CN108696893B - Uplink data sending method, device, base station and user equipment - Google Patents

Uplink data sending method, device, base station and user equipment Download PDF

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Publication number
CN108696893B
CN108696893B CN201710223121.6A CN201710223121A CN108696893B CN 108696893 B CN108696893 B CN 108696893B CN 201710223121 A CN201710223121 A CN 201710223121A CN 108696893 B CN108696893 B CN 108696893B
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congestion control
random access
uplink data
user equipment
control information
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CN108696893A (en
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艾建勋
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ZTE Corp
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ZTE Corp
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Priority to PCT/CN2018/080317 priority patent/WO2018184476A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0289—Congestion control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access, e.g. scheduled or random access
    • H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access, e.g. scheduled or random access
    • H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
    • H04W74/0833—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure

Abstract

The invention discloses an uplink data sending method, an uplink data sending device, a base station and user equipment, relates to the technical field of communication, and aims to solve the problem that congestion caused by the fact that UE in an inactive state initiates uplink data transmission in the prior art cannot be effectively solved. The method comprises the following steps: sending congestion control information to inactive user equipment through a random access signaling or a system message, wherein the congestion control information is used for indicating the user equipment to carry out congestion control when the user equipment sends uplink data; and carrying out random access on the user equipment according to the congestion control result of the user equipment.

Description

Uplink data sending method, device, base station and user equipment
Technical Field
The present invention relates to the field of communications technologies, and in particular, to an uplink data transmission method, apparatus, base station, and user equipment.
Background
In the 3gpp lte (3 gpp lte,3rd Generation Partnership Project Long Term Evolution) system, a new Radio Resource Control (RRC) state, hereinafter referred to as RRC Inactive state, is introduced. For the UE in this state, context information of an Access Stratum (AS) of the UE is maintained in both the access network element and the UE, and the AS context information includes configuration information of SRBs and DRBs of the UE, configuration information of user plane protocol layers (PDCP and RLC), and (possible) state information. Meanwhile, the UE behaves like a UE in an RRC IDLE state, i.e., the UE in this state is not allocated dedicated radio resources on the radio interface.
Currently, the industry proposes a requirement for sending uplink data by an inactive UE, that is, a requirement for sending uplink data by an inactive UE without entering an RRC connected state. However, in this process, when the UE in the inactive state initiates uplink data transmission and encounters a congestion condition, the related art has not yet provided an effective solution.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide an uplink data transmission method, apparatus, base station and user equipment, so as to solve the problem that congestion caused by uplink data transmission initiated by a UE in an inactive state in the prior art cannot be effectively solved.
In one aspect, the present invention provides an uplink data transmitting method, including: sending congestion control information to inactive user equipment through a random access signaling or a system message, wherein the congestion control information is used for indicating the user equipment to carry out congestion control when sending uplink data; and carrying out random access on the user equipment according to the congestion control result of the user equipment.
Optionally, the congestion control information includes at least one of a congestion control indication parameter, a congestion control probability factor, and a congestion control duration.
Optionally, the congestion control information is the congestion control indication parameter, and the corresponding congestion control indicates that the random access process for inactive uplink data transmission is stopped when the user equipment needs to perform congestion control when transmitting uplink data; the congestion control information is the congestion control probability factor, the corresponding congestion control is the probability of controlling the user equipment to perform congestion control, and the random access process for inactive uplink data transmission is stopped when the user equipment needs to perform congestion control when transmitting uplink data according to the congestion control probability factor; the congestion control information is the congestion control duration, and the corresponding congestion control is the duration for controlling the ue to stop the random access process for inactive uplink data transmission.
Optionally, the value range of the congestion control probability factor is (a, b), when the ue performs congestion control check, the ue randomly selects a random number c between a and b, compares the random number c with the congestion control factor, and determines whether to perform congestion control according to a comparison result, where a, b, and c are any real numbers.
Optionally, sending the congestion control information to the user equipment through the random access signaling includes: and sending the congestion control information to all the user equipment in the inactive state or the designated user equipment in the inactive state through the random access signaling.
Optionally, the sending the congestion control information to all the user equipments in the inactive state or the designated user equipment in the inactive state through the random access signaling includes: and sending the message 2MSG2 once or repeatedly within the time window of the random access response, or scheduling and sending the message 2MSG2 once in each available downlink wireless subframe within the time window of the random access response.
Optionally, the sending the congestion control information to all the user equipments in the inactive state or the designated user equipment in the inactive state through the random access signaling includes: carrying the congestion control information in a media access layer sub-header MAC sub-header of a message 2MSG2 of the random access signaling, and sending the congestion control information to all user equipment in an inactive state or specified user equipment in the inactive state; and/or carrying the congestion control information in a random access response message of the message 2MSG2 of the random access signaling, and sending the congestion control information to all user equipment in an inactive state or specified user equipment in the inactive state.
Optionally, the designated user equipment is determined by a preset preamble sequence identifier or a preset spreading code in the random access signaling.
Optionally, the sending the congestion control information to all the user equipments in the inactive state or the designated user equipment in the inactive state through the random access signaling includes: scheduling MSG2 by using RNTI corresponding to the preamble sequence identifier or PDCCH DCI scrambled by RNTI corresponding to the spread spectrum code, wherein the MSG2 comprises a response message aiming at one preamble sequence or spread spectrum code; or scheduling MSG2 by using PDCCH DCI scrambled by one common RNTI, wherein the MSG2 comprises response messages aiming at a plurality of preamble sequence identifications or spreading codes, and each response message is identified by a corresponding preamble sequence or spreading code.
Optionally, the initiating of the random access process for inactive sending of uplink data is stopped when the number of times of contention resolution failure of the random access process initiated by the user equipment exceeds a preset number threshold.
Optionally, the preamble sequence used in the random access signaling is from a dedicated preamble resource pool in the inactive state, or from a common preamble resource pool in the active state and the inactive state.
In another aspect, the present invention further provides an uplink data transmitting method, including: receiving congestion control information sent by a base station through random access signaling or system information; and carrying out congestion control on the uplink data transmission according to the congestion control information.
Optionally, the congestion control information includes at least one of a congestion control indication parameter, a congestion control probability factor, and a congestion control duration.
Optionally, the performing congestion control on uplink data transmission according to the congestion control information includes: determining whether the uplink data needs to be subjected to congestion control or not according to the congestion control indication parameter; stopping a random access process for transmitting uplink data in an inactive state under the condition that congestion control is required; and/or randomly selecting a random number c between a and b, comparing the random number c with the congestion control factor, and determining whether to perform congestion control according to a comparison result, wherein the value range of the congestion control probability factor is (a, b), and a, b and c are any real numbers; and/or continuing to initiate a random access process for transmitting uplink data in an inactive state after the congestion control duration is suspended.
In another aspect, the present invention further provides an uplink data transmitting apparatus, including: a sending unit, configured to send congestion control information to an inactive user equipment through a random access signaling or a system message, where the congestion control information is used to instruct the user equipment to perform congestion control when sending uplink data; and the access unit is used for carrying out random access on the user equipment according to the congestion control result of the user equipment.
Optionally, the congestion control information includes at least one of a congestion control indication parameter, a congestion control probability factor, and a congestion control duration.
Optionally, the congestion control information is the congestion control indication parameter, and the corresponding congestion control indicates that the random access process for inactive uplink data transmission is stopped when the user equipment needs to perform congestion control when transmitting uplink data; the congestion control information is the congestion control probability factor, the corresponding congestion control is the probability of controlling the user equipment to carry out congestion control, and the random access process for transmitting the uplink data in the inactive state is stopped under the condition that the user equipment needs to carry out the congestion control when transmitting the uplink data according to the congestion control probability factor; the congestion control information is the congestion control duration, and the corresponding congestion control is the duration for controlling the ue to stop the random access process for inactive uplink data transmission.
Optionally, the value range of the congestion control probability factor is (a, b), when the ue performs congestion control check, the ue randomly selects a random number c between a and b, compares the random number c with the congestion control factor, and determines whether to perform congestion control according to a comparison result, where a, b, and c are any real numbers.
Optionally, the sending unit includes a first sending module, configured to send the congestion control information to all the user equipments in the inactive state or the designated user equipment in the inactive state through the random access signaling.
Optionally, the first sending module is specifically configured to: and sending the message 2MSG2 once or repeatedly within the time window of the random access response, or scheduling and sending the message 2MSG2 once in each available downlink wireless subframe within the time window of the random access response.
Optionally, the first sending module is specifically configured to: carrying the congestion control information in a media access layer sub-header MAC sub-header of a message 2MSG2 of the random access signaling, and sending the congestion control information to all user equipment in an inactive state or specified user equipment in the inactive state; and/or carrying the congestion control information in a random access response message of the message 2MSG2 of the random access signaling, and sending the congestion control information to all user equipment in an inactive state or specified user equipment in the inactive state.
Optionally, the designated user equipment is determined by a preset preamble sequence identifier or a preset spreading code in the random access signaling.
Optionally, the first sending module is specifically configured to: scheduling MSG2 by using RNTI corresponding to the preamble sequence identifier or PDCCH DCI scrambled by RNTI corresponding to the spread spectrum code, wherein the MSG2 comprises a response message aiming at one preamble sequence or spread spectrum code; or scheduling MSG2 by using PDCCH DCI scrambled by one common RNTI, wherein the MSG2 comprises response messages aiming at a plurality of preamble sequence identifications or spreading codes, and each response message is identified by a corresponding preamble sequence or spreading code.
Optionally, the access unit is further configured to stop initiating the random access procedure for transmitting the uplink data in the inactive state when the number of times of contention resolution failure in the random access procedure initiated by the user equipment exceeds a preset number threshold.
In another aspect, the present invention further provides an uplink data transmitting apparatus, including: a receiving unit, configured to receive congestion control information sent by a base station through a random access signaling or a system message; and the control unit is used for carrying out congestion control on the uplink data transmission according to the congestion control information.
Optionally, the congestion control information includes at least one of a congestion control indication parameter, a congestion control probability factor, and a congestion control duration.
Optionally, the control unit is specifically configured to: determining whether the uplink data needs to be subjected to congestion control or not according to the congestion control indication parameter; stopping a random access process for transmitting uplink data in an inactive state under the condition that congestion control is required; and/or randomly selecting a random number c between a and b, comparing the random number c with the congestion control factor, and determining whether to perform congestion control according to a comparison result, wherein the value range of the congestion control probability factor is (a, b), and a, b and c are any real numbers; and/or continuing to initiate a random access process for transmitting uplink data in an inactive state after the congestion control duration is paused.
In another aspect, the present invention further provides a base station, including a processor for data processing, a memory for data storage, and a data transceiver for data transmission and/or reception, where the memory is configured to store instructions for implementing an uplink data transmission method for an inactive ue, and the processor is configured to execute the instructions stored in the memory, and when the processor executes the instructions stored in the memory, the steps performed include: sending congestion control information to inactive user equipment through a random access signaling or a system message, wherein the congestion control information is used for indicating the user equipment to carry out congestion control when the user equipment sends uplink data; and carrying out random access on the user equipment according to the congestion control result of the user equipment.
Optionally, the congestion control information includes at least one of a congestion control indication parameter, a congestion control probability factor, and a congestion control duration.
Optionally, the congestion control information is the congestion control indication parameter, and the corresponding congestion control indicates that the random access process for inactive uplink data transmission is stopped when the user equipment needs to perform congestion control when transmitting uplink data; the congestion control information is the congestion control probability factor, the corresponding congestion control is the probability of controlling the user equipment to perform congestion control, and the random access process for inactive uplink data transmission is stopped when the user equipment needs to perform congestion control when transmitting uplink data according to the congestion control probability factor; the congestion control information is the congestion control duration, and the corresponding congestion control is the duration for controlling the ue to stop the random access process for inactive uplink data transmission.
Optionally, sending the congestion control information to the user equipment through the random access signaling includes: and sending the congestion control information to all the user equipment in the inactive state or the designated user equipment in the inactive state through the random access signaling.
Optionally, the sending the congestion control information to all the user equipments in the inactive state or the designated user equipment in the inactive state through the random access signaling includes: and sending the message 2MSG2 once or repeatedly within the time window of the random access response, or scheduling and sending the message 2MSG2 once in each available downlink wireless subframe within the time window of the random access response.
Optionally, the sending the congestion control information to all the inactive user equipments or the specified inactive user equipment through the random access signaling includes: carrying the congestion control information in a media access layer sub-header MAC sub-header of a message 2MSG2 of the random access signaling, and sending the congestion control information to all user equipment in an inactive state or specified user equipment in the inactive state; and/or carrying the congestion control information in a random access response message of the message 2MSG2 of the random access signaling, and sending the congestion control information to all user equipment in an inactive state or specified user equipment in the inactive state.
In another aspect, the present invention further provides a ue, including a processor for data processing, a memory for data storage, and a data transceiver for data transmission and/or reception, where the memory is configured to store instructions for implementing an uplink data transmission method for an inactive ue, and the processor is configured to execute the instructions stored in the memory, and when the processor executes the instructions stored in the memory, the steps performed include: receiving congestion control information sent by a base station through random access signaling or system information; and carrying out congestion control on the uplink data transmission according to the congestion control information.
Optionally, the congestion control information includes at least one of a congestion control indication parameter, a congestion control probability factor, and a congestion control duration.
Optionally, the performing congestion control on uplink data transmission according to the congestion control information includes: determining whether the uplink data needs to be subjected to congestion control or not according to the congestion control indication parameter; stopping a random access process for transmitting uplink data in an inactive state under the condition that congestion control is required; and/or randomly selecting a random number c between a and b, comparing the random number c with the congestion control factor, and determining whether congestion control is performed according to a comparison result, wherein the value range of the congestion control probability factor is (a, b), and a, b and c are any real numbers; and/or continuing to initiate a random access process for transmitting uplink data in an inactive state after the congestion control duration is suspended.
The uplink data sending method, the device, the base station and the user equipment provided by the embodiment of the invention can send congestion control information to inactive user equipment through random access signaling or system information, indicate the user equipment to carry out congestion control when sending uplink data, and then carry out random access on the user equipment according to the congestion control result of the user equipment. Therefore, when the network is congested, the inactive UE can be controlled to correspondingly control the sending behavior of the uplink data, so that the congestion is avoided, and the sending efficiency is effectively improved.
Drawings
Fig. 1 is a flowchart of an uplink data transmitting method according to an embodiment of the present invention;
fig. 2 is another flowchart of an uplink data transmission method according to an embodiment of the present invention;
fig. 3 is a signaling exchange diagram in an uplink data transmitting method according to an embodiment of the present invention;
fig. 4 is another signaling exchange diagram in the uplink data transmitting method according to the embodiment of the present invention;
fig. 5 is a schematic structural diagram of an uplink data transmitting apparatus according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of an uplink data transmitting apparatus according to an embodiment of the present invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.
As shown in fig. 1, an embodiment of the present invention provides an uplink data transmission method, which is based on a base station, and includes:
s11, sending congestion control information to inactive user equipment through a random access signaling or a system message, wherein the congestion control information is used for indicating the user equipment to carry out congestion control when sending uplink data;
and S12, performing random access to the user equipment according to the congestion control result of the user equipment.
The uplink data transmission method provided by the embodiment of the invention can transmit congestion control information to inactive user equipment through random access signaling or system information, instruct the user equipment to perform congestion control when transmitting uplink data, and then perform random access on the user equipment according to a congestion control result of the user equipment. Therefore, when the network is congested, the inactive UE can be controlled to correspondingly control the sending behavior of the uplink data, so that the congestion is avoided, and the sending efficiency is effectively improved.
Optionally, the congestion control information in step S11 may include one or more of a congestion control indication parameter, a congestion control probability factor, and a congestion control duration.
Specifically, in an embodiment of the present invention, the congestion control information is a congestion control indication parameter, and the corresponding congestion control indicates that the ue stops a random access process for transmitting the uplink data in an inactive state when the ue needs to perform congestion control when transmitting the uplink data; optionally, when the congestion control indication parameter is in the first state, the ue may be instructed to perform congestion control when sending uplink data, and when the congestion control indication parameter is in the second state, the ue may be instructed not to perform congestion control when sending uplink data.
In another embodiment of the present invention, the congestion control information is a congestion control probability factor, and the corresponding congestion control is a probability of controlling the ue to perform congestion control. Stopping a random access process for transmitting the uplink data in an inactive state under the condition that the user equipment needs to perform congestion control when transmitting the uplink data according to the congestion control probability factor; for example, in an embodiment of the present invention, a value range of a congestion control probability factor is (a, b), and when the ue performs a congestion control check, the ue may randomly select a random number c between a and b, compare the random number c with the congestion control factor, and determine whether to perform congestion control according to a comparison result, where a, b, and c are any real numbers. Optionally, how to determine whether to perform congestion control according to a comparison result between the random number c and the congestion control factor may be set as needed, where the congestion control may be performed when the random number c is greater than the congestion control factor, or may be set to perform congestion control when the random number c is less than the congestion control factor, as long as the congestion control can be performed according to a certain probability, which is not limited in the embodiment of the present invention. For example, in one embodiment of the present invention, the congestion control probability factor is 40, the user equipment randomly selects a random number c from natural numbers of 1 to 100 at a time, performs congestion control if c is greater than 40, does not perform congestion control if c is equal to or less than 40, and has a probability of performing congestion control of 60%.
In another embodiment of the present invention, the congestion control information is a congestion control duration, and the corresponding congestion control is a duration for controlling the ue to stop a random access process for inactive uplink data transmission. That is, when the congestion control duration is included in the congestion control information, the UE may continue to transmit uplink data in the inactive state for the congestion control duration from receiving the congestion control information, that is, does not initiate an RACH procedure for transmitting data in the inactive state for the congestion control duration.
In the above congestion control procedure, although the UE temporarily does not initiate the RACH procedure for transmitting data in the inactive state, the UE does not affect the initiation of the RRC connection recovery or RRC connection establishment procedure, that is, the UE can still initiate the RRC connection recovery or RRC connection establishment procedure.
In step S11, in the case of sending the congestion control information to the ue through the random access signaling, optionally, the congestion control information may be sent to all ues in an inactive state or a designated ue in an inactive state through the random access signaling.
Optionally, carrying and sending manners of the congestion control information may be various, and the embodiment of the present invention does not limit this. For example, in an embodiment of the present invention, the congestion control information may be carried in a MAC header of the random access signaling MSG2, and sent to all the user equipments in the inactive state or the designated user equipments in the inactive state.
Specifically, when sending congestion control information to a specific user equipment, different user equipments have different preamble sequence identifiers or different spreading codes, and the specific user equipment may be determined by a preset preamble sequence identifier or a preset spreading code in the random access signaling, and only the user equipment corresponding to the preamble sequence identifier or the spreading code performs corresponding congestion control.
Optionally, when the congestion control information is sent to all the user equipments, corresponding preamble sequence identifiers or spreading codes may not be configured, or preamble sequence identifiers or spreading codes common to all the user equipments are configured, so that all the UEs receiving the congestion control information can perform corresponding congestion control accordingly. For example, in a MAC sub-header for random access response, other values where the parameter T is backoff or non-preamble ID may be configured to indicate a congestion control indication (congestion control indicator) to all inactive ues.
Further, in addition to carrying the congestion control information in the MAC header of the random access signaling MSG2, the congestion control information may also be carried in a random access response message of the MSG2, and the congestion control information is sent to all the user equipments in the inactive state or the designated user equipment in the inactive state.
Specifically, in a MAC subheader for a random access response, a bit may be used to indicate that a MAC RAR exists, and indicate congestion control information, such as a congestion control indication, a congestion control factor, and/or a congestion control duration, in the MAC RAR.
Optionally, in an embodiment of the present invention, sending the congestion control information to all the user equipments in the inactive state or the specified user equipment in the inactive state through the random access signaling may specifically include:
scheduling MSG2 by using Radio Network Temporary Identifier (RNTI) corresponding to the preamble sequence identifier or PDCCH DCI scrambled by RNTI corresponding to the spread spectrum code, wherein the MSG2 comprises a response message aiming at one preamble sequence or spread spectrum code;
or
Scheduling MSG2 using a common RNTI scrambled PDCCH DCI, said MSG2 containing response messages for a plurality of preamble sequence identifications or spreading codes, each said response message identified by a corresponding preamble sequence or spreading code.
Optionally, in the process of sending the congestion control information to all the user equipments in the inactive state or the designated user equipment in the inactive state through the random access signaling, the message 2MSG2 may be sent once or repeatedly within a time window of a random access response, or the message 2MSG2 may be scheduled and sent once in each available downlink wireless subframe within the time window of the random access response.
Optionally, the preamble sequence used in the random access signaling may be from a dedicated preamble resource pool in the inactive state, or may be from a common preamble resource pool in the active state and the inactive state.
In order to prevent the communication efficiency from being reduced due to frequent failure in the random process of initiating the inactive uplink data transmission by the inactive user equipment, optionally, the random access process of initiating the inactive uplink data transmission may be stopped when the number of contention resolution failures in the random access process initiated by the user equipment exceeds a preset number threshold. Especially, when the network configures an independent resource pool for transmitting uplink data in an inactive state and the resource pool is congested, the network can timely control the behavior of the UE transmitting the uplink data in the inactive state through message2 or a system message. For example, after contention resolution fails, the inactive state may no longer be used to send uplink data, but rather, resources in different random access resource pools are used to initiate RRC connection establishment or an RRC recovery process to enter an RRC connected state to continue sending uplink data.
Specifically, when the congestion control information is sent to the inactive ue through the cell system message, one or more of the congestion control indication parameter, the congestion control probability factor, and the congestion control duration may be carried in the system message.
Optionally, the specific sending times may be indicated by a system message, a protocol agreement, or in the congestion control information. Before initiating the RACH to transmit uplink data in an inactive state, the UE may read the system message to obtain the congestion control information.
Correspondingly, as shown in fig. 2, an embodiment of the present invention further provides an uplink data sending method, which is based on a user equipment, and includes:
s21, receiving congestion control information sent by a base station through a random access signaling or a system message;
and S22, carrying out congestion control on the uplink data transmission according to the congestion control information.
The uplink data transmission method provided by the embodiment of the invention can receive the congestion control information sent by the base station through the random access signaling or the system message, and carry out congestion control on the uplink data transmission according to the congestion control information. Therefore, when the network is congested, the inactive UE can correspondingly control the sending behavior of the uplink data, so that congestion is avoided, and the sending efficiency is effectively improved.
Optionally, the congestion control information includes one or more of a congestion control indication parameter, a congestion control probability factor, and a congestion control duration.
Optionally, the performing congestion control on uplink data transmission according to the congestion control information may include:
determining whether the uplink data needs to be subjected to congestion control or not according to the congestion control indication parameter;
stopping a random access process for transmitting uplink data in an inactive state under the condition that congestion control is required;
and/or
Randomly selecting a random number c between a and b, comparing the random number c with the congestion control factor, and determining whether congestion control is performed according to a comparison result, wherein the value range of the congestion control probability factor is (a, b), and a, b and c are any real numbers;
and/or
And continuing to initiate a random access process for transmitting uplink data in an inactive state after the congestion control duration is suspended.
The uplink data transmission method provided by the present invention is described in detail below with specific embodiments.
Example 1
As shown in fig. 3, in the technology for transmitting uplink data by an inactive UE based on a 4-step RACH procedure, an access network configures a part of random access channel resources for the inactive UE to transmit uplink data. Namely, a part of the preamble code of the physical random access channel is configured as the preamble code for transmitting uplink data transmission, which is referred to as a preamble set S2 herein, and the preamble used for the UE to initiate the RRC connection establishment procedure or initiate the RRC resume procedure from the active state back to the RRC connected state and other RACH procedures is referred to as a preamble set S1. The access network indicates the configuration information of the preamble set S1 and the set S2 through a system message.
It should be noted that, in the actual configuration, the above-mentioned preamble set S1 and set S2 may respectively include a plurality of preamble groups, that is, the preamble set S1 and set S2 may be divided into a plurality of groups according to the grant size of the message 3 and the path loss or the radio signal quality of the UE. For example, the preamble set S1 may include two preamble groups, which are called group a and group B.
When the UE in the inactive state initiates the inactive state to transmit uplink data, selecting a preamble P1 from the preamble set S2 for transmitting uplink data in the inactive state, and transmitting the preamble P1 in a Physical Random Access Channel (PRACH), where the preamble is referred to as message1 in a 4-step RACH process.
After detecting the preamble P1, the access network element sends a message2 in an RAR response window (RAR response window). The MAC PDU of Message2 includes 1 or more MAC headers for Random Access Response (MAC header for Random Access Response), and 0 or more Random Access Response messages (MAC RAR).
Optionally, each MAC subheader for random access response contains E/R/BI/RAPID information combination, where:
e: i.e., extension Bit, for indicating whether there is more E/T/RAPID combination information in the MAC header.
T: i.e., type information, for indicating whether the MAC subheader contains a backoff indicator or a Random access ID (RAPID).
BI: a Backoff Indicator, which is used to indicate a Backoff time range of the UE when a contention resolution failure occurs.
RAPID: this information is used to identify the preamble code of the random access.
Optionally, the indication of the congestion control information in the message2 includes one or more of the following:
congestion control indication parameter (congestion control indicator): indicating whether the UE receiving the indication performs congestion control.
Congestion control probability factor information (congestion control factor): for indicating the probability of congestion control by the UE. Specifically, the probability factor is a numerical value, and the value range thereof is (a, b), when the UE performs congestion control check, the UE randomly selects a random number c between a and b, and compares the random number c with the congestion control factor, and if the random number c is greater than or less than the probability factor, the UE performs the congestion control.
Congestion control time length (congestion control time length): for indicating the length of time for the UE to perform congestion control.
Optionally, the congestion control information is indicated in the message2 in one of the following manners:
public part indication in message 2;
at this time, a part or all of the congestion control information is indicated in one MAC RAR in the message2, and is applied to all UEs that receive the congestion control information.
Alternatively, a MAC subheader for a random access response, whose value T is indicated as backoff or other value other than preamble ID, may indicate a congestion control indicator (congestion control indicator).
Optionally, a MAC subheader for the random access response and having a value T indicating another value, which is backoff or non-prefix ID, is further used to indicate that a MAC RAR exists in the MAC subheader. And the congestion control information is indicated in the MAC RAR and comprises a control indicator and a control factor.
Indicated in message2 in the MAC RAR for one preamble;
at this time, the MAC RAR for one preamble in the message2 includes part or all of the congestion control information. The congestion control information is applicable to the UE using the preamble in message 1.
Wherein, the part or all of the congestion control information indicated in the message2 is one or more combinations of the congestion control indication information, the congestion control probability factor information and the congestion control time length information indicated in the message 2.
The UE that needs to perform congestion control may perform corresponding congestion control processing according to the received congestion control information, and the congestion control processing mainly includes one of the following:
and if the congestion control information only contains the congestion control probability factor and the UE needs to perform congestion control according to the requirement of the probability factor, the UE stops the current RACH process. Optionally, an RRC connection recovery procedure or an RRC connection setup procedure is initiated to send uplink data.
And if the congestion control information only contains a congestion control instruction and the value of the congestion control instruction is set to be in need of congestion control, the UE stops the current RACH process. Optionally, an RRC connection recovery procedure or an RRC connection setup procedure is initiated to send uplink data.
If the congestion control information only contains the congestion control time length information, the UE does not use the non-active state to send uplink data after the congestion control information is received, namely, does not initiate the RACH process for sending data in the non-active state. However, alternatively, the UE may initiate an RRC connection recovery or RRC connection establishment procedure.
If the congestion control information only contains the congestion control instruction and the congestion control time length information, and the value of the congestion control instruction is set to be in need of congestion control, the UE stops the current RACH process, and does not use the inactive state to send uplink data for the time of the congestion control time length, namely does not initiate the RACH process for sending data in the active state. Optionally, the UE may initiate an RRC connection recovery or RRC connection establishment procedure.
And if the congestion control information only comprises a congestion control instruction and a congestion control probability factor, the value of the congestion control instruction is set to be required to carry out congestion control, and the UE is required to carry out congestion control according to the congestion control probability factor, the UE stops the current RACH process. And optionally, an RRC connection recovery procedure or an RRC connection setup procedure is initiated thereafter to transmit uplink data.
If the congestion control information only contains the congestion control probability control factor and the congestion control time length information, and the UE needs to perform congestion control according to the congestion control probability factor, the UE does not use the inactive state to send uplink data after receiving the congestion control information for the time of the congestion control time length, namely, does not initiate the RACH process for sending data in the active state. However, alternatively, the UE may initiate an RRC connection recovery or RRC connection establishment procedure.
If the congestion control information comprises a congestion control instruction, a congestion control probability factor and a congestion control time length, the value of the congestion control instruction is set to be required to perform congestion control, and the UE needs to perform congestion control according to the congestion control probability factor, starting from the reception of the congestion control information, the time for lasting the congestion control time length does not use an inactive state to transmit uplink data, namely, an RACH process for transmitting data in an active state is not initiated. However, alternatively, the UE may initiate an RRC connection recovery or RRC connection establishment procedure.
If the congestion control information does not contain the congestion control length information, but the UE needs to perform congestion control according to the congestion control indication and/or the congestion control probability factor, the UE stops the current RACH process, and can continue to initiate the RACH process for transmitting data in the inactive state after the time backoff indicated by backoff.
Further, the UE does not continue to transmit uplink data in the inactive state after the number of failures to initiate the RACH procedure reaches the predetermined number. The predetermined number of times is indicated by a system message, a protocol agreement, or in the congestion control information. Specifically, the following cases are included:
if the congestion control information only contains the congestion control probability factor and the UE needs to perform congestion control according to the requirement of the probability factor, the UE stops initiating the RACH process for sending data in the active state after the RACH contention resolution failure times reach the preset times. And optionally, an RRC connection recovery procedure or an RRC connection setup procedure is initiated thereafter to transmit uplink data.
If the congestion control information only contains a congestion control instruction, and the value of the congestion control instruction is set to be the congestion control instruction required, the UE stops initiating the RACH process for sending data in the active state after the RACH contention resolution failure times reach the preset times. And optionally, an RRC connection recovery procedure or an RRC connection setup procedure is initiated thereafter to transmit uplink data.
If the congestion control information only contains the congestion control time length information, the UE does not initiate the RACH process for transmitting data in the inactive state for the duration of the congestion control time length after the RACH contention resolution failure times reach the preset times. Optionally, the UE may initiate an RRC connection recovery or RRC connection establishment procedure.
If the congestion control information only contains the congestion control instruction and the congestion control time length information, and the value of the congestion control instruction is set to be required to carry out congestion control, the UE does not initiate the RACH process for transmitting data in the inactive state for the time of the congestion control time length after the RACH contention resolution failure times reach the preset times. Optionally, the UE may initiate an RRC connection recovery or RRC connection establishment procedure.
And if the congestion control information only comprises a congestion control instruction and a congestion control probability factor, the value of the congestion control instruction is set to be required to carry out congestion control, and the UE is required to carry out congestion control according to the congestion control probability factor, the UE stops initiating the RACH process for transmitting data in the inactive state after the RACH contention resolution failure times reach the preset times. And optionally, an RRC connection recovery procedure or an RRC connection setup procedure is initiated thereafter to transmit uplink data.
If the congestion control information only contains the congestion control probability control factor and the congestion control time length information, and the UE needs to perform congestion control according to the congestion control probability factor, the UE does not initiate the RACH process for transmitting data in the inactive state for the time of the congestion control time length after the RACH contention resolution failure times reach the preset times. Optionally, the UE may initiate an RRC connection recovery or RRC connection establishment procedure.
If the congestion control information comprises a congestion control instruction, a congestion control probability factor and a congestion control time length, the value of the congestion control instruction is set to be required to perform congestion control, and the UE needs to perform congestion control according to the congestion control probability factor, the UE does not initiate an RACH process for transmitting data in an inactive state for the time length of the congestion control time after the RACH contention resolution failure times reach the preset times. Optionally, the UE may initiate an RRC connection recovery or RRC connection establishment procedure.
If the UE initiates the RRC connection establishment or RRC connection recovery process, it means that the UE selects a previous in the previous set S1, and carries an RRC connection establishment request (RRC connection setup request) or an RRC connection recovery request (RRC connection resume request) message in the message 3.
Example 2
The difference of this embodiment in embodiment 1 is that the access network does not allocate a dedicated preamble set S2 to the RACH procedure for transmitting uplink data in the inactive state, that is, when the UE initiates the RACH for transmitting uplink data in the inactive state, the same random access resource as that of other RACH procedures is used.
In this case, the UE initiates a RACH procedure for transmitting uplink data in an inactive state and a RACH procedure for the UE to initiate an RRC connection setup or RRC recovery procedure, using the same random access resource configuration.
Example 3
The method of this example differs from the method provided in example 1 of the present invention in that:
in the 2-step RACH-based procedure as shown in fig. 4, the access network is configured for contention-based uplink resource (contention-based UL resource).
When initiating the RACH, the UE selects the contention-based uplink resource and sends a message1, and the method includes but is not limited to one of the following:
1. a preamble code is transmitted and an uplink message1 is transmitted in the corresponding resource.
2. And carrying out spread spectrum processing on the message1 by using a spread spectrum code and transmitting.
The method for the access network to send the message2 comprises the following steps:
1. the message2 is transmitted in a specific response window, and the message2 is scheduled by the PDCCH DCI scrambled by the RNTI corresponding to the preamble code or the spreading code, and the message2 at this time includes a response message for one preamble code or spreading code.
2. Sending the message2 in a specific response window, and scheduling the message2 by using the PDCCH DCI scrambled by a common RNTI, wherein the content of the message2 comprises a response message aiming at a plurality of preamble codes or spreading codes, and the response message is identified by the identifier of the preamble codes or the spreading codes.
The response message for the specific preamble or spreading code carries a contention resolution Identity (UE contention resolution Identity) for the UE. When receiving the response message corresponding to the used preamble or spreading code, the UE compares whether the contention resolution identification information of the UE is the contention resolution identification of the UE. If so, the contention resolution of this RACH procedure is successful. Otherwise, the contention resolution of the RACH procedure fails.
In the above process, if the message2 is scheduled by PDCCH DCI scrambled by a common RNTI, and the message2 contains a response message for multiple preambles or spreading codes, part or all of the following information is indicated in the message2 or PDCCH DCI scheduling the message 2:
backoff information for indicating backoff time information of the UE when contention resolution fails.
2. The congestion control information defined in embodiment 1 of the present invention is used to control congestion control in which the UE transmits uplink data in an inactive state.
If the message2 is scheduled by PDCCH DCI scrambled with RNTI to a specific preamble or spreading code, the message2 contains a response message to a preamble or spreading code. One of the following methods is selected:
1. in each transmitted message2 or PDCCH DCI scheduling each message2, one or more combinations of Backoff information, and/or congestion control information defined in embodiment 1 of the present invention are indicated.
2. Defining a common RNTI, wherein the PDCCH DCI scrambled by the RNTI needs to be received by the UE receiving the message2 in the response window. In the DCI scrambled by the common RNTI or the common message2 sent in the downlink resource indicated by the DCI scrambled by the RNTI, backoff information is indicated, and/or one or more combinations of congestion control information defined in embodiment 1 of the present invention are/is indicated.
Preferably, the PDCCH DCI scrambled by the common RNTI or the common message2 transmitted in the downlink resource indicated by the DCI scrambled by the common RNTI is repeatedly transmitted multiple times in the response window, or is scheduled and transmitted once in each available downlink radio subframe in the response window.
Example 4
The present embodiment is different from embodiment 1 in that congestion control information of uplink data is transmitted by indicating an inactive state in a system message of a cell.
The congestion control information comprises:
1. congestion control indicator (congestion control indicator) for transmitting uplink data in the inactive state: for indicating whether the UE is allowed to transmit uplink data in the inactive state.
And indicating the preset times of allowing to initiate the non-active state to send the uplink data through a system message indication, a protocol convention or in the congestion control information.
Optionally, congestion control information used by different QoS or traffic types may also be indicated in the system message. And the UE judges whether to carry out congestion control according to the QoS and the service type of the transmitted uplink data and the corresponding congestion control information.
Before initiating RACH to send uplink data in an inactive state, the UE reads the system message to obtain the congestion control information.
And if the congestion control instruction defines that the RACH process for transmitting the uplink data in the inactive state is not allowed to be initiated, the UE enters a connected state by initiating an RRC connection establishment or RRC connection recovery process to transmit the uplink data.
According to the uplink data transmission method provided by the embodiment of the invention, the congestion control information in the inactive state is indicated in the random access response message (message 2 in the 4-step RACH and message2 in the 2-step RACH), so that a mechanism capable of controlling the UE to transmit uplink data through the inactive state in time when the network is congested is provided for the network. Especially, when the network configures an independent resource pool for sending uplink data in an inactive state and the resource pool is congested, the network may timely control the behavior of the UE sending the uplink data in the inactive state through a message2 or a system message, for example, after contention resolution fails, the UE does not send the uplink data in the inactive state, but instead initiates RRC connection establishment or an RRC recovery process using different random access resources to enter an RRC connection state to continue sending the uplink data.
Correspondingly, as shown in fig. 5, an embodiment of the present invention further provides an uplink data transmitting apparatus 5, which is based on a base station, and includes:
a sending unit 51, configured to send congestion control information to an inactive ue through a random access signaling or a system message, where the congestion control information is used to instruct the ue to perform congestion control when sending uplink data;
an accessing unit 52, configured to perform random access to the ue according to the congestion control result of the ue.
The uplink data sending apparatus 5 provided in the embodiment of the present invention can send congestion control information to an inactive user equipment through a random access signaling or a system message, instruct the user equipment to perform congestion control when sending uplink data, and then perform random access to the user equipment according to a congestion control result of the user equipment. Therefore, when the network is congested, the inactive UE can be controlled to correspondingly control the sending behavior of the uplink data, so that the congestion is avoided, and the sending efficiency is effectively improved.
Optionally, the congestion control information includes at least one of a congestion control indication parameter, a congestion control probability factor, and a congestion control duration.
Optionally, the congestion control information is the congestion control indication parameter, and the corresponding congestion control indicates that the random access process for inactive uplink data transmission is stopped when the user equipment needs to perform congestion control when transmitting uplink data;
the congestion control information is the congestion control probability factor, the corresponding congestion control is the probability of controlling the user equipment to carry out congestion control, and the random access process for transmitting the uplink data in the inactive state is stopped under the condition that the user equipment needs to carry out the congestion control when transmitting the uplink data according to the congestion control probability factor;
the congestion control information is the congestion control duration, and the corresponding congestion control is the duration for controlling the ue to stop the random access process for inactive uplink data transmission.
Optionally, the value range of the congestion control probability factor is (a, b), when the ue performs congestion control check, the ue randomly selects a random number c between a and b, compares the random number c with the congestion control factor, and determines whether to perform congestion control according to a comparison result, where a, b, and c are any real numbers.
Optionally, the sending unit 51 includes a first sending module, configured to send the congestion control information to all the user equipments in the inactive state or the designated user equipment in the inactive state through the random access signaling.
Optionally, the first sending module is specifically configured to:
and sending the message 2MSG2 once or repeatedly within the time window of the random access response, or scheduling and sending the message 2MSG2 once in each available downlink wireless subframe within the time window of the random access response.
Optionally, the first sending module is specifically configured to:
carrying the congestion control information in a media access layer sub-header MAC sub-header of a message 2MSG2 of the random access signaling, and sending the congestion control information to all user equipment in an inactive state or specified user equipment in the inactive state; and/or
And carrying the congestion control information in a random access response message of the message 2MSG2 of the random access signaling, and sending the congestion control information to all user equipment in an inactive state or specified user equipment in the inactive state.
Optionally, the designated user equipment is determined by a preset preamble sequence identifier or a preset spreading code in the random access signaling.
Optionally, the first sending module is specifically configured to:
scheduling MSG2 by using RNTI corresponding to the preamble sequence identifier or PDCCH DCI scrambled by RNTI corresponding to the spread spectrum code, wherein the MSG2 comprises a response message aiming at one preamble sequence or spread spectrum code;
or
Scheduling MSG2 using a common RNTI scrambled PDCCH DCI, said MSG2 containing response messages for a plurality of preamble sequence identifications or spreading codes, each said response message identified by a corresponding preamble sequence or spreading code.
Optionally, the access unit 52 is further configured to stop initiating the random access procedure for transmitting the uplink data in the inactive state when the number of times of contention resolution failure in the random access procedure initiated by the user equipment exceeds a preset number threshold.
Correspondingly, as shown in fig. 6, an embodiment of the present invention further provides an uplink data transmitting apparatus 6, which is based on a user equipment, and includes:
a receiving unit 61, configured to receive congestion control information sent by a base station through a random access signaling or a system message;
a control unit 62, configured to perform congestion control on uplink data transmission according to the congestion control information.
The uplink data transmitting apparatus 6 according to the embodiment of the present invention can receive congestion control information transmitted by a base station through random access signaling or a system message, and perform congestion control on uplink data transmission according to the congestion control information. Therefore, when the network is congested, the inactive UE can correspondingly control the sending behavior of the uplink data, so that congestion is avoided, and the sending efficiency is effectively improved.
Optionally, the congestion control information includes at least one of a congestion control indication parameter, a congestion control probability factor, and a congestion control duration.
Optionally, the control unit 62 is specifically configured to:
determining whether the uplink data needs to be subjected to congestion control or not according to the congestion control indication parameter;
stopping a random access process for transmitting uplink data in an inactive state under the condition that congestion control is required;
and/or
Randomly selecting a random number c between a and b, comparing the random number c with the congestion control factor, and determining whether congestion control is performed according to a comparison result, wherein the value range of the congestion control probability factor is (a, b), and a, b and c are any real numbers;
and/or
And continuing to initiate a random access process for transmitting uplink data in an inactive state after the congestion control duration is suspended.
Correspondingly, an embodiment of the present invention further provides a base station, including a processor for data processing, a memory for data storage, and a data transceiver for data transmission and/or reception, where the memory is configured to store instructions for implementing an uplink data transmission method for an inactive ue, and the processor is configured to execute the instructions stored in the memory, and when the processor executes the instructions stored in the memory, the steps executed include:
sending congestion control information to inactive user equipment through a random access signaling or a system message, wherein the congestion control information is used for indicating the user equipment to carry out congestion control when the user equipment sends uplink data;
and carrying out random access on the user equipment according to the congestion control result of the user equipment.
Optionally, the congestion control information includes at least one of a congestion control indication parameter, a congestion control probability factor, and a congestion control duration.
Optionally, the congestion control information is the congestion control indication parameter, and the corresponding congestion control indicates that the random access process for inactive uplink data transmission is stopped when the user equipment needs to perform congestion control when transmitting uplink data; the congestion control information is the congestion control probability factor, the corresponding congestion control is the probability of controlling the user equipment to carry out congestion control, and the random access process for transmitting the uplink data in the inactive state is stopped under the condition that the user equipment needs to carry out the congestion control when transmitting the uplink data according to the congestion control probability factor; the congestion control information is the congestion control duration, and the corresponding congestion control is the duration for controlling the ue to stop the random access process for inactive uplink data transmission.
Optionally, sending the congestion control information to the user equipment through the random access signaling includes: and sending the congestion control information to all the user equipment in the inactive state or the designated user equipment in the inactive state through the random access signaling.
Optionally, the sending the congestion control information to all the inactive user equipments or the specified inactive user equipment through the random access signaling includes: and sending the message 2MSG2 once or repeatedly within the time window of the random access response, or scheduling and sending the message 2MSG2 once in each available downlink wireless subframe within the time window of the random access response.
Optionally, the sending the congestion control information to all the user equipments in the inactive state or the designated user equipment in the inactive state through the random access signaling includes: carrying the congestion control information in a media access layer sub-header MAC sub-header of a message 2MSG2 of the random access signaling, and sending the congestion control information to all user equipment in an inactive state or specified user equipment in the inactive state; and/or carrying the congestion control information in a random access response message of the message 2MSG2 of the random access signaling, and sending the congestion control information to all user equipment in an inactive state or specified user equipment in the inactive state.
Correspondingly, an embodiment of the present invention further provides a ue, including a processor for data processing, a memory for data storage, and a data transceiver for data transmission and/or reception, where the memory is configured to store instructions for implementing an uplink data transmission method for an inactive ue, and the processor is configured to execute the instructions stored in the memory, and when the processor executes the instructions stored in the memory, the step of executing includes:
receiving congestion control information sent by a base station through random access signaling or system information;
and carrying out congestion control on the uplink data transmission according to the congestion control information.
Optionally, the congestion control information includes at least one of a congestion control indication parameter, a congestion control probability factor, and a congestion control duration.
Optionally, the performing congestion control on uplink data transmission according to the congestion control information includes: determining whether the uplink data needs to be subjected to congestion control or not according to the congestion control indication parameter; stopping a random access process for transmitting uplink data in an inactive state under the condition that congestion control is required; and/or randomly selecting a random number c between a and b, comparing the random number c with the congestion control factor, and determining whether to perform congestion control according to a comparison result, wherein the value range of the congestion control probability factor is (a, b), and a, b and c are any real numbers; and/or continuing to initiate a random access process for transmitting uplink data in an inactive state after the congestion control duration is suspended.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (30)

1. An uplink data transmission method, comprising:
sending congestion control information to inactive user equipment through a random access signaling or a system message, wherein the congestion control information is used for indicating the user equipment to carry out congestion control when sending uplink data;
carrying out random access on the user equipment according to the congestion control result of the user equipment;
the congestion control information comprises at least one of a congestion control indication parameter, a congestion control probability factor and a congestion control duration.
2. The method of claim 1, wherein the congestion control information is the congestion control indication parameter, and the corresponding congestion control indicates that the ue stops a random access procedure for transmitting uplink data in an inactive state when congestion control is required for transmitting uplink data;
the congestion control information is the congestion control probability factor, the corresponding congestion control is the probability of controlling the user equipment to carry out congestion control, and the random access process for transmitting the uplink data in the inactive state is stopped under the condition that the user equipment needs to carry out the congestion control when transmitting the uplink data according to the congestion control probability factor;
the congestion control information is the congestion control duration, and the corresponding congestion control is the duration for controlling the ue to stop the random access process for inactive uplink data transmission.
3. The method of claim 2, wherein the congestion control probability factor has a value range of (a, b), and when the ue performs the congestion control check, the ue randomly selects a random number c between a and b, compares the random number c with the congestion control factor, and determines whether to perform congestion control according to a comparison result, where a, b, and c are any real numbers.
4. The method according to any of claims 1 to 3, wherein sending the congestion control information to the user equipment via the random access signaling comprises:
and sending the congestion control information to all the user equipment in the inactive state or the designated user equipment in the inactive state through the random access signaling.
5. The method of claim 4, wherein the sending the congestion control information to all user equipments in an inactive state or a specific user equipment in an inactive state through the random access signaling comprises:
and sending the message 2MSG2 once or repeatedly for multiple times in the time window of the random access response, or scheduling and sending the message 2MSG2 once in each available downlink wireless subframe in the time window of the random access response.
6. The method of claim 4, wherein the sending the congestion control information to all user equipments in an inactive state or a specific user equipment in an inactive state through the random access signaling comprises:
carrying the congestion control information in a media access layer sub-header MAC sub-header of a message 2MSG2 of the random access signaling, and sending the congestion control information to all user equipment in an inactive state or specified user equipment in the inactive state; and/or
And carrying the congestion control information in a random access response message of the message 2MSG2 of the random access signaling, and sending the congestion control information to all user equipment in an inactive state or specified user equipment in the inactive state.
7. The method of claim 6, wherein the specified UE is determined by a preset preamble sequence identifier or a preset spreading code in the random access signaling.
8. The method of claim 7, wherein the sending the congestion control information to all user equipments in an inactive state or a specific user equipment in an inactive state through the random access signaling comprises:
scheduling MSG2 by using RNTI corresponding to the preamble sequence identifier or PDCCH DCI scrambled by RNTI corresponding to the spread spectrum code, wherein the MSG2 comprises a response message aiming at one preamble sequence or spread spectrum code;
or
Scheduling MSG2 using a common RNTI scrambled PDCCH DCI, said MSG2 containing response messages for a plurality of preamble sequence identifications or spreading codes, each said response message identified by a corresponding preamble sequence or spreading code.
9. The method according to any of claims 1 to 3, wherein the random access procedure for transmitting uplink data in an inactive state is stopped from being initiated in case that the number of contention resolution failures of the random access procedure initiated by the UE exceeds a preset number threshold.
10. The method according to any of claims 1 to 3, wherein the preamble sequence used in the random access signaling is from a preamble resource pool dedicated for inactive state or from a preamble resource pool common for active and inactive state.
11. An uplink data transmission method, comprising:
receiving congestion control information sent by a base station through random access signaling or system information;
carrying out congestion control on uplink data transmission according to the congestion control information;
the congestion control information comprises at least one of a congestion control indication parameter, a congestion control probability factor and a congestion control duration.
12. The method of claim 11, wherein the congestion controlling uplink data transmission according to the congestion control information comprises:
determining whether the uplink data needs to be subjected to congestion control or not according to the congestion control indication parameter;
stopping a random access process for transmitting uplink data in an inactive state under the condition that congestion control is required;
and/or
Randomly selecting a random number c between a and b, comparing the random number c with the congestion control factor, and determining whether congestion control is performed according to a comparison result, wherein the value range of the congestion control probability factor is (a, b), and a, b and c are any real numbers;
and/or
And continuing to initiate a random access process for transmitting uplink data in an inactive state after the congestion control duration is suspended.
13. An uplink data transmission device, comprising:
a sending unit, configured to send congestion control information to an inactive user equipment through a random access signaling or a system message, where the congestion control information is used to instruct the user equipment to perform congestion control when sending uplink data;
an access unit, configured to perform random access to the ue according to a congestion control result of the ue;
the congestion control information comprises at least one of a congestion control indication parameter, a congestion control probability factor and a congestion control duration.
14. The apparatus of claim 13, wherein the congestion control information is the congestion control indication parameter, and the corresponding congestion control indicates that the ue stops a random access procedure for inactive uplink data transmission when congestion control is required for uplink data transmission;
the congestion control information is the congestion control probability factor, the corresponding congestion control is the probability of controlling the user equipment to carry out congestion control, and the random access process for transmitting the uplink data in the inactive state is stopped under the condition that the user equipment needs to carry out the congestion control when transmitting the uplink data according to the congestion control probability factor;
the congestion control information is the congestion control duration, and the corresponding congestion control is the duration for controlling the ue to stop the random access process for inactive uplink data transmission.
15. The apparatus of claim 14, wherein the congestion control probability factor has a value range of (a, b), and when the ue performs congestion control check, the ue randomly selects a random number c between a and b, compares the random number c with the congestion control factor, and determines whether to perform congestion control according to a comparison result, where a, b, and c are any real numbers.
16. The apparatus according to any of claims 13 to 15, wherein the sending unit comprises a first sending module, configured to send the congestion control information to all the ues in the inactive state or a specific ue in the inactive state through the random access signaling.
17. The apparatus of claim 16, wherein the first sending module is specifically configured to:
and sending the message 2MSG2 once or repeatedly within the time window of the random access response, or scheduling and sending the message 2MSG2 once in each available downlink wireless subframe within the time window of the random access response.
18. The apparatus of claim 16, wherein the first sending module is specifically configured to:
carrying the congestion control information in a media access layer sub-header MAC sub-header of a message 2MSG2 of the random access signaling, and sending the congestion control information to all user equipment in an inactive state or specified user equipment in the inactive state; and/or
And carrying the congestion control information in a random access response message of the message 2MSG2 of the random access signaling, and sending the congestion control information to all user equipment in an inactive state or specified user equipment in the inactive state.
19. The apparatus of claim 18, wherein the designated ue is determined by a preset preamble sequence identifier or a preset spreading code in the random access signaling.
20. The apparatus of claim 19, wherein the first sending module is specifically configured to:
scheduling MSG2 by using RNTI corresponding to the preamble sequence identifier or PDCCH DCI scrambled by RNTI corresponding to the spread spectrum code, wherein the MSG2 comprises a response message aiming at one preamble sequence or spread spectrum code;
or
Scheduling MSG2 using a common RNTI scrambled PDCCH DCI, said MSG2 containing response messages for a plurality of preamble sequence identifications or spreading codes, each said response message identified by a corresponding preamble sequence or spreading code.
21. The apparatus according to any one of claims 13 to 16, wherein the access unit is further configured to stop initiating the random access procedure for transmitting uplink data in an inactive state if the number of times of contention resolution failure of the random access procedure initiated by the user equipment exceeds a preset number threshold.
22. An uplink data transmission device, comprising:
a receiving unit, configured to receive congestion control information sent by a base station through a random access signaling or a system message;
a control unit, configured to perform congestion control on uplink data transmission according to the congestion control information; the congestion control information comprises at least one of a congestion control indication parameter, a congestion control probability factor and a congestion control duration.
23. The device according to claim 22, characterized in that the control unit, in particular it is configured to:
determining whether the uplink data needs to be subjected to congestion control or not according to the congestion control indication parameter;
stopping a random access process for transmitting uplink data in an inactive state under the condition that congestion control is required;
and/or
Randomly selecting a random number c between a and b, comparing the random number c with the congestion control factor, and determining whether congestion control is performed according to a comparison result, wherein the value range of the congestion control probability factor is (a, b), and a, b and c are any real numbers;
and/or
And continuing to initiate a random access process for transmitting uplink data in an inactive state after the congestion control duration is suspended.
24. A base station comprising a processor for data processing, a memory for data storage, and a data transceiver for data transmission and/or reception, wherein the memory is configured to store instructions for implementing an uplink data transmission method for an inactive user equipment, and wherein the processor is configured to execute the instructions stored in the memory, and wherein the steps performed when the processor executes the instructions stored in the memory include:
sending congestion control information to inactive user equipment through a random access signaling or a system message, wherein the congestion control information is used for indicating the user equipment to carry out congestion control when the user equipment sends uplink data;
carrying out random access on the user equipment according to the congestion control result of the user equipment; the congestion control information comprises at least one of a congestion control indication parameter, a congestion control probability factor and a congestion control duration.
25. The base station of claim 24, wherein the congestion control information is the congestion control indication parameter, and the corresponding congestion control indicates that the ue stops a random access procedure for transmitting uplink data in an inactive state when congestion control is required for transmitting uplink data;
the congestion control information is the congestion control probability factor, the corresponding congestion control is the probability of controlling the user equipment to carry out congestion control, and the random access process for transmitting the uplink data in the inactive state is stopped under the condition that the user equipment needs to carry out the congestion control when transmitting the uplink data according to the congestion control probability factor;
the congestion control information is the congestion control duration, and the corresponding congestion control is the duration for controlling the ue to stop the random access process for inactive uplink data transmission.
26. The base station according to any of claims 24 to 25, wherein when the processor implements sending the congestion control information to the ue through the random access signaling, the implementing step includes:
and sending the congestion control information to all the user equipment in the inactive state or the designated user equipment in the inactive state through the random access signaling.
27. The base station of claim 26, wherein the processor, when implementing sending the congestion control information to all the ues in the inactive state or the designated ue in the inactive state through the random access signaling, implements the steps of:
and sending the message 2MSG2 once or repeatedly for multiple times in the time window of the random access response, or scheduling and sending the message 2MSG2 once in each available downlink wireless subframe in the time window of the random access response.
28. The base station of claim 27, wherein the processor, when sending the congestion control information to all the ues in the inactive state or the designated ue in the inactive state through the random access signaling, specifically implements the steps of:
carrying the congestion control information in a media access layer sub-header MAC sub-header of a message 2MSG2 of the random access signaling, and sending the congestion control information to all user equipment in an inactive state or specified user equipment in the inactive state; and/or
And carrying the congestion control information in a random access response message of the message 2MSG2 of the random access signaling, and sending the congestion control information to all user equipment in an inactive state or specified user equipment in the inactive state.
29. A user equipment comprising a processor for data processing, a memory for data storage, and a data transceiver for data transmission and/or reception, wherein the memory is configured to store instructions for implementing an uplink data transmission method for an inactive user equipment, and wherein the processor is configured to execute the instructions stored in the memory, and wherein the steps performed when the processor executes the instructions stored in the memory include:
receiving congestion control information sent by a base station through random access signaling or system information;
carrying out congestion control on uplink data transmission according to the congestion control information;
the congestion control information comprises at least one of a congestion control indication parameter, a congestion control probability factor and a congestion control duration.
30. The ue of claim 29, wherein when the processor implements congestion control on uplink data transmission according to the congestion control information, the implementation specific step includes:
determining whether the uplink data needs to be subjected to congestion control or not according to the congestion control indication parameter;
stopping a random access process for transmitting uplink data in an inactive state under the condition that congestion control is required;
and/or
Randomly selecting a random number c between a and b, comparing the random number c with the congestion control factor, and determining whether congestion control is performed according to a comparison result, wherein the value range of the congestion control probability factor is (a, b), and a, b and c are any real numbers;
and/or
And continuing to initiate a random access process for transmitting uplink data in an inactive state after the congestion control duration is suspended.
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