CN116867120A - Service control method and system for small data transmission - Google Patents

Service control method and system for small data transmission Download PDF

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Publication number
CN116867120A
CN116867120A CN202310895718.0A CN202310895718A CN116867120A CN 116867120 A CN116867120 A CN 116867120A CN 202310895718 A CN202310895718 A CN 202310895718A CN 116867120 A CN116867120 A CN 116867120A
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CN
China
Prior art keywords
terminal
data transmission
small data
information
service
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Pending
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CN202310895718.0A
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Chinese (zh)
Inventor
赵连鹏
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Chengdu Xinjixun Communication Technology Co ltd
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Chengdu Xinjixun Communication Technology Co ltd
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Priority to CN202310895718.0A priority Critical patent/CN116867120A/en
Publication of CN116867120A publication Critical patent/CN116867120A/en
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/06—Transport layer protocols, e.g. TCP [Transport Control Protocol] over wireless
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/046—Wireless resource allocation based on the type of the allocated resource the resource being in the space domain, e.g. beams
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Abstract

The invention provides a business control method and a system for small data transmission, wherein when a terminal initiates small data transmission based on pre-configured resources, business transmission information in the data transmission process is collected and stored locally, and then reported to a network end; the network end analyzes the service transmission information, optimizes the resource configuration information of the small data transmission according to the analysis result, and then transmits the information to the terminal. The network end optimizes the resource allocation according to the related service transmission information, and the terminal uses the optimized resource allocation information to transmit small data next time, so that the resource waste, the power loss and the long data scheduling delay caused by the fact that the configured CG-SDT scheduling resource is inconsistent with the actual service condition of the user equipment are avoided.

Description

Service control method and system for small data transmission
Technical Field
The present invention relates to the field of wireless communications technologies, and in particular, to a method and a system for controlling a service for transmitting small data.
Background
3GPP (3 rd Generation Partnership Project, third generation partnership project) Rl-17 (5 g Release 17) proposes that the terminal UE can perform data transmission (SDT, small Data Transmission, i.e. small data transmission) of small data amount in rrc_inactive state (Radio Resource Control, radio resource control INACTIVE state), and before the terminal initiates the SDT small data transmission procedure, the base station configures resources for the terminal in advance. SDT is divided into RA-SDT based on small data transmission of random access and CG-SDT based on small data transmission of preconfigured resource according to resource use and scheduling condition.
For the RA-SDT transmission form, the resources are configured to the terminal by the network end through the system information. For CG-SDT transmission, when the network configures the terminal to enter rrc_inactive state through RRC signaling, the network configures PUSCH channel Type 1 configuration grant resources used for small data transmission to the terminal, such as a scheduling period, TBS (Transport Block Size ), and the like. The 5G supports the design of multiple SSB (synchronization signal and PBCH Block) beams in a cell, in order to enable a terminal to select an SSB beam with better signal when initiating a CG-SDT procedure, CG-SDT resources are associated with a set of SSBs through RRC signaling configuration, and at the same time, one SSB-RSRP threshold for beam selection is configured. And the terminal selects an SSB wave beam with the measured RSRP higher than the threshold value in the process of initiating CG-SDT initially and when using CG-SDT resources to carry out uplink data transmission subsequently, then selects CG-SDT resources associated with the SSB wave beam, and sends a small data packet of the terminal on a PUSCH. And if the SSB beam meeting the requirement is not selected, small data transmission is carried out through random access.
The parameters SDT-MAC-PHY-CG-Config-r17 related to CG-SDT are all currently configured by a base station to a terminal in RRC Release, and no prior information about the service characteristics of the terminal exists during the configuration. The configured parameters may have low matching degree with the service condition actually initiated by the user, for example, the configured PUSCH type 1 has a short scheduling period, but the average time that RB (Radio bearer) service data actually available for SDT transmission arrives is long, so that a terminal can only send useless padding packets to a network end at many scheduling moments, and a certain resource and power waste is caused. For example, the configured TBS is large, but the service packet to be sent at each scheduling time is small, which also causes a certain resource waste. In addition, the terminal can only select resources in the configured SSB beams, but the strongest SSB beam of the terminal may not be necessarily in the SSB beam group configured by the network at the scheduling time, so that the data is not transmitted in the strongest beam direction.
Disclosure of Invention
Based on the above problems, the invention provides a service control method and a system for small data transmission, which aim to solve the technical problems of resource waste, power loss, large data scheduling delay and the like caused by inconsistent configured CG-SDT scheduling resources and actual terminal service conditions.
A business control method for small data transmission includes:
step A1, a network end sends resource allocation information of small data transmission to a terminal;
a2, when the terminal initiates small data transmission based on the pre-configured resource, sending an uplink data packet according to the resource configuration information, and collecting service transmission information in the data transmission process and storing the service transmission information in a local area;
step A3, the terminal reports the service transmission information stored in the local to the network terminal;
step A4, the network end analyzes the service transmission information to obtain an analysis result;
step A5, the network end optimizes the resource allocation information of the small data transmission according to the analysis result;
and step A6, the network side transmits the optimized resource configuration information to the terminal.
Further, in step A2, the collected traffic transmission information includes at least one of the following information: index of strongest SSB beam, signal quality measurement of strongest SSB beam, average time interval of arrival of data packet on each RB for CG-SDT transmission, average size of arrival data packet, number of scheduling of effective data, number of scheduling of invalid data, and number of times of backoff small data transmission based on random access.
Further, the signal quality measurement of the strongest SSB beam includes at least one of a reference signal received power, a reference signal received quality, and an indication of the strength of the received signal.
Further, in step A3, the terminal sends the service transmission information stored locally to the network end in a periodic reporting manner.
Further, in step A3, the terminal sends the service transmission information stored locally to the network end in a manner of event reporting.
Further, step A3 includes:
step A31, the network end sends a user information request message reporting the service transmission information to the terminal;
and step A32, after receiving the user information request message, the terminal reports the service transmission information stored in the local area to the network.
Further, optionally, before step a31, the method may further include:
step A30, the terminal sends a notification message about collecting service transmission information to the network terminal;
step a31 includes: after receiving the notification message, the network end sends a user information request message for reporting the service transmission information to the terminal.
Further, the resource configuration information includes a scheduling period of small data transmission;
in step A2, the terminal sends an uplink data packet according to the scheduling period, and after each scheduling, collects service transmission information in the scheduling period.
A business control system for small data transmission is used for the business control method for small data transmission, which comprises the following steps:
a network side, configured to perform:
transmitting resource configuration information of small data transmission to a terminal;
a terminal for performing:
when small data transmission based on pre-configured resources is initiated, an uplink data packet is sent according to the resource configuration information, and service transmission information in the data transmission process is collected and stored locally;
and reporting the service transmission information stored locally to the network side.
The network side is further configured to perform:
analyzing the service transmission information to obtain an analysis result;
optimizing the resource configuration information of the small data transmission according to the analysis result;
and transmitting the optimized resource configuration information to the terminal.
The beneficial technical effects of the invention are as follows: the invention provides a service control method and a system for small data transmission, which are characterized in that when a terminal initiates small data transmission based on pre-configured resources, relevant service transmission information in the small data transmission process is collected, a network side optimizes resource configuration according to the relevant service transmission information, the terminal uses the optimized resource configuration information to carry out small data transmission next time, and resource waste, power loss and long data scheduling delay caused by inconsistent CG-SDT scheduling resources and actual terminal service conditions are avoided.
Drawings
Fig. 1-3 are flowcharts of steps of a method for controlling traffic for small data transmission according to the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
The invention is further described below with reference to the drawings and specific examples, which are not intended to be limiting.
Referring to fig. 1, the present invention provides a service control method for small data transmission, including:
step A1, a network end sends resource allocation information of small data transmission to a terminal; the resource allocation information relates to the resource allocation information when the CG-SDT transmission mode is adopted for small data transmission based on the pre-allocated resource;
a2, when the terminal initiates small data transmission based on the pre-configured resource, sending an uplink data packet according to the resource configuration information, and collecting service transmission information in the data transmission process and storing the service transmission information in a local area;
step A3, the terminal reports the service transmission information stored in the local to the network terminal;
step A4, the network end analyzes the service transmission information to obtain an analysis result;
step A5, the network end optimizes the resource allocation information of the small data transmission according to the analysis result;
and step A6, the network side transmits the optimized resource configuration information to the terminal.
The invention provides a feedback mechanism and a feedback flow, when a terminal initiates small data transmission based on pre-configured resources, relevant service transmission information in the small data transmission process is collected and fed back to a network end, the network end optimizes resource configuration according to the relevant service transmission information, and the terminal uses the optimized resource configuration information to carry out small data transmission next time, so that resource waste, power consumption and long data scheduling delay caused by inconsistent actual conditions of configured CG-SDT scheduling resources and terminal services are avoided. The initial purpose of SDT introduction is to reduce resource and power waste caused by irregular, high-frequency small data volume data uploading, so the invention has important significance for effective use of the whole cell resource and power consumption of the terminal in accordance with the parameter configuration of the user data transmission characteristics.
Specifically, in step A1, the network configures the terminal to enter an inactive state through an RRC release message (radio resource control release message), and sends CG-SDT related resource configuration information to the terminal in the RRC release message.
Specifically, in step A2, if the terminal has data to be transmitted, firstly, the terminal determines the SDT start condition, decides whether to start the small data transmission SDT according to the determination result, and decides whether to start the RA-SDT or the CG-SDT. And if the terminal judges that the condition for starting the CG-SDT is met, the CG-SDT is started.
Further, in step A2, the collected traffic transmission information includes, but is not limited to, at least one of the following information: the time index (SSB index) of the strongest SSB beam, the signal quality measurement of the strongest SSB beam, the average time interval of arrival of the data packet on each RB performing CG-SDT transmission, the average size of the arriving data packet, the number of times of scheduling of valid data, the number of times of scheduling of invalid data, the number of times of backoff random access based small data transmission, and the like.
In the invention, the effective data refers to the data which does have the RB service to be transmitted, the ineffective data refers to the data packet which does not have the RB service to be transmitted currently, and only a few useless data padding packets can be transmitted to the network. The packet arrival interval refers to the interval between the current service packet and the last service packet, and the size refers to the effective length of the arrival packet.
Further, the signal quality measurement of the strongest SSB beam includes at least one of a reference signal received power, a reference signal received quality, and an indication of the strength of the received signal.
Reference signal received power, reference Signal Receiving Power, RSRP.
The reference signal reception quality, reference Signal Receiving Quality, RSRQ, is the ratio of RSRP to RSSI.
The strength indication of the received signal, received Signal Strength Indicator, RSSI.
Specifically, in step A3, if CG-SDT related traffic transmission information is locally stored, it is reported.
In step A3, the terminal sends the service transmission information stored locally to the network in a periodic reporting manner, where the reporting period is configured by the network.
After the CG-SDT transmission is successfully started, a period timer is started. After the period timer is overtime, the terminal sends the service transmission information stored in the local to the network end in a period reporting mode, and the transmission period is specifically larger than the scheduling period of CG-SDT.
The terminal does not wait for the inquiry information of the network terminal, and directly and periodically reports the service transmission information stored in the local according to the reporting period configured by the network terminal, that is, the terminal firstly stores the service transmission information collected in each period, and when the period arrives, the service transmission information collected in the period is sent to the network terminal through a special message.
In a preferred embodiment of the present invention, in step A3, the terminal sends the service transmission information stored locally to the network end by means of event reporting.
And when the current situation meets the conditions (events) specified by the protocol, the collected service transmission information is sent to the network side. The event such as RRC setup, RRC resume, etc. reports the stored service transmission information to the network in a corresponding completion message such as RRC Resume Complete or RRC Setup Complete, etc., or transmits the service transmission information to the network through a dedicated message before the terminal transmits the completion message such as RRC Resume Complete or RRC Setup Complete.
Further, the dedicated message may be an RRC message that is newly added, or may be a set of cell parameters that are newly added at RRCResume Complete or RRC Setup Complete.
Further, in step A3, after the service transmission information stored in the local is successfully reported, the variable value stored in the local is cleared, and step A2 is restarted to perform the collection and statistics of the next round.
As a preferred embodiment of the present invention, referring to fig. 2, further, step A3 includes:
step A31, the network end sends a user information request message reporting the service transmission information to the terminal;
and step A32, after receiving the user information request message, the terminal reports the service transmission information stored in the local area to the network.
As a preferred embodiment of the present invention, before step a31, referring to fig. 3, it may further include:
step A30, the terminal sends a notification message about collecting service transmission information to the network terminal;
step a31 includes: after receiving the notification message, the network end sends a user information request message for reporting the service transmission information to the terminal.
In the invention, the terminal can send no notification message about collecting service transmission information, and the network end directly sends the request message to enable the terminal to upload the stored service transmission information. The terminal may also send a notification message about the collected service transmission information, and the network end receives the notification message and issues request information. Both schemes are possible.
In step a30, the terminal collects the service transmission information to a certain extent, for example, accumulates to a period or after the completion of the RRC establishment and RRC recovery, and transmits a notification message. Specified events such as RRC setup reestablish, RRC resume, and RRC Reconfiguration reconfiguration event. Specifically, in step a30, the terminal reports a notification message related to the local service transmission information to the network in a completion message such as the transmission RRC Resume Complete or RRC Setup Complete.
Further, the resource configuration information includes a scheduling period of small data transmission;
in step A2, the terminal sends an uplink data packet according to the scheduling period, and after each scheduling, collects service transmission information in the scheduling period.
When the terminal initiates CG-SDT, according to the resource configuration information, whether actual data is to be sent or useless padding packets are sent currently or not, the terminal sends uplink data packets at the period scheduling moment.
Specifically, in step A6, the network configures the terminal to enter an inactive state through an RRC release message (radio resource control release message), and sends CG-SDT related optimized resource configuration information to the terminal in the RRC release message, so that the terminal can use the CG-SDT when initiating the CG-SDT next time.
Specifically, in step A6, when the terminal exits from SDT transmission, the network sends the optimized resource configuration information to the terminal through an RRC release message.
The resource configuration information comprises configured CG scheduling period periodicity, usable MCS and TBS; the size of the CG scheduling period is timer_a, if the interval between data arrival is smaller than timer_a, a certain data backlog and scheduling delay are caused, and if the interval between data arrival is greater than timer_a, scheduling resource waste and terminal power consumption are caused. For example, if the configured MCS is too large, but the actual channel condition of the terminal is poor, a certain error code and retransmission may be caused. Therefore, in step A5, the parameters related to SDT-MAC-PHY-CG-Config-r17 are reconfigured according to the collected service transmission information, and in step A6, when the network side configures the terminal to enter the inactive state, the optimized parameters related to CG-SDT-MAC-PHY-CG-Config-r 17 are configured to the terminal in the RRC release message, and the terminal uses the configured parameters to perform CG-SDT small data transmission in a subsequent CG-SDT starting process. And reconfiguring part of parameters in the SDT-MAC-PHY-CG-Config-r17 to fit the service and channel conditions of the current terminal, so that retransmission and error codes are reduced, user service is scheduled with the most suitable MCS\TBS and scheduling period, and the power consumption of the user terminal is saved. I.e. the optimization of the resource configuration information comprises optimization of resources such as modulation period, MCS (Modulation and Coding Scheme, modulation and coding strategy) and TBS.
The invention also provides a service control system for small data transmission, which is used for executing the service control method for small data transmission, and comprises the following steps:
a network side, configured to perform:
transmitting resource configuration information of small data transmission to a terminal;
a terminal for performing:
when small data transmission based on pre-configured resources is initiated, an uplink data packet is sent according to the resource configuration information, and service transmission information in the data transmission process is collected and stored locally;
and reporting the service transmission information stored locally to the network side.
The network side is further configured to perform:
analyzing the service transmission information to obtain an analysis result;
optimizing the resource configuration information of the small data transmission according to the analysis result;
and transmitting the optimized resource configuration information to the terminal.
The network side can communicate with the terminal, the equipment of the network side comprises but not limited to a base station in a communication system such as a 4G base station, a 5G base station, a 6G base station and the like, and the terminal comprises but not limited to a mobile phone, a tablet computer, a wearable device, a sensor, an Internet of things device and other communication devices.
The foregoing is merely illustrative of the preferred embodiments of the present invention and is not intended to limit the embodiments and scope of the present invention, and it should be appreciated by those skilled in the art that equivalent substitutions and obvious variations may be made using the description and illustrations of the present invention, and are intended to be included in the scope of the present invention.

Claims (9)

1. A traffic control method for small data transmission, comprising:
step A1, a network end sends resource allocation information of small data transmission to a terminal;
a2, when the terminal initiates small data transmission based on the pre-configured resource, sending an uplink data packet according to the resource configuration information, and collecting service transmission information in the data transmission process and storing the service transmission information in a local area;
step A3, the terminal reports the service transmission information stored locally to the network terminal;
step A4, the network end analyzes the service transmission information to obtain an analysis result;
step A5, the network end optimizes the resource configuration information of the small data transmission according to the analysis result;
and step A6, the network side transmits the optimized resource configuration information to the terminal.
2. The traffic control method for small data transmission according to claim 1, wherein in said step A2, said traffic transmission information collected includes at least one of the following information: index of strongest SSB beam, signal quality measurement of strongest SSB beam, average time interval of arrival of data packet on each RB for CG-SDT transmission, average size of arrival data packet, number of scheduling of effective data, number of scheduling of invalid data, and number of times of backoff small data transmission based on random access.
3. The traffic control method for small data transmissions of claim 2 wherein the signal quality measurement for the strongest SSB beam comprises at least one of a reference signal received power, a reference signal received quality, and an indication of the strength of the received signal.
4. The method for controlling small data transmission according to claim 1, wherein in the step A3, the terminal sends the service transmission information stored locally to the network end by means of periodic reporting.
5. The method for controlling small data transmission according to claim 1, wherein in the step A3, the terminal sends the service transmission information stored locally to the network end by means of event reporting.
6. The traffic control method for small data transmission according to claim 1, wherein said step A3 comprises:
step A31, the network end sends a user information request message reporting the service transmission information to the terminal;
and step A32, after receiving the user information request message, the terminal reports the service transmission information stored locally to the network side.
7. The traffic control method for small data transmission according to claim 6, further comprising, before said step a 31:
step A30, the terminal sends a notification message about collecting the service transmission information to the network terminal;
the step a31 includes: and after receiving the notification message, the network end sends a user information request message for reporting the service transmission information to the terminal.
8. The traffic control method for small data transmission according to claim 6, wherein the resource configuration information includes a scheduling period of small data transmission;
in the step A2, the terminal sends an uplink data packet according to the scheduling period, and after each scheduling, collects service transmission information in the scheduling period.
9. A traffic control system for small data transmission, characterized by a traffic control method for performing a small data transmission according to any of claims 1-8, comprising:
a network side, configured to perform:
transmitting resource configuration information of small data transmission to a terminal;
a terminal for performing:
when small data transmission based on pre-configured resources is initiated, an uplink data packet is sent according to the resource configuration information, and service transmission information in the data transmission process is collected and stored locally;
reporting the service transmission information stored locally to the network side;
the network side is further configured to perform:
analyzing the service transmission information to obtain an analysis result;
optimizing the resource configuration information of the small data transmission according to the analysis result;
and transmitting the optimized resource configuration information to the terminal.
CN202310895718.0A 2023-07-20 2023-07-20 Service control method and system for small data transmission Pending CN116867120A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310895718.0A CN116867120A (en) 2023-07-20 2023-07-20 Service control method and system for small data transmission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310895718.0A CN116867120A (en) 2023-07-20 2023-07-20 Service control method and system for small data transmission

Publications (1)

Publication Number Publication Date
CN116867120A true CN116867120A (en) 2023-10-10

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Application Number Title Priority Date Filing Date
CN202310895718.0A Pending CN116867120A (en) 2023-07-20 2023-07-20 Service control method and system for small data transmission

Country Status (1)

Country Link
CN (1) CN116867120A (en)

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