations (2-1) to (2-3):
Srxlev>0and Squal>0 (2-1)；
Srxlev＝Qrxlevmeas–(Qrxlevmin+Qrxlevminoffset)–Pcompensation(2-2)；
Squal＝Qqualmeas–(Qqualmin+Qqualminoffset) (2-3)；
modification of the S-criteria may be considered, for example, a bias associated with a new voice scheme added to the S-criteria may be considered, for example, when the UE is to initiate a service other than voice, the bias is set to 0 for all cells; when the UE is to initiate voice service, according to the capability (supporting the voice and/or CS fallback, VONR and the like), the UE sets different offset values for a 5G cell only supporting the EPS fallback, a 5G cell only supporting the VONR, a 5G cell simultaneously supporting the EPS fallback and the VONR, a 4G cell only supporting the voice, a 4G cell only supporting the CS fallback, and a 4G cell simultaneously supporting the voice and the CS fallback so that the cell matching the capability of the UE can meet the S criterion first and be reselected; and there may be network broadcast without setting the offset value, or it may be unique to the UE. The value can be positive or negative, and the specific value and the positive or negative are determined by the configuration. Finally, the S criterion in this embodiment may be equations (3-1) to (3-3):
Srxlev>0and Squal>0 (3-1)；
Srxlev＝Qrxlevmeas–(Qrxlevmin+Qrxlevminoffset+QrelevVoice)-Pcompensation(3-2)；
Squal＝Qqualmeas–(Qqualmin+Qqualminoffset+QrelevVoice) (3-3)；
the above equation (3-2) is a modification of the equation (2-2), and the above equation (3-3) is a modification of the equation (2-3), i.e., both are added with the associated bias Q with respect to the speech schemerelevVoice. In other embodiments, since the formula (2-2) is related to quality, the formula (2-2) may not be modified, that is, the modified S criterion may be the formulas (4-1) to (4-3):
Srxlev>0and Squal>0 (4-1)；
Srxlev＝Qrxlevmeas–(Qrxlevmin+Qrxlevminoffset+QrelevVoice)-Pcompensation(4-2)；
Squal＝Qqualmeas–(Qqualmin+Qqualminoffset) (4-3)。
in addition, the scheme can be further optimized:
1) in order to enable the UE to reselect a proper 4G cell more quickly, the 5G cell where the UE resides broadcasts neighbor cell information, such as which 4G cells/frequency points are messages supporting Volte services, and the like, so that the UE is helped to perform 4G cell/frequency point screening, priority sequencing, bias setting and the like, and the time consumed by UE cell reselection is reduced;
if the scheme is adopted, a base station information list is maintained at the UE, and the capacity condition of the base station to which the accessed cell belongs is recorded; for cells that meet the UE requirements, the UE lists them in a selectable cell list and then performs cell selection using existing S criteria for them.
Alternatively, the first and second electrodes may be,
2) in the process of UE registration (registration), the network issues some measurement parameters comprehensively considering the network capability and the UE capability for cell reselection after the UE registration is completed.
For the reselection of the 4G cell/frequency point, the UE determines the cell reselection based on the service according to the self capability and the network support service, particularly for the priority regulation scheme, the priority of the cell/frequency point supporting the required service is set to be the highest, and the cell selection/reselection priority (broadcast or special signaling) issued by the network is not followed, so that the reselection based on the capability/service is completed firstly.
In addition, the UE may store the 4G cell/frequency point ranking order result initiated for the voice service for 1 time, or n times, or within a certain time period, as a reference for subsequent reselection, or as a basis for priority ranking of subsequent 4G cells/frequency points.
In the embodiment, when the capability of the UE is limited, the UE autonomously initiates cell reselection based on the capability/service, so as to realize rapid initiation of voice service; the network broadcasts the cell reselection auxiliary information for the UE, helps the UE to screen the cells, or carries out cell priority sequencing; and configuring measurement parameters based on the network capability and the UE capability.
From the foregoing, it can be seen that the present embodiment provides a scheme for adjusting an originating cell reselection based on a service reselection priority, and a scheme for modifying an originating cell reselection based on an S criterion of a service.
Based on the foregoing embodiments, an embodiment of the present invention provides a device for initiating cell reselection, where the device includes each included unit and each module included in each unit, and may be implemented by a processor in a terminal; of course, the implementation can also be realized through a specific logic circuit; in implementation, the processor may be a Central Processing Unit (CPU), a Microprocessor (MPU), a Digital Signal Processor (DSP), a Field Programmable Gate Array (FPGA), or the like.
Fig. 4 is a schematic structural diagram of an apparatus for initiating cell reselection according to an embodiment of the present invention, as shown in fig. 4, the apparatus 400 includes a determining unit 401 and a reselecting unit 402, where:
a determining unit 401, configured to determine a voice capability of itself and a voice scheme supported by a current cell;
a reselecting unit 402, configured to initiate cell reselection according to its voice capability and a voice scheme supported by the current camped cell.
In other embodiments, the determining unit is configured to obtain the voice scheme supported by the currently camped cell by registering with the network or broadcasting a message to the network.
In other embodiments, the voice capability of the UE includes a capability of the UE to support a first voice scheme and/or a second voice scheme, wherein the first voice scheme includes a first voice technology and/or a first fallback technology for fallback to a third voice technology;
the voice scheme supported by the current resident cell comprises: a first voice scheme and/or a second voice scheme supported by the current camped cell, wherein the second voice scheme includes a second voice technology and/or a second fallback technology for fallback to the first voice technology;
the first, second, and third speech techniques are different from each other.
In other embodiments, the reselection unit is configured to, if the UE supports the first voice technology and the current camped cell supports the first voice scheme and the second voice scheme, or if the UE supports the first voice technology and the first fallback technology and the current camped cell supports the first voice scheme and the second voice scheme,
the measurement and reselection priorities of the cells/frequency points corresponding to the first voice scheme are increased, the cells/frequency points corresponding to the first voice scheme are reordered according to the priorities, the cells/frequency points corresponding to the first voice scheme are measured preferentially, then according to an S criterion, the best cell corresponding to the first voice scheme is selected, and the best cell is reselected to initiate voice services.
In other embodiments, the reselection unit is configured to:
if the UE supports the first voice technology and the current camped cell supports the first voice scheme and the second voice scheme, or if the UE supports the first voice technology and the first fallback technology and the current camped cell supports the first voice scheme and the second voice scheme,
and selecting the best cell corresponding to the first voice scheme meeting the S criterion according to the existing measurement result and the priority, and reselecting the best cell to initiate voice service.
In other embodiments, the reselection unit is configured to:
if the UE supports the first fallback technique and the current camped cell supports the first voice scheme and the second voice scheme,
the measurement and reselection priorities of the cells/frequency points corresponding to the first voice scheme are increased, the cells/frequency points corresponding to the first voice scheme are subjected to priority reordering, the cells/frequency points corresponding to the first voice scheme are measured preferentially, the cell corresponding to the first voice scheme is selected, the cell corresponding to the first voice scheme is reselected, and voice services are completed by utilizing the first fallback technology.
In other embodiments, the reselection unit is configured to:
if the UE supports the first fallback technique and the current camped cell supports the first voice scheme and the second voice scheme,
and selecting the best cell corresponding to the first voice scheme meeting the S criterion according to the existing measurement result and the priority, and reselecting the best cell to initiate voice service.
In other embodiments, the reselection unit is configured to:
if the UE supports a first voice scheme and the current camped cell supports a second voice technology or a second fallback technology,
the measurement and reselection priorities of the cells/frequency points corresponding to the first voice scheme are increased, the cells/frequency points corresponding to the first voice scheme are subjected to priority reordering, the cells/frequency points corresponding to the first voice scheme are measured preferentially, then according to an S criterion, the best cell corresponding to the first voice scheme is selected, and the best cell is reselected to initiate voice service; alternatively, the first and second electrodes may be,
and selecting the best cell corresponding to the first voice scheme meeting the S criterion according to the existing measurement result and the priority, and reselecting the best cell to initiate voice service.
In other embodiments, the method further comprises:
the storage unit is used for storing the heightened measurement and reselection priorities;
correspondingly, the reselection unit is configured to initiate cell reselection by the UE according to the voice capability of the UE, the voice scheme supported by the current residential cell, and the increased measurement and reselection priority when initiating the voice service.
In other embodiments, the reselection unit includes:
an obtaining module, configured to obtain a modified S criterion, where the modified S criterion is obtained by adding the relevant bias for the voice scheme to the S criterion, and a value of the relevant bias for the voice scheme is different according to different voice capabilities of the UE and different voice schemes supported by a cell;
and the first reselection module is used for initiating cell reselection according to the self voice capability and the modified S criterion.
In other embodiments, when the UE wants to initiate a service other than the voice service, the newly added relevant offset value for the voice scheme is 0; when UE wants to initiate voice service, the value of the relevant bias related to the voice scheme is different according to the difference between the voice capability of the UE and the voice scheme supported by the cell, so that the cell matched with the capability of the UE can meet the modified S criterion and be reselected.
In other embodiments, the reselection unit includes:
the maintenance module is used for maintaining a base station information list, and the voice schemes supported by the cell are recorded in the base station information list;
a selection module, configured to select a cell that meets the voice capability of the UE from the base station information list, and list the selected cell in a selectable cell list;
and the second reselection module is used for initiating cell reselection according to the selectable cell list and the S criterion.
The above description of the apparatus embodiments, similar to the above description of the method embodiments, has similar beneficial effects as the method embodiments. For technical details not disclosed in the embodiments of the apparatus according to the invention, reference is made to the description of the embodiments of the method according to the invention for understanding.
It should be noted that, in the embodiment of the present invention, if the method for initiating cell reselection is implemented in the form of a software functional module and sold or used as a standalone product, the method may also be stored in a computer-readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a terminal to execute all or part of the methods according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read Only Memory (ROM), a magnetic disk, or an optical disk. Thus, embodiments of the invention are not limited to any specific combination of hardware and software.
Correspondingly, an embodiment of the present invention provides a terminal, including a memory and a processor, where the memory stores a computer program operable on the processor, and the processor executes the computer program to implement the steps in the method for initiating cell reselection.
Correspondingly, an embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, implements the steps in the above-mentioned method for initiating cell reselection.
Here, it should be noted that: the above description of the storage medium and device embodiments is similar to the description of the method embodiments above, with similar advantageous effects as the method embodiments. For technical details not disclosed in the embodiments of the storage medium and the apparatus according to the invention, reference is made to the description of the embodiments of the method according to the invention.
It should be noted that fig. 5 is a schematic diagram of a hardware entity of a terminal in an embodiment of the present invention, and as shown in fig. 5, the hardware entity of the terminal 500 includes: a processor 501, a communication interface 502 and a memory 503, wherein
The processor 501 generally controls the overall operation of the terminal 500.
The communication interface 502 may enable the terminal to communicate with other terminals or servers via a network.
The Memory 503 is configured to store instructions and applications executable by the processor 501, and may also buffer data to be processed or already processed by the processor 501 and modules in the terminal 500, and may be implemented by a FLASH Memory (FLASH) or a Random Access Memory (RAM).
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. It should be understood that, in various embodiments of the present invention, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention. The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described device embodiments are merely illustrative, for example, the division of the unit is only a logical functional division, and there may be other division ways in actual implementation, such as: multiple units or components may be combined, or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the coupling, direct coupling or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection between the devices or units may be electrical, mechanical or other forms.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units; can be located in one place or distributed on a plurality of network units; some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
Those of ordinary skill in the art will understand that: all or part of the steps for realizing the method embodiments can be completed by hardware related to program instructions, the program can be stored in a computer readable storage medium, and the program executes the steps comprising the method embodiments when executed; and the aforementioned storage medium includes: various media that can store program codes, such as a removable Memory device, a Read Only Memory (ROM), a magnetic disk, or an optical disk.
Alternatively, the integrated unit of the present invention may be stored in a computer-readable storage medium if it is implemented in the form of a software functional module and sold or used as a separate product. Based on such understanding, the technical solutions of the embodiments of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a terminal to execute all or part of the methods according to the embodiments of the present invention. And the aforementioned storage medium includes: a removable storage device, a ROM, a magnetic or optical disk, or other various media that can store program code.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present invention, and all such changes or substitutions are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (15)
1. A method of initiating cell reselection, the method comprising:
the UE determines the voice capability of the UE and the voice scheme supported by the current resident cell;
and the UE initiates cell reselection according to the voice capability of the UE and the voice scheme supported by the current resident cell.
2. The method of claim 1, wherein the UE determines the voice scheme supported by the currently camped cell, comprising:
and the UE acquires the voice scheme supported by the current resident cell by registering to the network or broadcasting a message to the network.
3. The method of claim 1, wherein the voice capability of the UE comprises a capability of the UE to support a first voice scheme and/or a second voice scheme, wherein the first voice scheme comprises a first voice technology and/or a first fallback technology for fallback to a third voice technology;
the voice scheme supported by the current resident cell comprises: a first voice scheme and/or a second voice scheme supported by the current camped cell, wherein the second voice scheme includes a second voice technology and/or a second fallback technology for fallback to the first voice technology;
the first, second, and third speech techniques are different from each other.
4. The method of claim 3, wherein the UE initiates cell reselection according to its voice capability and a voice scheme supported by the currently camped cell, and wherein the method comprises:
if the UE supports the first voice technology and the current camped cell supports the first voice scheme and the second voice scheme, or if the UE supports the first voice technology and the first fallback technology and the current camped cell supports the first voice scheme and the second voice scheme,
the UE increases the measurement and reselection priorities of the cells/frequency points corresponding to the first voice scheme, reorders the priorities of the cells/frequency points corresponding to the first voice scheme, preferentially measures the cells/frequency points corresponding to the first voice scheme, selects the best cell corresponding to the first voice scheme according to an S criterion, and reselects the best cell to initiate voice services.
5. The method of claim 3, wherein the UE initiates cell reselection according to its voice capability and a voice scheme supported by the currently camped cell, and wherein the method comprises:
if the UE supports the first voice technology and the current camped cell supports the first voice scheme and the second voice scheme, or if the UE supports the first voice technology and the first fallback technology and the current camped cell supports the first voice scheme and the second voice scheme,
and selecting the best cell corresponding to the first voice scheme meeting the S criterion according to the existing measurement result and the priority, and reselecting the best cell to initiate voice service.
6. The method of claim 3, wherein the UE initiates cell reselection according to its voice capability and a voice scheme supported by the currently camped cell, and wherein the method comprises:
if the UE supports the first fallback technique and the current camped cell supports the first voice scheme and the second voice scheme,
the UE increases the measurement and reselection priorities of the cells/frequency points corresponding to the first voice scheme, reorders the priorities of the cells/frequency points corresponding to the first voice scheme, preferentially measures the cells/frequency points corresponding to the first voice scheme, selects the cell corresponding to the first voice scheme, reselects the cell corresponding to the first voice scheme, and completes voice service by using the first fallback technique.
7. The method of claim 3, wherein the UE initiates cell reselection according to its voice capability and a voice scheme supported by the currently camped cell, and wherein the method comprises:
if the UE supports the first fallback technique and the current camped cell supports the first voice scheme and the second voice scheme,
and selecting the best cell corresponding to the first voice scheme meeting the S criterion according to the existing measurement result and the priority, and reselecting the best cell to initiate voice service.
8. The method of claim 3, wherein the UE initiates cell reselection according to its voice capability and a voice scheme supported by the currently camped cell, and wherein the method comprises:
if the UE supports a first voice scheme and the current camped cell supports a second voice technology or a second fallback technology,
the UE increases the measurement and reselection priorities of the cells/frequency points corresponding to the first voice scheme, reorders the priorities of the cells/frequency points corresponding to the first voice scheme, preferentially measures the cells/frequency points corresponding to the first voice scheme, selects the best cell corresponding to the first voice scheme according to an S criterion, and reselects the best cell to initiate voice service; alternatively, the first and second electrodes may be,
and the UE selects the best cell corresponding to the first voice scheme meeting the S criterion according to the existing measurement result and the priority, and reselects the best cell to initiate voice service.
9. The method according to any one of claims 1 to 8, further comprising:
storing the heightened measurement and reselection priorities;
and when the voice service is initiated, the UE initiates cell reselection according to the voice capability of the UE, the voice scheme supported by the current resident cell and the increased measurement and reselection priority.
10. The method according to any one of claims 1 to 3, wherein the UE initiates cell reselection according to its voice capability and a voice scheme supported by the current camped cell, comprising:
acquiring a modified S criterion, wherein the modified S criterion is obtained by adding the relevant offset related to the voice scheme in the S criterion, and the value of the relevant offset related to the voice scheme is different according to the voice capability of the UE and the different voice schemes supported by the cell;
and initiating cell reselection according to the self voice capability and the modified S criterion.
11. The method of claim 10, wherein when the UE is about to initiate a service other than the voice service, the newly added correlation offset value for the voice scheme is 0; when UE wants to initiate voice service, the value of the relevant bias related to the voice scheme is different according to the difference between the voice capability of the UE and the voice scheme supported by the cell, so that the cell matched with the capability of the UE can meet the modified S criterion and be reselected.
12. The method according to any one of claims 1 to 3, wherein the UE initiates cell reselection according to its voice capability and a voice scheme supported by the current camped cell, comprising:
the UE maintains a base station information list, and the voice schemes supported by the cell are recorded in the base station information list;
the UE selects a cell meeting the voice capability of the UE from the base station information list, and the selected cell is listed in a selectable cell list;
and initiating cell reselection according to the selectable cell list and an S criterion.
13. An apparatus that initiates cell reselection, the apparatus comprising:
a determining unit, configured to determine a voice scheme supported by a current cell;
and the reselection unit is used for initiating cell reselection according to the voice capability of the cell and the voice scheme supported by the current resident cell.
14. A terminal comprising a memory and a processor, the memory storing a computer program operable on the processor, wherein the processor when executing the program performs the steps in the method of initiating cell reselection of any of claims 1 to 12.
15. A computer-readable storage medium, having stored thereon a computer program, the computer program, when being executed by a processor, being adapted to carry out the steps of the method of initiating a cell reselection as set forth in any one of claims 1 to 12.
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