CN115119339A - Method performed by user equipment and user equipment - Google Patents
Method performed by user equipment and user equipment Download PDFInfo
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- CN115119339A CN115119339A CN202110299720.2A CN202110299720A CN115119339A CN 115119339 A CN115119339 A CN 115119339A CN 202110299720 A CN202110299720 A CN 202110299720A CN 115119339 A CN115119339 A CN 115119339A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
- H04W76/27—Transitions between radio resource control [RRC] states
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
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- H04W76/20—Manipulation of established connections
- H04W76/28—Discontinuous transmission [DTX]; Discontinuous reception [DRX]
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Abstract
The invention provides a method executed by User Equipment (UE), which comprises the following steps: if the extended discontinuous reception eDRX configured for the UE meets a first configuration requirement, the UE monitors the paging time PO of the UE according to the discontinuous reception DRX cycle to acquire a short message in the RRC inactive state small data transmission process; and when the short message acquired by the UE carries a system message change indication, the UE executes a system message acquisition process from the next system message modification period.
Description
Technical Field
The present invention relates to the field of wireless communication technology, and more particularly, to a method performed by a user equipment and a corresponding user equipment.
Background
With the standardization and the gradual commercialization of 5G, the application scenes are more diversified. First, in the industrial wireless sensor scenario, various sensors are diverse in kind and use. Some of these sensors require high reliability, low latency or large bandwidth, some require ultra-low cost and long battery life, and some require intermediate requirements. This portion of the devices may be considered to be some reduced capability NR devices. Secondly, video surveillance and information gathering are commonly used with the planning and development of smart cities, and wireless devices for such applications also have similar features to the reduced-capability NR devices mentioned above. Finally, numerous wearable devices, such as intelligent wrist-watch, intelligent bracelet, health status monitoring appearance etc. also have the characteristics of the NR equipment of reducing ability. For this type of reduced capacity NR device, the existing standards do not support it well to meet the optimum performance requirements.
For the above reasons, research projects for reduced capability NR devices of Release 17 (see non-patent document: RP-193238 New SID on Study on Support of reduced capability NR devices) at 3rd Generation Partnership Project (3 GPP) RAN #86 at 12.2019 were approved. The research project determines the applicable scenes of the project to be industrial wireless sensors, video monitoring and wearable equipment. One of the goals of this research project is the research on power consumption saving and battery life enhancement of reduced-capability NR devices, including reduced monitoring of downlink control channel (PDCCH), eDRX (extended discontinuous reception) in RRC inactive state or idle state, relaxation of Radio Resource Management (RRM) measurements for stationary devices. The research goal is mainly directed to industrial wireless sensors and wearable devices.
The small data transmission in the NR inactive state is a work item of the 3GPP in release 17, and the work item is to shorten transmission delay and save signaling overhead. A UE entering an RRC inactive state may send a Transport Block (Transport Block) carrying data in the configured uplink assignment for small data transfer. And in the process of random access, transmitting the transport block carrying the user data in the message three or the message A. Both of these ways may be referred to as small data transmissions. The small data transmission can enable the UE to realize data transmission in the inactive state without restoring to the connected state.
The UE adopts eDRX in an inactive state for power saving, and meanwhile, the UE needs to perform small data transmission in the inactive state for periodic small data transmission. The present invention discusses the problems associated with system message updates in such scenarios.
Disclosure of Invention
In order to solve at least a part of the above problems, the present invention provides a method performed by a user equipment and the user equipment, which can obtain a system message change indication in time and obtain an updated system message in time in a RRC inactive state small data transmission process.
According to the invention, a method performed by a user equipment, UE, is proposed, comprising: if the extended discontinuous reception eDRX configured for the UE meets a first configuration requirement, the UE monitors the paging time PO of the UE according to the discontinuous reception DRX cycle to acquire a short message in the RRC inactive state small data transmission process; and when the short message acquired by the UE carries a system message change indication, the UE executes a system message acquisition process from the next system message modification period.
Preferably, the first configuration requirement comprises:
configuring RRC non-activated eDRX parameters; and
the configured RRC inactive eDRX period is greater than the system message modification period.
Preferably, the small data transmission process includes any one of:
starting from RRC connection recovery of small data transmission initiated by the UE to receiving a message of a base station or indicating to end small data transmission;
starting from RRC connection recovery of small data transmission initiated by the UE, and finishing all small data transmission by the UE;
starting from RRC connection recovery of small data transmission initiated by the UE, the UE does not wait for downlink confirmation or response any more;
starting from RRC connection recovery of small data transmission initiated by the UE to releasing configured uplink assignment for small data transmission; and
a process for the UE to send small data and receive small data acknowledgement and response messages.
Preferably, if the eDRX configured for the UE satisfies a first configuration requirement, the UE monitors its PO within a paging time window PTW according to an eDRX cycle in case that an RRC inactive state small data transmission procedure is ended or in case that the UE is in an RRC inactive state but not in a small data transmission procedure.
Preferably, if the eDRX configured for the UE does not satisfy a first configuration requirement, the UE monitors its PO according to the DRX cycle.
Preferably, in a case that the UE is provided with a common search space containing a paging search space, a search space system information block 1 and a search space other system information configuration on an active partial bandwidth BWP, if the eDRX configured for the UE satisfies a first configuration requirement, the UE monitors at least once an arbitrary PO per system message modification period to acquire a system message change indication or a short message during RRC inactive state small data transmission.
Preferably, if the eDRX configured for the UE satisfies a first configuration requirement, the UE monitors at least once any PO in each system message modification period to acquire a system message change indication or a short message in an RRC inactive state small data transmission process.
Preferably, if the UE receives a given system message change indication sent by the base station in the RRC inactive state small data transmission process, the procedure of acquiring the system message is executed from the next system message modification period.
Preferably, the given system message change indication comprises any one of:
a new MAC CE as a system message change MAC control element;
one or more bits in the new MAC CE;
one or more newly added bits in the existing MAC CE;
one or more bits in the new downlink control information DCI; and
one or more additional bits in the existing DCI.
Further, according to the present invention, there is provided a user equipment comprising: a processor; and a memory storing instructions; wherein the instructions, when executed by the processor, perform the method described above.
According to the invention, the system message change indication can be obtained in time and the updated system message can be obtained in time in the process of transmitting the small data in the RRC inactive state.
Drawings
Fig. 1 is a flowchart illustrating a method performed by a user equipment according to embodiment 1 of the present invention.
Fig. 2 is a block diagram showing a user equipment UE according to the present invention.
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.
Some terms related to the present invention are described below, and specific meanings of the terms are described in the latest standard specification of 3GPP, such as TS38.300, TS38.331, TS36.300, TS36.331, and the like. Unless otherwise indicated, all terms referred to in the present invention have the following meanings.
UE: user Equipment
NR: new Radio New generation wireless technology
And MAC: medium Access Control multimedia Access Control
MAC CE: MAC control element
RRM: radio Resource Management
RRC: radio Resource Control
RRC _ CONNECTED: RRC connected state
RRC _ INACTIVE: RRC inactive state
RRC _ IDLE: RRC idle state
RAN: radio Access Network, Radio Access stratum
PDCCH: physical downlink control channel, Physical downlink control channel
PBCH: physical broadcast channel, Physical broadcast channel
And (3) SDT: small Data Transmission
eDRX: extended DRX Extended discontinuous reception
PO: paging interference Paging time
BWP: bandwidth Part Bandwidth
SFN: system Frame Number
H-SFN: hyper SFN Hyper frame number
PTW: paging Time Window
PDU: protocol Data Unit
DCI: downlink control information
C-RNTI: cell radio network temporary identifier
P-RNTI: paging RNTI Paging radio network temporary identifier
PDCCH: physical Downlink Control Channel
In the invention, a network, a base station and a RAN can be used interchangeably, and the network can be a long term evolution LET network, a New radio access technology (New RAT, NR) network, an enhanced long term evolution eLTE network or other networks defined in subsequent evolution versions of 3 GPP.
In the present invention, the user equipment UE may refer to the NR device with reduced capability described in the background technology, and may also refer to other types of NR devices or LTE devices.
Hereinafter, a description will be given of the related art of the present invention.
The system message modification period in NR is a periodic time, and includes several SFNs, which are configured by system messages. If the base station wants to change the system message, the base station can instruct the UE to change the system message in a certain modification period, and starts to broadcast the changed system message in the next modification period. The system Message change indication is contained in a Short Message, which can be delivered at each PO. The Short Message is some fields in the DCI format 1_0 for indicating system Message related information, scrambled with the P-RNTI and transmitted on the PDCCH. In the RRC _ IDLE or RRC _ INACTIVE state, the UE monitors its own PO in each DRX cycle to obtain a system message change indication, where the UE's own PO is a subset of all POs calculated according to the UE _ ID. In the RRC _ CONNECTED state, if the UE is provided with a common search space containing pagengsearchspace, searchSpaceSIB1 and searchspaceother systemlnformation configuration on the active BWP, the UE listens to any PO at least once per modification period to obtain a system message change indication. If the UE receives the Short Message carrying the system Message change indication, the UE starts to apply the process of acquiring the system Message at the next modification period to acquire the updated system Message.
A UE in RRC _ IDLE in LTE may be configured with eDRX, i.e. longer discontinuous reception, thereby saving power consumption. For the UE configured with the eDRX period, updating the system message according to the eDRX system message acquisition period. The eDRX system message acquisition cycle is a number of H-SFN and the cycle boundary is a fixed H-SFN number. The UE configured with the eDRX cycle can be configured with a PTW of the cycle at the same time, where the PTW is a paging monitoring time in the eDRX cycle, and in each eDRX cycle, the UE only needs to monitor PO within the PTW. If the system message is changed in one eDRX system message acquisition cycle, the base station may carry an eDRX system message change indication in the paging message or in the DCI. If the eDRX period of the UE is longer than the system message modification period, the UE acquires an eDRX system message change instruction by monitoring PO, and if the instruction is received, the UE acquires the updated system message by applying the process of acquiring the system message at the beginning of the next eDRX system message acquisition period. In order to avoid access failure caused by using an unrefreshed system message, if an eDRX cycle of the UE is longer than a system message modification cycle and at least one system message modification cycle boundary passes since the last verification of the validity of the system message by the UE, the UE needs to verify the validity of the system message before establishing or resuming the RRC connection, and if the system message stored by the UE is invalid, a system message acquisition procedure is executed.
After introducing RRC _ INACTIVE state eDRX in NR, one possibility is to continue using the system message update handling mechanism in RRC _ IDLE state eDRX in LTE, which is described above.
According to the reduced capability NR device study, the reduced capability NR device may perform small data transmission in RRC _ INACTIVE state with RRC _ INACTIVE eDRX configured. When the UE is in the RRC _ INACTIVE state, an upper layer of the UE, e.g., a non-access stratum, may request the UE to resume the RRC connection. If the UE supports and decides to use the small data transmission mode, the UE may send a MAC PDU in the configured uplink assignment or random access procedure for small data transmission, where the MAC PDU carries the RRC connection recovery request and the user data. Such an RRC connection recovery procedure may be referred to as an RRC connection recovery procedure for small data transmission (or as an RRC connection recovery procedure triggered by small data transmission). After the RRC connection recovery procedure triggered by the small data transmission, if the UE has more small data to send, the UE may send the subsequent small data on the dynamically acquired resources or the configured uplink assignment for the small data transmission without entering the connected state.
In the small data transmission process under the RRC _ INACTIVE, a system message change may occur, and if the UE verifies the validity of the system message only before the RRC connection initiating the small data transmission is restored to trigger possible system message acquisition, a system message change indication may not be obtained in time according to a system message update mechanism of eDRX in the small data transmission process, and the updated system message may not be obtained in time. This may affect the small data transmission, especially in the scenario where there is more small data transmission after the UE sends the first small data.
Hereinafter, several embodiments of the present invention for the above-described problems are described in detail.
Example 1
Fig. 1 is a flowchart illustrating a method performed by a user equipment according to embodiment 1 of the present invention.
As shown in fig. 1, in step 101, if the configuration of eDRX meets the requirement, the UE monitors its PO according to the DRX cycle to acquire a Short Message (sms) during the RRC _ INACTIVE state small data transmission process.
The configuration condition of eDRX satisfies the requirement, and may include but is not limited to one of the following possibilities:
1) configuring RRC _ INACTIVE eDRX parameters (e.g., eDRX cycle, offset, etc.);
2) the configured RRC _ INACTIVE eDRX period is greater than the system message modification period.
The small data transmission process may include, but is not limited to, one of the following possibilities:
1) starting RRC connection recovery of small data transmission initiated by UE, and receiving a message of a base station or indicating to end small data transmission;
2) starting RRC connection recovery of small data transmission initiated by UE and finishing all small data transmission by the UE;
3) starting from RRC connection recovery of small data transmission initiated by UE, the UE does not wait for downlink confirmation or response any more;
4) starting from RRC connection recovery of small data transmission initiated by UE to releasing configured uplink assignment for small data transmission;
5) procedure for UE to send small data and receive small data acknowledgement and response message.
In step 103, when the Short Message acquired by the UE carries a system Message change indication, that is, a first indication of system Message change, the UE executes a process of acquiring a system Message at a starting position of a next system Message modification period.
Alternatively, if the configuration of eDRX satisfies the requirement (as described above), the UE ends the small data transmission procedure in the RRC _ INACTIVE state, or the UE is in the RRC _ INACTIVE state but is not in the small data transmission procedure, and then the UE monitors its PO in the PTW according to the eDRX cycle. If the UE acquires the Short Message and carries an eDRX system Message change instruction (a second system Message change instruction), the UE executes a system Message acquiring process at the boundary of the next eDRX system Message acquiring cycle.
Alternatively, if the configuration of eDRX cannot meet the requirement (i.e. eDRX is not configured, or eDRX cycle is not longer than modification cycle, or only DRX is configured), the UE monitors its PO according to DRX cycle. And if the UE acquires the Short Message and carries a system Message change instruction, the UE executes the process of acquiring the system Message at the starting position of the next system Message modification period.
Example 2
Alternatively, if the configuration of eDRX satisfies the requirement, during the small data transmission process in the RRC _ INACTIVE state, if the UE is provided with a common search space that contains a pagengsearchspace, searchspace sib1 and searchspaceother system information configuration on the activated BWP, the UE monitors at least once any PO to obtain the system Message change indication (or obtain the Short Message) in each system Message modification period, which is the same as the process of obtaining the system Message change indication (or obtain the Short Message) in the RRC _ CONNECTED state.
The possibility that the configuration of eDRX satisfies the requirement is as described in embodiment 1.
Wherein, the small data transmission process may include but is not limited to the case as described in embodiment 1.
And when the Short Message acquired by the UE carries a system Message change indication, namely a first indication of system Message change, the UE executes a process of acquiring the system Message at the starting position of the next system Message modification period.
Optionally, if the configuration of eDRX meets the requirement, the UE monitors at least once any PO in each system Message modification period to obtain the system Message change indication (or obtain the Short Message) during the small data transmission process in the RRC _ INACTIVE state, which is the same as the process of obtaining the system Message change indication (or obtain the Short Message) in the RRC _ CONNECTED state.
Alternatively, if the configuration of eDRX cannot meet the requirement (i.e. eDRX is not configured, or eDRX cycle is not longer than the modification cycle, or only DRX is configured), during the small data transmission in RRC _ INACTIVE state, if the UE is provided with a common search space containing a paging searchspace, searchspib 1, and searchspaceother information configuration on an active BWP, the UE monitors at least once any PO to obtain the system Message change indication (or obtain Short Message) in each system Message modification cycle, i.e. the same process as the process of obtaining the system Message change indication (or obtain Short Message) in RRC _ CONNECTED state.
Optionally, in the small data transmission process in the RRC _ INACTIVE state, if the UE is provided with a common search space that contains a paging searchspace, a searchSpaceSIB1 and a searchspaceother information configuration on an active BWP, the UE listens to any PO at least once to obtain a system Message change indication (or obtain a Short Message) in each system Message modification period, that is, the same process as the process of obtaining the system Message change indication (or obtain the Short Message) in the RRC _ CONNECTED state.
Optionally, during the small data transmission process in the RRC _ INACTIVE state, the UE monitors at least once an arbitrary PO to obtain the system Message change indication (or obtain the Short Message) in each system Message modification period, that is, the same process as the process of obtaining the system Message change indication (or obtain the Short Message) in the RRC _ CONNECTED state is performed.
Optionally, if the configuration of eDRX cannot meet the requirement (i.e. eDRX is not configured, or eDRX cycle is not longer than the modification cycle, or only DRX is configured), the UE monitors at least one arbitrary PO to obtain the system Message change indication (or obtain the Short Message) in each system Message modification cycle during the small data transmission in the RRC _ INACTIVE state, i.e. the same process as the process of obtaining the system Message change indication (or obtain the Short Message) in the RRC _ CONNECTED state.
Example 3
In the small data transmission process of the UE in the RRC _ INACTIVE state (the possibility of the small data transmission process is described in embodiment 1), the UE receives a third indication for changing the system message sent by the base station, and executes the process of acquiring the system message in the next system message modification period.
Wherein the third indication of the system message change may include one of the following possibilities:
1) the system message change third indication is a new MAC CE, e.g., the system message change MAC CE;
2) the system message change third indication is one or a plurality of bits in a newly added MAC CE (for example, the system message change MAC CE);
3) the system message changes the third indication into one or a plurality of newly added bits in the existing MAC CE;
4) the system message changes the third indication to be one or several bits in one new DCI;
5) the system message changes the third indication to be one or more newly added bits in an existing DCI.
The MAC CE or DCI as above may be scrambled with the C-RNTI.
Example 4
In the small data transmission process of the UE in the RRC _ INACTIVE state (the possibility of the small data transmission process is described in embodiment 1), the process of the UE monitoring the PDCCH is the same as the process of the UE configured with DRX monitoring the PDCCH in the RRC _ CONNECTED state.
Fig. 2 is a block diagram schematically illustrating a user equipment UE according to the present invention. As shown in fig. 2, the user equipment UE200 includes a processor 201 and a memory 202. The processor 201 may include, for example, a microprocessor, a microcontroller, an embedded processor, or the like. The memory 202 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 202 has stored thereon program instructions. Which when executed by the processor 201 may perform the above-described method performed by the user equipment as described in detail in the present invention.
The program running on the apparatus according to the present invention may be a program that causes a computer to realize the functions of the embodiments of the present invention by controlling a Central Processing Unit (CPU). The program or information processed by the program may be temporarily stored in a volatile memory (such as a random access memory RAM), a Hard Disk Drive (HDD), a nonvolatile memory (such as a flash memory), or other memory system.
A program for implementing the functions of the embodiments of the present invention may be recorded on a computer-readable recording medium. The corresponding functions can be realized by causing a computer system to read the programs recorded on the recording medium and execute the programs. The term "computer system" as used herein may be a computer system embedded in the device and may include an operating system or hardware (e.g., peripheral devices). The "computer-readable recording medium" may be a semiconductor recording medium, an optical recording medium, a magnetic recording medium, a recording medium that stores a program for short-term dynamics, or any other recording medium that is readable by a computer.
Various features or functional blocks of the devices used in the above-described embodiments may be implemented or performed by circuitry (e.g., a single or multiple chip integrated circuits). Circuitry designed to perform the functions described herein may include a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA), or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof. A general purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. The circuit may be a digital circuit or an analog circuit. Where new integrated circuit technologies have emerged as a replacement for existing integrated circuits due to advances in semiconductor technology, one or more embodiments of the present invention may also be implemented using these new integrated circuit technologies.
Further, the present invention is not limited to the above-described embodiments. While various examples of the embodiments have been described, the present invention is not limited thereto. Fixed or non-mobile electronic devices installed indoors or outdoors may be used as terminal devices or communication devices, such as AV devices, kitchen devices, cleaning devices, air conditioners, office equipment, vending machines, and other home appliances.
As above, the embodiments of the present invention have been described in detail with reference to the accompanying drawings. However, the specific configuration is not limited to the above embodiment, and the present invention includes any design modification without departing from the gist of the present invention. In addition, the present invention can be variously modified within the scope of the claims, and embodiments obtained by appropriately combining the technical means disclosed in the different embodiments are also included in the technical scope of the present invention. Further, components having the same effects described in the above embodiments may be substituted for each other.
Claims (10)
1. A method performed by a User Equipment (UE), comprising:
if the extended discontinuous reception eDRX configured for the UE meets a first configuration requirement, the UE monitors the paging time PO of the UE according to the discontinuous reception DRX cycle to acquire a short message in the RRC inactive state small data transmission process; and
and when the short message acquired by the UE carries a system message change instruction, the UE executes a system message acquisition process from the next system message modification period.
2. The method of claim 1, wherein,
the first configuration requirement includes:
configuring RRC non-activated eDRX parameters; and
the configured RRC inactive eDRX period is greater than the system message modification period.
3. The method of claim 1, wherein,
the small data transmission process includes any one of:
starting from RRC connection recovery of small data transmission initiated by the UE to receiving a message of a base station or indicating to end small data transmission;
starting from RRC connection recovery of small data transmission initiated by the UE, and finishing all small data transmission by the UE;
starting from RRC connection recovery of small data transmission initiated by the UE, the UE does not wait for downlink confirmation or response any more;
starting from RRC connection recovery of small data transmission initiated by the UE to releasing configured uplink assignment for small data transmission; and
a process for the UE to send small data and receive small data acknowledgement and response messages.
4. The method of claim 1, wherein,
if the eDRX configured for the UE meets a first configuration requirement, the UE monitors the PO of the UE in a paging time window PTW according to an eDRX cycle under the condition that an RRC (radio resource control) inactive state small data transmission process is finished or under the condition that the UE is in an RRC inactive state but is not in the small data transmission process.
5. The method of claim 1, wherein,
and if the eDRX configured for the UE does not meet a first configuration requirement, the UE monitors the PO of the UE according to the DRX cycle.
6. The method of claim 1, wherein,
in the case that the UE is provided with a common search space containing a paging search space, a search space system information block 1, and a search space other system information configuration on an active partial bandwidth BWP, if the eDRX configured for the UE satisfies a first configuration requirement, the UE monitors at least once any PO per system message modification period to acquire a system message change indication or a short message during RRC inactive state small data transmission.
7. The method of claim 1, wherein,
and if the eDRX configured for the UE meets a first configuration requirement, the UE monitors any PO at least once in each system message modification period to acquire a system message change indication or a short message in the RRC inactive state small data transmission process.
8. The method of claim 1, wherein,
and if the UE receives a given system message change instruction sent by the base station in the RRC inactive state small data transmission process, executing a system message acquisition process from the next system message modification period.
9. The method of claim 1, wherein,
the given system message change indication comprises any of:
a new MAC CE as a system message change MAC control element;
one or more bits in the new MAC CE;
one or more newly added bits in the existing MAC CE;
one or more bits in the new downlink control information DCI; and
one or more newly added bits in the existing DCI.
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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| CN202110299720.2A CN115119339A (en) | 2021-03-19 | 2021-03-19 | Method performed by user equipment and user equipment |
| PCT/CN2022/081430 WO2022194242A1 (en) | 2021-03-19 | 2022-03-17 | Method executed by user equipment, and user equipment |
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| CN115696645A (en) * | 2022-09-27 | 2023-02-03 | 成都鼎桥通信技术有限公司 | Triggering method, device and equipment of terminal equipment and storage medium |
| CN118042649A (en) * | 2022-11-04 | 2024-05-14 | 维沃移动通信有限公司 | Data receiving and information transmitting method and device, terminal and network side equipment |
| WO2024168839A1 (en) * | 2023-02-17 | 2024-08-22 | Apple Inc. | Enhancing small data transmissions for reduced capability user equipment |
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| CN102595573A (en) * | 2012-02-02 | 2012-07-18 | 电信科学技术研究院 | Method, system and equipment for configuring DRX parameters |
| CN102769842B (en) * | 2012-07-13 | 2016-03-16 | 中国联合网络通信集团有限公司 | Small data quantity service optimization method in LTE network and network equipment |
| KR20140094128A (en) * | 2013-01-21 | 2014-07-30 | 삼성전자주식회사 | Method and apparatus for data transmission in connection for small data transmission |
| GB2512393A (en) * | 2013-03-28 | 2014-10-01 | Nec Corp | Apparatus and methods for small data transmission |
| US9883480B2 (en) * | 2014-07-11 | 2018-01-30 | Apple Inc. | Enhanced paging schemes and connected-state DRX |
| US10932225B2 (en) * | 2017-08-28 | 2021-02-23 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Method for paging, access network device, and terminal device |
| KR20210005513A (en) * | 2019-07-03 | 2021-01-14 | 주식회사 케이티 | Methods for controlling overload of small data and apparatuses thereof |
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