CN111148128A - Method performed by user equipment and user equipment - Google Patents
Method performed by user equipment and user equipment Download PDFInfo
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- CN111148128A CN111148128A CN201811306070.4A CN201811306070A CN111148128A CN 111148128 A CN111148128 A CN 111148128A CN 201811306070 A CN201811306070 A CN 201811306070A CN 111148128 A CN111148128 A CN 111148128A
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Abstract
The invention provides a method performed by user equipment, comprising: acquiring parameter configuration information related to paging; determining a DRX period according to the parameter configuration information related to paging; determining PF according to the parameter configuration information related to paging and the DRX period; and determining information related to paging PDCCH monitoring opportunities according to the paging-related parameter configuration information and the PF, for example, determining the PDCCH monitoring opportunities which start from the first PDCCH monitoring opportunity counted from the PF and meet the paging condition as the paging PDCCH monitoring opportunities, and numbering the paging PDCCH monitoring opportunities in sequence from 0 in time sequence.
Description
Technical Field
The present invention relates to the field of wireless communication technologies, and in particular, to a method performed by a user equipment and a corresponding user equipment.
Background
In 2016, a new research Project (see non-patent document 1) on the 5G technical standard was approved at 3GPP (3rd Generation Partnership Project) RAN #71 congress. The purpose of the research project is to develop a New wireless (New Radio: NR) access technology to meet all application scenarios, requirements and deployment environments of 5G. NR has mainly three application scenarios: enhanced mobile broadband Communications (eMBB), massive Machine Type Communications (mMTC), and Ultra-Reliable and Low Latency Communications (URLLC). In 6 months 2017, at 3GPP RAN #75 times congress, the corresponding work item for 5G NR (see non-patent document 2) was approved.
The 5G supports a paging mechanism, for example, when the network needs to initiate a connection to a certain UE and the UE is in an RRC _ IDLE or RRC _ INACTIVE state, the network may send a paging message (paging message) in a certain area or certain areas (e.g., tracking area) to initiate paging to the UE. On the other hand, to reduce power consumption of the UE, the 5G also supports DRX (Discontinuous Reception), and a basic mechanism thereof is to configure one DRX cycle (DRX cycle) to the UE, so that the UE needs to monitor (monitor) downlink control signaling, such as paging-related control signaling, for only a part of time in one DRX cycle, and the UE may be in a sleep state at other times (e.g., the receiver may be turned off).
In the Physical layer, the paging message is carried on a PDSCH (Physical Downlink Shared Channel), and the PDSCH is scheduled through a PDCCH (Physical Downlink Control Channel). One PDCCH is composed of one or more CCEs (control-channel elements), and one CCE is composed of a plurality of REGs (resource-element groups) (e.g., 6) defined within a CORESET (control-resource set). One CORESET includes a plurality of resource blocks in the frequency domain (each resource block is composed of 12 consecutive subcarriers in the frequency domain), and includes one or more (e.g., 1, or 2, or 3) OFDM symbols in the time domain.
The base station may configure whether certain UEs listen for pages. For example, whether to listen for pages on the corresponding BWP may be determined based on whether a parameter pagengsearchspace (also referred to as paging-SearchSpace) is configured (e.g., configured through dedicated signaling).
The UE monitors the PDCCH at some time and frequency domain locations configured by the network where PDCCH transmission may occur. The positions of these time and frequency domains may be correlated to a certain CORESET, and the pattern (e.g., period of occurrence) of the CORESET occurring in the time domain. Such configuration information may be referred to as search space (search space) configuration information, wherein a search space for paging may be referred to as a paging search space (paging search space). Each search space has a search space identifier (search space ID), which may be configured, for example, by a parameter pagengsearchspace. Fig. 6 is an example of a search space configuration in which all PDCCH monitoring opportunities (PDCCH monitoring opportunities) in the search space are numbered in time order from small to large.
Only a part of the PDCCH monitoring opportunities defined in the paging search space may be used for monitoring paging, and this part of the PDCCH monitoring opportunities is called paging PDCCH monitoring opportunities (PDCCH monitoring for paging). A given UE may only monitor a portion of the paging PDCCH monitoring opportunities.
One or more PFs (paging frames) are defined in each DRX cycle, each PF corresponds to one or more POs (paging occasion), and each PO corresponds to a set of paging PDCCH monitoring opportunities. In multi-beam operation (multi-beam operation), each PO may correspond to one beam scanning (beam scanning), and the number of paging PDCCH monitoring opportunities corresponding to each PO may be equal to the number of paging PDCCH monitoring opportunities required for one beam scanning. Fig. 7 is a diagram illustrating an example of a relationship between a DRX cycle, PF, PO, PDCCH monitoring opportunity and paging PDCCH monitoring opportunity when an ID of a search space indicated by a parameter pagengsearchspace is 0, where SSB 0, SSB1, … …, SSB 63 represent candidate SSBs (candidate SS/PBCH block, or candidate SSB) with 64 indices of 0, 1, … …, 63, respectively, and SSB1 and SSB9 are SSBs in which transmission is actually performed (in general, different SSBs may use different transmission beams).
In one DRX cycle, the UE may determine one of the PFs, one of the POs corresponding to the PF, and one of the paging PDCCH monitoring opportunities corresponding to the PO according to a UE identifier (e.g., a UE identity determined according to the parameter 5G-S-TMSI, such as UE _ ID ═ 5G-S-TMSI mod 1024) and/or a reference transmission beam determined for receiving paging (e.g., a transmission beam corresponding to an SSB used when the UE receives MIB or SIB 1), and/or other parameters.
For example, the SFN (System Frame Number, which is also referred to as radio Frame or radio Frame, or simply "Frame") of the PF can be calculated by the following formula:
(SFN+PF_offset)mod T＝(Tdiv N)*(UE_ID mod N)
wherein,
SFN is the system frame number where the PF is to be calculated.
PF _ offset is an offset value used to calculate the PF.
T is the DRX cycle. For example, a default DRX cycle may be configured by a parameter defaultPagingCycle in the paging control channel configuration information (e.g., the configuration information indicated by the PCCH-Config IE). In the existing 3GPP standard specification, the paging control channel configuration information is defined as follows:
n is the number of PFs in DRX cycle. N and PF _ offset together can be configured by the parameter nandpargingframeoffset in the paging control channel configuration information.
The PO number can be calculated by the following formula:
i_s＝floor(UE_ID/N)mod Ns
wherein,
ns is the number of POs per PF. Ns may be configured by parameter Ns in the paging control channel configuration information.
If the ID of the search space indicated by the parameter pagengsearchspace is 0, the UE may determine a PDCCH monitoring opportunity according to a mapping manner from the SSB index to the PDCCH monitoring opportunity in a type 0-PDCCH common search space (i.e., a search space for monitoring scheduling information of SIB1, where the ID is 0), and use the determined PDCCH monitoring opportunity as a paging PDCCH monitoring opportunity. For example, in fig. 7, assuming that Ns is 1 and the base station transmits only SSB1 and SSB9 (i.e., one beam scan only involves 2 beams), the UE detects either SSB1 or SSB9 and calculates the location of the paging PDCCH monitoring opportunity according to the mapping from SSB index to PDCCH monitoring opportunity in the type 0-PDCCH common search space according to the index of the detected SSB. For example, in the SSB and CORESET multiplexing mode 2, if the subcarrier spacing of the SSB is 120kHz and the subcarrier spacing of the PDCCH is 60kHz, the frame number f of the PDCCH monitoring opportunity corresponding to the SSB index i, the slot number s in the frame, and the index b of the first symbol may be determined as follows:
f is equal to the frame number where the SSB with index i is located.
S is equal to the slot number where the SSB with index i is located.
If i is 4k, then b is 0; if i is 4k +1, then b is 1; if i is 4k +2, then b is 6; if i is 4k +3, b is 7. Wherein k is 0, 1.
If the ID of the paging search space indicated by the parameter pagengsearchspace is a value other than 0, the UE determines all PDCCH monitoring opportunities defined by the paging search space, which are not overlapped with uplink symbols, from the first PDCCH monitoring opportunity in the PF as paging PDCCH monitoring opportunities, and numbers the paging PDCCH monitoring opportunities in sequence from 0. Each PO contains S consecutive paging PDCCH monitoring opportunities, where S may be equal to the number of SSBs actually transmitted in the cell (e.g., indicated by parameter SSB-positioninburst in SIB 1). The kth paging PDCCH monitoring opportunity in each PO corresponds to the kth actually transmitted SSB in the cell (for example, the UE may consider that a transmission beam used by the kth paging PDCCH monitoring opportunity in each PO is the same as a transmission beam used by the kth actually transmitted SSB in the cell), where the value of K ranges from 1 to S. The UE monitors the (i _ s +1) th PO, wherein the value range of i _ s is 0 to Ns-1. If the parameter firstdcch-monitoringoccasionOfPO is configured, the (i _ S +1) th PO starts from the paging PDCCH monitoring opportunity indicated by the parameter firstdcch-monitoringOccasionOfPO, otherwise the (i _ S +1) th PO starts from the paging PDCCH monitoring opportunity numbered (i _ S S).
In the design of the existing 3GPP 5G standard specification for paging mechanism, if the ID of the paging search space indicated by the parameter pagengsearchspace is a non-0 value, it is determined that the paging PDCCH monitoring opportunity starts from the first PDCCH monitoring opportunity in the PF, as described above. This requires that any PF contains at least one PDCCH monitoring opportunity. However, the requirement is not always satisfied under all parameter configurations, for example, when the period of the paging search space is greater than 10 ms, some frames do not include any PDCCH monitoring opportunity. Therefore, there is a need to improve the paging mechanism in the existing 3GPP standard specification to ensure that the UE can correctly locate the paging PDCCH monitoring opportunity.
In addition, in the design of the existing 3GPP 5G standard specification regarding the paging mechanism, the UE may consider that the same paging message is transmitted once using all actually transmitted beams (i.e., the S transmission beams) in the cell. This is because, for a UE in RRC _ IDLE state or RRC _ INACTIVE state, the base station does not know which of the S transmission beams the UE determines for receiving a page (i.e., the corresponding SSB index) is. The problem is that in the design of existing paging mechanisms, sometimes paging messages are not always able to be transmitted once each using all S beams. For example, if the ID of the paging search space indicated by the parameter pagengsearchspace is a value other than 0, as described above, each PO includes S consecutive paging PDCCH monitoring opportunities, where the kth paging PDCCH monitoring opportunity uses the transmission beam of the kth actually transmitted SSB in the cell. On the other hand, some base stations only support one transmission beam per symbol, and for these base stations, if one of the S consecutive paging PDCCH monitoring opportunities (assuming that the corresponding SSB index k) overlaps in time with the SSB with index j (i.e. there is at least one symbol overlap), and k ≠ j, then on the two overlapping symbols, the base station cannot support the simultaneous transmission of the corresponding PDCCH and SSB. Fig. 8 shows one such example, where k is 8 and j is 0.
Therefore, there is a need to improve the paging mechanism in the existing 3GPP standard specification to ensure that all the actually transmitted SSBs in a cell can be traversed in one PO.
Documents of the prior art
Non-patent document
Non-patent document 1: RP-160671, New SID Proposal: studio on New Radio Access technology
Non-patent document 2: RP-170855, New WID on New Radio Access Technology
Disclosure of Invention
In order to solve at least part of the above problems, the present invention provides a method performed by a user equipment and the user equipment, which can ensure that the UE can correctly locate a paging PDCCH monitoring opportunity and traverse transmission beams corresponding to all actually transmitted SSBs in a cell by improving the definition of PF and/or PO.
According to the invention, there is provided a method performed by a user equipment, comprising: acquiring parameter configuration information related to paging; determining a DRX period according to the parameter configuration information related to paging; determining PF according to the parameter configuration information related to paging and the DRX period; and determining information related to paging PDCCH monitoring opportunities according to the paging-related parameter configuration information and the PF, for example, determining PDCCH monitoring opportunities which meet paging conditions from a first PDCCH monitoring opportunity counted from the PF as paging PDCCH monitoring opportunities, and numbering the paging PDCCH monitoring opportunities in sequence from 0 in time order.
Preferably, in the above method, the "from the PF" may include the PF (in this case, it may be expressed as "from the start point of the PF"), or may not include the PF (in this case, it may be expressed as "from the start point of the next frame of the PF"). If it is not specifically stated whether or not a PF is included, it is considered to include a PF.
Preferably, in the above method, the paging condition may be one or more of the following (in any combination of and or):
do not overlap with the uplink symbols.
Do not overlap with flexible symbols (flexible symbols).
Does not overlap with the symbols of the SSBs actually transmitted.
Not configured to skip PDCCH monitoring.
According to the invention, there is provided a method performed by a user equipment, comprising: acquiring parameter configuration information related to paging; determining a DRX period according to the parameter configuration information related to paging; and determining the PF according to the paging-related parameter configuration information and the DRX period, for example, deriving a frame number of the PF according to a frame number of a reference frame.
Preferably, in the above method, the frame number (denoted as SFN) of the reference frame may be obtained by one of the following manners:
·(SFN+PF_offset)mod T＝(T div N)*(UE_ID mod N)
·SFN mod T＝(T div N)*(UE_ID mod N)-PF_offset
·(SFN-PF_offset)mod T＝(T div N)*(UE_ID mod N)
·SFN mod T＝(T div N)*(UE_ID mod N)+PF_offset
preferably, in the method, the deriving the frame number of the PF according to the frame number of the reference frame may be that a first frame satisfying the PF condition in the reference direction from the reference frame is determined as the PF.
According to the invention, there is provided a method performed by a user equipment, comprising: acquiring parameter configuration information related to paging; determining a DRX period according to the parameter configuration information related to paging; determining PF according to the parameter configuration information related to paging and the DRX period; and determining, according to the paging-related parameter configuration information and the PF, POs and information related to paging PDCCH monitoring opportunities in the PO, for example, determining the number of the PO and the paging PDCCH monitoring opportunities in the PO, and in the PO, if a certain paging PDCCH monitoring opportunity i overlaps with a certain actually transmitted SSBj in terms of symbols (e.g., overlaps at least one symbol), the paging PDCCH monitoring opportunity i may correspond to the SSBj, and the remaining paging PDCCH monitoring opportunities may correspond to the actually transmitted SSBs in the order of increasing numbers of the paging PDCCH monitoring opportunities and increasing numbers of the actually transmitted SSBs (or indexes of the actually transmitted SSBs).
Effects of the invention
According to the invention, the definition of PF and/or PO can be improved to ensure that the UE can correctly locate the paging PDCCH monitoring opportunity and traverse the transmission beams corresponding to all the actually transmitted SSBs in the cell.
Drawings
The above and other features of the present invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings, in which:
fig. 1 is a flow chart illustrating a user equipment UE to which the present invention relates determining paging related parameters.
Fig. 2 is a flowchart illustrating a method performed by a user equipment according to a first embodiment of the present invention.
Fig. 3 is a flow chart illustrating a method performed by a user equipment according to a second embodiment of the present invention.
Fig. 4 is a flowchart illustrating a method performed by a user equipment according to a third embodiment of the present invention.
Fig. 5 is a schematic diagram illustrating a user equipment of a variation that can perform the method performed by the user equipment described in detail above in this disclosure.
Fig. 6 is a diagram showing an example of a search space configuration of the existing 3GPP standard specification.
Fig. 7 is a diagram showing an example of a relationship between a DRX cycle, PF, PO, PDCCH monitoring opportunity, and paging PDCCH monitoring opportunity.
Fig. 8 is a diagram showing an example of a design of a paging mechanism of the existing 3GPP 5G standard specification.
Detailed Description
The invention is described in detail below with reference to the figures and the detailed description. It should be noted that the present invention should not be limited to the specific embodiments described below. In addition, for the sake of brevity, detailed descriptions of well-known technologies not directly related to the present invention are omitted to prevent confusion of understanding of the present invention.
Embodiments according to the present invention are described in detail below with a 5G mobile communication system and its subsequent evolution as an example application environment. However, it is to be noted that the present invention is not limited to the following embodiments, but is applicable to more other wireless communication systems, such as a communication system after 5G and a 4G mobile communication system before 5G, and the like.
Some terms to which the present invention relates will be described below, and the terms to which the present invention relates are defined herein, unless otherwise specified. The terms given in the invention may adopt different naming manners in LTE, LTE-Advanced Pro, NR and the following communication systems, but the unified terms adopted in the invention can be replaced by the terms adopted in the corresponding systems when being applied to the specific systems.
3 GPP: 3rd Generation partnershift Project, third Generation Partnership Project
BWP: bandwidth Part, Bandwidth fragment
CCE: Control-Channel Element, Control Channel Element
CORESET: Control-Resource Set, controlling Resource Set
DRX: discontinuous Reception, Discontinuous Reception
eMBB: enhanced Mobile Broadband communications
IE: information Element, Information Element
LTE-A: long Term Evolution-Advanced, a Long Term Evolution technology upgrade
MAC: medium Access Control, Medium Access Control
MAC CE: MAC Control Element, MAC Control Element
mMTC: massive Machine Type Communication
NR: new Radio, New Radio
OFDM: orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing
PBCH: physical Broadcast Channel, Physical Broadcast Channel
PCCH: paging Control Channel, Paging Control Channel
PDCCH: physical Downlink Control Channel, Physical Downlink Control Channel
PDSCH: physical Downlink Shared Channel (pdcch)
PF: paging Frame, Paging Frame
PO: paging opportunity
QCL: quasi Co-Located, or Quasi Co-Location, Quasi Co-Location
REG：Resource-Element Group
RRC: radio Resource Control, Radio Resource Control
SFN: system Frame Number, System Frame Number
And (3) SSB: SS/PBCH block, Sync Signal/physical broadcast channel Block
UE: user Equipment, User Equipment
URLLC: Ultra-Reliable and Low Latency Communication
In all the examples and embodiments of the invention, unless otherwise specified:
"PDCCH monitoring opportunity" refers to a time domain opportunity defined by a search space (e.g., paging search space) for monitoring PDCCH, and "paging PDCCH monitoring opportunity" refers to a PDCCH monitoring opportunity satisfying a certain condition among PDCCH monitoring opportunities defined by the paging search space, for example, a part of PDCCH monitoring opportunities that do not overlap with uplink symbols among PDCCH monitoring opportunities defined by the paging search space. In case of clear context, the "paging PDCCH monitoring opportunity" may also be referred to as "PDCCH monitoring opportunity".
"actual transmitted SSB" (or actual transmitted SSB) refers to the SSB actually transmitted in the cell indicated by RRC signaling (e.g., parameter SSB-positioninburst in SIB 1).
One paging PDCCH monitoring opportunity corresponds to a certain actually transmitted SSB, which means that the PDCCH transmitted on the paging PDCCH monitoring opportunity and the actually transmitted SSB use the same transmission beam, or the PDCCH transmitted on the paging PDCCH monitoring opportunity and the actually transmitted SSB are quasi co-located on QCL-type D, or the PDCCH transmitted on the paging PDCCH monitoring opportunity and the actually transmitted SSB are quasi co-located on spatial receive parameters (spatial RX parameters).
If there is no dependency relationship between step X and step Y in the same embodiment or implementation manner (for example, the execution of step X does not depend on the result generated by step Y, and the execution of step Y does not depend on the result generated by step X), the present invention does not limit the execution order between step X and step Y, for example, step X may be executed before step Y, or simultaneously, or after step Y.
"symbol" refers to an OFDM symbol. For example, "not overlapping with an uplink symbol" means "not overlapping with an uplink OFDM symbol".
Fig. 1 is a flowchart illustrating a UE determining paging related parameters, wherein the UE performs the following steps:
in step 101, parameter configuration information related to paging is acquired.
Wherein,
the paging related parameter configuration information may be indicated by system information sent by a base station, or may be indicated by dedicated signaling sent by a base station, or may be derived from predefined information or preconfigured information or other configuration information determined by a UE for receiving a page, or may be derived from one or more of the system information, the dedicated signaling, the predefined information, the preconfigured information, and other configuration information determined by the UE for receiving a page.
The paging-related parameter configuration information may include one or more of:
reference transmission beam. For example, one reference transmission beam that the UE determines for receiving a page. The reference transmission beam may be indicated by an SSB index. The SSB index may be an index of an SSB received by the UE when acquiring the MIB or SIB1, or may be an index of another SSB actually transmitted by the base station.
Paging search space configuration information. For example, a paging search space configured by the parameter pagengsearchspace.
Paging control channel configuration information.
UE-specific DRX configuration information.
UE identifier (denoted UE _ ID). For example, a UE identifier determined according to the parameter 5G-S-TMSI, such as UE _ ID ═ 5G-S-TMSI mod 1024.
Wherein,
the paging control channel configuration information may be indicated by a PCCH-Config IE. The PCCH-Config IE may contain parameters such as one or more of the following:
default paging cycle, denoted T default. For example, configuration is performed by the parameter defaultPagingCycle.
The number of PFs in the DRX cycle is denoted as N. For example, it is configured by the parameter nAndPagingFrameOffset.
PF offset, denoted as PF _ offset. For example, it is configured by the parameter nAndPagingFrameOffset.
The number of POs per PF is denoted as Ns. For example, by parameter ns.
The UE-specific DRX configuration information may include a UE-specific DRX cycle (or DRX value).
The UE-specific DRX configuration information may be indicated by RRC signaling or may be indicated by higher layer (e.g., NAS layer) signaling.
In step 102, a DRX cycle (denoted as T) is determined according to the parameter configuration information related to paging. For example, if a UE-specific DRX value is configured, T is determined by the UE-specific DRX value and the smallest (or shortest) value of the default DRX values (e.g., the default paging cycle T _ default) broadcasted in the system information. In another example, T is determined by the default DRX value if a UE-specific DRX value is not configured.
In step 103, the PF is determined according to the parameter configuration information related to paging and the DRX cycle. For example, the frame number (denoted as SFN) of the PF may be obtained by one of the following ways:
·(SFN+PF_offset)mod T＝(T div N)*(UE_ID mod N)
·SFN mod T＝(T div N)*(UE_ID mod N)-PF_offset
·(SFN-PF_offset)mod T＝(T div N)*(UE_ID mod N)
·SFN mod T＝(T div N)*(UE_ID mod N)+PF_offset
in step 104, other paging related parameters are determined according to the paging related parameter configuration information, and/or the DRX cycle, and/or the PF.
For example, information related to a paging PDCCH monitoring opportunity is determined. For example, a PDCCH monitoring opportunity satisfying the paging condition is determined as a paging PDCCH monitoring opportunity. Wherein the paging condition may be one or more of the following (in any combination of AND or OR):
do not overlap with the uplink symbols.
Do not overlap with flexible symbols (flexible symbols).
Does not overlap with the symbols of the SSBs actually transmitted.
Not configured to skip PDCCH monitoring.
As another example, PO is determined. For example, the number (i _ s) of the PO can be calculated by the following formula:
i_s＝floor(UE_ID/N)mod Ns
and the UE listens to the (i _ s +1) th PO.
As another example, consecutive paging PDCCH monitoring opportunities contained in the POs are determined. For example, the number (S) of consecutive paging PDCCH monitoring opportunities contained in the PO may be equal to the number of SSBs actually transmitted (e.g., indicated by parameter SSB-positioninburst in SIB 1). For another example, if the parameter firstdcch-MonitoringOccasionOfPO is configured, the (i _ S +1) th PO starts from the paging PDCCH monitoring opportunity indicated by the parameter firstdcch-MonitoringOccasionOfPO, otherwise the (i _ S +1) th PO starts from the paging PDCCH monitoring opportunity numbered (i _ S).
Preferred embodiments of the present invention will be described below with reference to specific examples.
[ example one ]
Fig. 2 is a flowchart illustrating a method performed by a user equipment according to a first embodiment of the present invention.
In a first embodiment of the present invention, a user equipment UE performs steps including:
in step 201, parameter configuration information related to paging is acquired. For example, the parameter configuration information related to paging is obtained according to step 101 in the flowchart shown in fig. 1.
In step 202, a DRX cycle is determined according to the parameter configuration information related to paging. The DRX cycle is determined, for example, according to step 102 in the flowchart shown in fig. 1.
In step 203, the PF is determined according to the parameter configuration information related to paging and the DRX cycle. The PF is determined, for example, according to step 103 in the flowchart shown in fig. 1.
In step 204, information related to paging PDCCH monitoring opportunity is determined according to the paging related parameter configuration information and the PF.
For example, a PDCCH monitoring opportunity satisfying the paging condition from the first PDCCH monitoring opportunity counted from the PF is determined as a paging PDCCH monitoring opportunity, and the paging PDCCH monitoring opportunities are numbered in order from 0 in time order. For example, the numbering may be in the order of increasing non-negative integers, i.e., 0, 1, 2, … ….
Wherein,
the above-mentioned "from the PF" may include the PF (in this case, it may be expressed as "from the start point of the PF"), or may not include the PF (in this case, it may be expressed as "from the start point of the next frame of the PF"). If it is not specifically stated whether or not a PF is included, it is considered to include a PF.
The paging condition may be determined according to step 104 in the flowchart shown in fig. 1, or may be determined according to other manners, which is not limited in the present invention.
For example, if the "counted from PF" includes PF, and the paging condition is "not overlapping with uplink symbol", the determining of the information related to the paging PDCCH monitoring opportunity may be expressed as: and determining PDCCH monitoring opportunities which are not overlapped with the uplink symbols and start from the first PDCCH monitoring opportunity counted from the starting point of the PF as paging PDCCH monitoring opportunities, and numbering the paging PDCCH monitoring opportunities in sequence from 0 in time sequence. Alternatively, it can also be expressed as: and determining the PDCCH monitoring opportunities which are not overlapped with the uplink symbols and start from the first PDCCH monitoring opportunity counted from the PF as paging PDCCH monitoring opportunities, and numbering the paging PDCCH monitoring opportunities in sequence from 0 in time sequence. Alternatively, it can also be expressed as: the PDCCH monitoring opportunities which are not overlapped with the uplink symbols and start from the first PDCCH monitoring opportunity in the PF (if any) or after the PF are determined as paging PDCCH monitoring opportunities, and the paging PDCCH monitoring opportunities are numbered from 0 in sequence in time. Alternatively, it can also be expressed as: and determining the PDCCH monitoring opportunities which are not overlapped with the uplink symbols from the PF as paging PDCCH monitoring opportunities, and numbering the paging PDCCH monitoring opportunities in sequence from 0 in time sequence.
Optionally, in the first embodiment of the present invention, the ID of the paging search space may be 0, or may be a value other than 0. Optionally, one or more of the parameters PF _ offset, T, N may take a value when the ID of the paging search space is 0 different from a value when the ID of the paging search space is a value other than 0.
Optionally, in a first embodiment of the present invention, the UE may be in an RRC _ IDLE state, may also be in an RRC _ INACTIVE state, and may also be in an RRC _ CONNECTED state.
Optionally, in the first embodiment of the present invention, if the UE is in the RRC _ CONNECTED state, the indication of the dedicated signaling may cover system information such as an indication of SIB1 for parameter configuration information related to paging (e.g., whether a certain parameter is configured, and/or what the configured value of the parameter is, etc.).
[ example two ]
Fig. 3 is a flow chart illustrating a method performed by a user equipment according to a second embodiment of the present invention.
In the second embodiment of the present invention, the steps performed by the user equipment UE include:
in step 301, parameter configuration information related to paging is acquired. For example, the parameter configuration information related to paging is obtained according to step 101 in the flowchart shown in fig. 1.
In step 302, a DRX cycle is determined according to the parameter configuration information related to paging. The DRX cycle is determined, for example, according to step 102 in the flowchart shown in fig. 1.
In step 303, the PF is determined according to the parameter configuration information related to paging and the DRX cycle.
For example, the frame number of the PF is derived from the frame number of the reference frame.
Wherein,
the frame number (denoted as SFN) of the reference frame may be obtained by one of the following ways:
·(SFN+PF_offset)mod T＝(T div N)*(UE_ID mod N)
·SFN mod T＝(T div N)*(UE_ID mod N)-PF_offset
·(SFN-PF_offset)mod T＝(T div N)*(UE_ID mod N)
·SFN mod T＝(T div N)*(UE_ID mod N)+PF_offset
the frame number of the PF is derived from the frame number of the reference frame in such a manner that the first frame satisfying the PF condition in the reference direction from the reference frame is determined as the PF. Wherein,
the "from the reference frame" may include the reference frame (in this case, it may be expressed as "from the start of the reference frame"), or may not include the reference frame (in this case, it may be expressed as "from the start of the frame next to the reference frame"). If it is not specifically stated whether a reference frame is included, the reference frame may be considered to be included.
The reference direction may be one of the following:
◆ direction of frame number increment if the current frame number is f1If the next frame number is f2＝(f1+1)mod(fmax+1)。
◆ direction of frame number decrement if the current frame number is f1, for example, the next frame number is f2＝(f1+fmax)mod(fmax+1)。
Wherein f ismaxIs the maximum frame number, e.g. fmax1023. If the reference direction is not specified, it can be regarded as a direction increasing in accordance with the frame number.
The PF condition may be one or more of the following (in any combination with or):
contain paging PDCCH monitoring opportunities.
Contain PDCCH monitoring opportunities.
PDCCH monitoring opportunities that do not overlap with the uplink symbols are included.
PDCCH monitoring opportunities that contain no overlap with flexible symbols.
PDCCH monitoring opportunities that contain symbols that do not overlap with the actually transmitted SSBs.
The paging PDCCH monitoring opportunity may be determined according to step 104 in the flowchart shown in fig. 1, or may be determined according to other manners, which is not limited in the present invention.
For example, if the "counted from the reference frame" includes the reference frame, the reference direction is a direction in which the frame number increases, and the PF condition is "including a PDCCH monitoring opportunity not overlapping with the uplink symbol", the derivation of the frame number of the PF according to the frame number of the reference frame may be expressed as: and determining a first frame including a PDCCH monitoring opportunity which does not overlap with the uplink symbol from the start of the reference frame as PF. Alternatively, it can also be expressed as: and determining a first frame from the reference frame, which contains a PDCCH monitoring opportunity which is not overlapped with the uplink symbol, as the PF.
Optionally, in the second embodiment of the present invention, the ID of the paging search space may be 0, or may be a value other than 0. Optionally, one or more of the parameters PF _ offset, T, N may take a value when the ID of the paging search space is 0 different from a value when the ID of the paging search space is a value other than 0. Alternatively, the PF condition when the ID of the paging search space is 0 may be different from the PF condition when the ID of the paging search space is a value other than 0.
Optionally, in the second embodiment of the present invention, the UE may be in an RRC _ IDLE state, may also be in an RRC _ INACTIVE state, and may also be in an RRC _ CONNECTED state.
Optionally, in the second embodiment of the present invention, if the UE is in the RRC _ CONNECTED state, the indication of the dedicated signaling may cover system information such as an indication of SIB1 for parameter configuration information related to paging (e.g., whether a certain parameter is configured, and/or what the configured value of the parameter is, etc.).
[ third example ]
Fig. 4 is a flowchart illustrating a method performed by a user equipment according to a third embodiment of the present invention.
In a third embodiment of the present invention, a user equipment UE performs steps including:
in step 401, parameter configuration information related to paging is acquired. For example, the parameter configuration information related to paging is obtained according to step 101 in the flowchart shown in fig. 1.
In step 402, a DRX cycle is determined according to the parameter configuration information related to paging. The DRX cycle is determined, for example, according to step 102 in the flowchart shown in fig. 1.
In step 403, a PF is determined according to the parameter configuration information related to paging and the DRX cycle. The PF is determined, for example, according to step 103 in the flowchart shown in fig. 1.
In step 404, a PO and information related to a paging PDCCH monitoring opportunity in the PO are determined according to the paging related parameter configuration information and the PF.
For example, the number of a PO may be determined according to step 104 in the flowchart shown in fig. 1. The PO numbers may be determined in other manners, which is not limited by the present invention.
As another example, the paging PDCCH monitoring opportunity and its number may be determined according to the method shown in embodiment one. The paging PDCCH monitoring opportunity and its number may also be determined in other manners, which is not limited in the present invention.
As another example, consecutive paging PDCCH monitoring opportunities contained in the POs may be determined according to step 104 in the flowchart shown in fig. 1. The consecutive paging PDCCH monitoring opportunities contained in the PO may also be determined in other manners, which is not limited by the present invention.
For another example, in the PO, if a certain paging PDCCH monitoring opportunity (denoted by i, hereinafter referred to as paging PDCCH monitoring opportunity i) and a certain actually transmitted SSB (denoted by j, hereinafter referred to as SSBj. optionally, the actually transmitted SSB may also adopt other identifiers, for example, an integer starting from 0 and numbered in the order of increasing SSB index, for example, the actually transmitted SSB is SSB index 0 and SSB index 32, and respectively numbered 0 and 1), and symbols overlap (for example, overlap at least on one symbol), then the paging PDCCH monitoring opportunity i may correspond to the SSBj. And recording the number of the paging PDCCH monitoring opportunities overlapped with the actually transmitted SSB symbols as M (wherein M is more than or equal to 0 and less than or equal to S). For example, if S is 8 and M is 2, the symbols of paging PDCCH monitoring opportunity 1 and SSB 0 overlap, and the symbols of paging PDCCH monitoring opportunity 4 and SSB 32 overlap, then paging PDCCH monitoring opportunity 1 corresponds to SSB 0 and paging PDCCH monitoring opportunity 4 corresponds to SSB 32. For the remaining (S-M) paging PDCCH monitoring opportunities and the remaining (S-M) actually transmitted SSBs, the correspondence from the paging PDCCH monitoring opportunities to the actually transmitted SSBs may be one of the following:
the order in which the numbers of the paging PDCCH monitoring opportunities increase and the order in which the numbers of the actually transmitted SSBs (or the indexes of the actually transmitted SSBs) increase. For example, if the numbers of the (S-M) paging PDCCH monitoring opportunities are 0, 2, 3, 5, 6, and 7 in sequence, and the indexes of the (S-M) actually transmitted SSBs are 8, 16, 24, 40, 48, and 56 in sequence, then paging PDCCH monitoring opportunity 0 corresponds to SSB 8, paging PDCCH monitoring opportunity 2 corresponds to SSB 16, paging PDCCH monitoring opportunity 3 corresponds to SSB 24, paging PDCCH monitoring opportunity 5 corresponds to SSB 40, paging PDCCH monitoring opportunity 6 corresponds to SSB 48, and paging PDCCH monitoring opportunity 7 corresponds to SSB 56.
The order in which the numbers of the paging PDCCH monitoring opportunities increase and the order in which the numbers of the actually transmitted SSBs (or the indexes of the actually transmitted SSBs) decrease. For example, if the numbers of the (S-M) paging PDCCH monitoring opportunities are 0, 2, 3, 5, 6, and 7 in sequence, and the indexes of the (S-M) actually transmitted SSBs are 8, 16, 24, 40, 48, and 56 in sequence, then paging PDCCH monitoring opportunity 0 corresponds to SSB 56, paging PDCCH monitoring opportunity 2 corresponds to SSB 48, paging PDCCH monitoring opportunity 3 corresponds to SSB 40, paging PDCCH monitoring opportunity 5 corresponds to SSB 24, paging PDCCH monitoring opportunity 6 corresponds to SSB 16, and paging PDCCH monitoring opportunity 7 corresponds to SSB 8.
The correspondence from paging PDCCH monitoring opportunity to the actually transmitted SSB is indicated by higher layer signaling (e.g., RRC signaling). For example, the RRC signaling is indicated in an order of increasing numbers of paging PDCCH monitoring opportunities and an order of increasing numbers of actually transmitted SSBs (or indexes of actually transmitted SSBs). As another example, the RRC signaling indication is in an increasing order of the number of the paging PDCCH monitoring opportunities and in a decreasing order of the number of the actually transmitted SSBs (or the index of the actually transmitted SSBs).
Correspondence from paging PDCCH monitoring opportunities to the actually transmitted SSBs determined by other means.
Optionally, in a third embodiment of the present invention, a value of the parameter pagingSearchSpace (or an ID of a search space corresponding to the parameter pagingSearchSpace) in the parameter configuration information related to paging may be 0 or may be a value other than 0.
Optionally, in a third embodiment of the present invention, the UE may be in an RRC _ IDLE state, may also be in an RRC _ INACTIVE state, and may also be in an RRC _ CONNECTED state.
Optionally, in the third embodiment of the present invention, if the UE is in the RRC _ CONNECTED state, the indication of the dedicated signaling may cover system information such as an indication of SIB1 for parameter configuration information related to paging (e.g., whether a certain parameter is configured, and/or what the configured value of the parameter is, etc.).
The above-described embodiments and embodiments can be combined with each other without contradiction. For example, in the third embodiment, the paging PDCCH monitoring opportunity and its number can be determined according to the method shown in the first embodiment.
Modification example
As a modification, a user equipment that can execute the method performed by the user equipment described in detail above in the present disclosure will be described below with reference to fig. 5.
Fig. 5 is a block diagram showing a user equipment UE according to the present invention. As shown in fig. 5, the user equipment UE50 includes a processor 501 and a memory 502. The processor 501 may include, for example, a microprocessor, a microcontroller, an embedded processor, or the like. The memory 502 may include, for example, volatile memory (e.g., random access memory RAM), a Hard Disk Drive (HDD), non-volatile memory (e.g., flash memory), or other memory, among others. The memory 502 has stored thereon program instructions. Which when executed by the processor 501 may perform the above-described method performed by the user equipment as detailed in the present invention.
The method of the invention and the apparatus involved have been described above in connection with preferred embodiments. It will be appreciated by those skilled in the art that the above illustrated approaches are exemplary only, and that the various embodiments described above can be combined with each other without conflict. The method of the present invention is not limited to the steps or sequence shown above. The network nodes and user equipment shown above may comprise further modules, e.g. modules that may be developed or developed in the future, which may be available to a base station, MME, or UE, etc. The various identifiers shown above are exemplary only and not limiting, and the invention is not limited to the specific information elements that are examples of these identifiers. Many variations and modifications may occur to those skilled in the art in light of the teachings of the illustrated embodiments.
It should be understood that the above-described embodiments of the present invention can be implemented by software, hardware, or a combination of both software and hardware. For example, various components within the base station and the user equipment in the above embodiments may be implemented by various means, including but not limited to: analog circuit devices, Digital Signal Processing (DSP) circuits, programmable processors, Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs), programmable logic devices (CPLDs), and the like.
In this application, a "base station" may refer to a mobile communication data and control switching center with a large transmission power and a wide coverage area, and includes functions of resource allocation scheduling, data receiving and transmitting, and the like. "user equipment" may refer to a user mobile terminal, including, for example, a mobile phone, a notebook, etc., which may wirelessly communicate with a base station or a micro base station.
Furthermore, embodiments of the invention disclosed herein may be implemented on a computer program product. More specifically, the computer program product is one of the following: there is a computer readable medium having computer program logic encoded thereon that, when executed on a computing device, provides related operations for implementing the above-described aspects of the present invention. When executed on at least one processor of a computing system, the computer program logic causes the processor to perform the operations (methods) described in embodiments of the present invention. Such arrangements of the invention are typically provided as downloadable software images, shared databases, etc. arranged or encoded in software, code and/or other data structures on a computer readable medium such as an optical medium (e.g., CD-ROM), floppy or hard disk or other medium such as firmware or microcode on one or more ROM or RAM or PROM chips or in one or more modules. The software or firmware or such configurations may be installed on a computing device to cause one or more processors in the computing device to perform the techniques described in embodiments of the present invention.
Further, each functional block or respective feature of the base station device and the terminal device used in each of the above embodiments may be implemented or executed by a circuit, which is typically one or more integrated circuits. Circuitry designed to perform the various functions described in this specification may include a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC) or a general purpose integrated circuit, a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, or discrete hardware components, or any combination thereof. A general-purpose processor may be a microprocessor, or the processor may be an existing processor, controller, microcontroller, or state machine. The general-purpose processor or each circuit described above may be configured by a digital circuit, or may be configured by a logic circuit. Further, when advanced technology capable of replacing the current integrated circuit is developed due to the advancement of semiconductor technology, the present invention can also use the integrated circuit obtained by the advanced technology.
Although the present invention has been described in conjunction with the preferred embodiments thereof, it will be understood by those skilled in the art that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention. Accordingly, the present invention should not be limited by the above-described embodiments, but should be defined by the appended claims and their equivalents.
Claims (10)
1. A method performed by a user equipment, comprising:
acquiring parameter configuration information related to paging;
determining a DRX period according to the parameter configuration information related to paging; and
and determining the PF according to the parameter configuration information related to paging and the DRX period.
2. The method of claim 1,
further comprising:
determining other paging-related parameters according to one or more of the paging-related parameter configuration information, the DRX period and the PF.
3. The method of claim 1,
deriving a frame number of the PF according to a frame number of a reference frame, determining a first frame satisfying a PF condition in a reference direction from the reference frame as the PF,
the PF condition is any one or more of the following conditions (1) to (5):
(1) including paging PDCCH monitoring opportunities;
(2) including PDCCH monitoring opportunities;
(3) including PDCCH monitoring opportunities which are not overlapped with the uplink symbols;
(4) including PDCCH monitoring opportunities that do not overlap with flexible symbols;
(5) including PDCCH monitoring opportunities that do not overlap with the symbols of the actually transmitted SSBs.
4. The method of claim 3,
the frame number of the reference frame may be obtained by any one of the following (1) to (4):
(1)(SFN+PF_offset)mod T＝(T div N)*(UE_ID mod N)；
(2)SFN mod T＝(T div N)*(UE_ID mod N)-PF_offset；
(3)(SFN-PF_offset)mod T＝(T div N)*(UE_ID mod N)；
(4)SFN mod T＝(T div N)*(UE_ID mod N)+PF_offset，
wherein SFN is the frame number of the reference frame, T is DRX period, N is the number of PF in DRX period, PF _ offset is PF offset, and UE _ ID is UE identifier.
5. The method of claim 2,
the other paging related parameters are the number of the PO, information related to the paging PDCCH monitoring opportunity, or the number of consecutive paging PDCCH monitoring opportunities contained in the PO.
6. The method of claim 5,
and determining the PDCCH monitoring opportunities which are started from the first PDCCH monitoring opportunity counted by the PF and meet the paging condition as the paging PDCCH monitoring opportunities, and numbering the paging PDCCH monitoring opportunities in sequence from 0 in time sequence.
7. The method of claim 6,
determining a PDCCH monitoring opportunity satisfying one or more of the following paging conditions (1) to (4) as the paging PDCCH monitoring opportunity:
(1) not overlapping with the uplink symbol;
(2) do not overlap with flexible symbols;
(3) does not overlap with the symbols of the actually transmitted SSB;
(4) is not configured to skip PDCCH monitoring.
8. The method of claim 5,
in the PO, if a certain paging PDCCH monitoring opportunity i overlaps with a symbol of a certain actually transmitted SSB j, the paging PDCCH monitoring opportunity i may correspond to the SSB j, and the remaining paging PDCCH monitoring opportunities correspond to the actually transmitted SSBs according to an increasing order of numbers of the paging PDCCH monitoring opportunities and an increasing order of numbers of the actually transmitted SSBs.
9. The method according to any one of claims 1 to 8,
the paging-related parameter configuration information includes any one or more of the following (1) to (5):
(1) a reference transmission beam;
(2) paging search space configuration information;
(3) paging control channel configuration information.
(4) User equipment specific DRX configuration information;
(5) a user equipment identifier.
10. A user equipment, comprising:
a processor; and
a memory storing instructions;
wherein the instructions, when executed by the processor, perform the method of any of claims 1 to 9.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112425211A (en) * | 2020-10-20 | 2021-02-26 | 北京小米移动软件有限公司 | Communication method and device, network equipment, user equipment and storage medium |
| CN113055987A (en) * | 2021-02-02 | 2021-06-29 | 海能达通信股份有限公司 | Node communication method, device and storage medium |
| WO2021243704A1 (en) * | 2020-06-05 | 2021-12-09 | Oppo广东移动通信有限公司 | Drx parameter switching method and apparatus, and device and storage medium |
| CN113905440A (en) * | 2020-07-06 | 2022-01-07 | 维沃移动通信有限公司 | Channel monitoring and transmission method, device, terminal and network side equipment |
| CN114258696A (en) * | 2020-07-20 | 2022-03-29 | 北京小米移动软件有限公司 | Communication method, user equipment, base station equipment and computer storage medium |
| CN114916247A (en) * | 2020-12-10 | 2022-08-16 | 北京小米移动软件有限公司 | Monitoring determination method and device, and monitoring indication method and device |
| CN115499856A (en) * | 2021-06-17 | 2022-12-20 | 华为技术有限公司 | Information transmission method and communication device |
| WO2023011525A1 (en) * | 2021-08-06 | 2023-02-09 | 大唐移动通信设备有限公司 | Paging processing method and apparatus |
| CN116709589A (en) * | 2020-12-25 | 2023-09-05 | Oppo广东移动通信有限公司 | Method for determining paging cycle and terminal equipment |
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| US20090275368A1 (en) * | 2008-05-01 | 2009-11-05 | Interdigital Patent Holdings, Inc. | Method and apparatus for distributing paging load in long term evolution |
| CN108702732B (en) * | 2016-04-01 | 2021-11-19 | 英特尔公司 | Radio Access Network (RAN) originated paging message transmission method and apparatus |
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| WO2021243704A1 (en) * | 2020-06-05 | 2021-12-09 | Oppo广东移动通信有限公司 | Drx parameter switching method and apparatus, and device and storage medium |
| CN115606136A (en) * | 2020-06-05 | 2023-01-13 | Oppo广东移动通信有限公司（Cn） | DRX parameter switching method, device, equipment and storage medium |
| CN113905440A (en) * | 2020-07-06 | 2022-01-07 | 维沃移动通信有限公司 | Channel monitoring and transmission method, device, terminal and network side equipment |
| CN114258696A (en) * | 2020-07-20 | 2022-03-29 | 北京小米移动软件有限公司 | Communication method, user equipment, base station equipment and computer storage medium |
| CN114258696B (en) * | 2020-07-20 | 2024-04-02 | 北京小米移动软件有限公司 | Communication method, user equipment, base station equipment and computer storage medium |
| CN112425211A (en) * | 2020-10-20 | 2021-02-26 | 北京小米移动软件有限公司 | Communication method and device, network equipment, user equipment and storage medium |
| CN112425211B (en) * | 2020-10-20 | 2023-08-15 | 北京小米移动软件有限公司 | Communication method and device, network equipment, user equipment and storage medium |
| CN114916247A (en) * | 2020-12-10 | 2022-08-16 | 北京小米移动软件有限公司 | Monitoring determination method and device, and monitoring indication method and device |
| CN116709589A (en) * | 2020-12-25 | 2023-09-05 | Oppo广东移动通信有限公司 | Method for determining paging cycle and terminal equipment |
| CN113055987A (en) * | 2021-02-02 | 2021-06-29 | 海能达通信股份有限公司 | Node communication method, device and storage medium |
| CN115499856A (en) * | 2021-06-17 | 2022-12-20 | 华为技术有限公司 | Information transmission method and communication device |
| WO2023011525A1 (en) * | 2021-08-06 | 2023-02-09 | 大唐移动通信设备有限公司 | Paging processing method and apparatus |
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