WO2019007054A1 - Method, device and system for establishing communication link, and storage medium - Google Patents

Abstract

Disclosed in embodiments of the present application are a method, device and system for establishing a communication link, and a storage medium. The method is applied to a User Equipment (UE). The method may comprise: monitoring a paging message on each downlink sub-frame after entering an IDLE state; sending a pre-cached RRC connection request message to a network when it is determined that a destination UE indicated by the paging message comprises the UE per se; receiving an RRC connection establishment message for the RRC connection request message; and establishing RRC connection according to the RRC connection establishment message.

Description

Method, device and system for establishing communication link, storage medium

Cross-reference to related applications

The present application is filed on the basis of the Chinese Patent Application No. PCT Application No.

Technical field

The present application relates to wireless communication technologies, and in particular, to a method, device and system, and storage medium for establishing a communication link.

Background technique

With the development of communication technology, research on the fifth generation mobile communication technology (5G, 5th-Generation) has also begun. From the current development direction of 5G technology, it will mainly cover three types of scenarios: the enhanced mobile broadband broadband (eMBB, Enhance Mobile Broadband) direction, mainly for 5G mobile phone user terminals; ultra high reliability URLLC (Ultra Reliable & Low Latency Communication), mainly for 5G emergency services or public safety, Automated Auto Network, Industry 4.0, etc.; and high-latency, low-cost Internet of Things (mMTC Massive) Machine Type Communication direction, mainly for low cost, low mobility, large-scale object connection, narrow band Internet of Things (NB-IoT, Narrow Band Internet of Things), enhanced machine type communication (eMTC), enhanced machine type communication (eMTC) For the main technical representatives.

For the direction of the uRLLC, the process of establishing a connection in the idle state to switch to the active connection state is implemented by means of discontinuous reception (DRX), that is, when the terminal is in the idle state, it needs to be in the DRX cycle. Upon arrival, wake up and receive the paging message sent by the network side, and in order to receive the paging message, the terminal in the idle state needs to monitor the paging wireless network temporary identifier (P-RNTI, Paging Radio Network Tempory) on the common channel. Identity) Physical downlink control channel (PDCCH, Physical Downlink Control CHannel).

For the above solution, it should be noted that, firstly, since the shortest DRX cycle is 32 radio frames, that is, 320 ms, in the worst case, it is desirable from the network side to communicate with the terminal to receive the paging message from the terminal. It takes 320 ms; secondly, the frequency domain resource of the Paging message is provided by the P-RNTI scrambled PDCCH. Since the P-RNTI scrambled PDCCH is in the common search space, the P-RNTI scrambling is decoded on the same subframe. The user equipment (UE, User Equipment) is more than one, and the Paging message is an RRC layer 3 message. Therefore, after the terminal monitors the P-RNTI scrambled PDCCH from the physical layer, it needs to decode the corresponding physical downlink shared channel (PDSCH, Physical). Downlink Shared Channel), so the UE needs to be processed by the Layer 2 Radio Link Control (RLC), the Medium Access Control (MAC), and the Packet Data Convergence Protocol (PDCP) layer. This message can be decoded at the Radio Resource Control (RRC) layer. That is to say, the Paging message is in the physical direction of the UE->>RLC-->MAC-->PDCP-->RRC, which itself introduces a time delay.

In combination with the above analysis, the scheme used in the process of transitioning to the active connection state in the idle idle state state introduces more delays, and the low latency requirement expected by uRLLC cannot be achieved.

Summary of the invention

To solve the above technical problem, the embodiment of the present application is to provide a method, a device, and a system for establishing a communication link, which can reduce the delay of the idle idle state terminal to switch to the active connection state.

The technical solution of the present application is implemented as follows:

In a first aspect, the embodiment of the present application provides a method for establishing a communication link, where the method is applied to a user equipment UE, and the method includes:

After entering the idle IDLE state, the paging message is monitored on each downlink subframe.

Determining, when the target UE indicated by the paging message includes the UE itself, sending a pre-cached RRC connection request message to the network side;

Receiving an RRC Connection Setup message for the RRC Connection Request message;

Establishing an RRC connection according to the RRC Connection Setup message.

In the above solution, the method further includes:

After entering the idle IDLE state, the existing DRX configuration information is ignored.

In the above solution, the method further includes:

After entering the IDLE state, the capability indication information is sent to the network side, and the capability indication information is used to indicate that the UE has the capability of listening to the paging message on each downlink subframe in the case of the IDLE state.

In the above solution, the paging message is monitored on each downlink subframe, including:

The physical downlink control channel PDCCH of each downlink subframe monitors whether there is downlink control information DCI for paging radio network temporary identifier P-RNTI scrambling;

Decoding the DCI and querying whether the ID of the UE itself is included in the decoded DCI when the PCI is scrambled by the P-RNTI;

When the ID of the UE itself is included in the decoded DCI, it is determined that the target UE indicated by the paging message includes the UE itself.

In the foregoing solution, when determining that the target UE indicated by the paging message includes the UE itself, sending a pre-cached RRC connection request message to the network side, including:

Determining that the target UE indicated by the paging message includes the UE itself, and continues to decode the DCI to obtain uplink authorization information;

And transmitting, according to the radio resource indicated by the uplink authorization information, the pre-cached RRC connection setup request message to the network side.

In the foregoing solution, the receiving an RRC connection establishment message for the RRC connection request message includes:

After transmitting the RRC connection request message, the UE monitors the RRC connection setup message in each downlink subframe.

In the above solution, the RRC connection setup message carries data content to be transmitted.

In a second aspect, an embodiment of the present application provides a method for establishing a communication link, where the method includes:

When a connection needs to be established with the idle IDLE state user equipment UE, the paging message is sent to the UE through the downlink subframe;

Receiving an RRC connection request message sent by the UE;

And transmitting an RRC connection setup message to the UE for the RRC connection request message.

In the above solution, the method further includes:

After the UE enters the IDLE state, receiving capability indication information sent by the UE, where the capability indication information is used to represent that the UE is in the IDLE state, and has a monitoring on each downlink subframe. The ability to call a message.

In the foregoing solution, the sending, by the downlink subframe, a paging message to the UE includes:

And placing, in the physical downlink control channel PDCCH of the downlink subframe, downlink control information DCI that is scrambled by the paging radio network temporary identifier P-RNTI, where the DCI includes an identifier of the UE and an uplink resource grant DCI; The uplink resource grant DCI includes radio resources required by the UE to send an RRC Connection Request message.

In the above solution, the RRC connection setup message carries data content to be transmitted.

In a third aspect, the embodiment of the present application provides a user equipment UE, where the UE includes: a first network interface, a first memory, and a first processor;

The first network interface is configured to receive and send signals during the process of transmitting and receiving information with other external network elements;

The first memory is configured to store a computer program executable on the first processor;

The first processor is configured to perform the steps of the method of any of the first aspects when the computer program is run.

In a fourth aspect, the embodiment of the present application provides a network device, where the network device includes: a second network interface, a second memory, and a second processor;

The second network interface is configured to receive and send signals during the process of transmitting and receiving information with other external network elements.

The second memory is configured to store a computer program capable of running on the second processor;

The second processor is configured to perform the steps of the method of any of the second aspects when the computer program is run.

In a fifth aspect, the embodiment of the present application provides a system for establishing a communication link, where the system includes a user equipment UE and a network equipment on the network side;

After the UE is configured to enter the idle IDLE state, the RRC connection request message is buffered in advance, and the paging message is monitored on each downlink subframe.

And determining, when the target UE indicated by the paging message includes the UE itself, sending a buffered RRC connection request message to the network side;

And receiving an RRC connection setup message for the RRC connection request message;

And establishing an RRC connection according to the RRC connection setup message;

The network device is configured to send a paging message to the UE by using a downlink subframe when a connection is established with the user equipment UE in the idle IDLE state;

Receiving an RRC connection request message sent by the UE;

And transmitting an RRC connection setup message to the UE for the RRC connection request message.

In a sixth aspect, the embodiment of the present application provides a storage medium, where the storage medium includes a stored computer program, wherein the computer program is executed to perform the method according to any one of the foregoing embodiments.

The embodiment of the present application provides a method, a device, and a system for establishing a communication link, and a storage medium. When the UE is in the IDLE state, the UE ignores the existing DRX configuration information, and does not need to wake up and listen to the paging message when the DRX cycle arrives. The paging message is monitored on each downlink subframe, so that when the network side needs to establish a connection and deliver information, the paging message can be sent without waiting for the duration of one DRX cycle, and the connection can be established and transmitted at any time as needed. Information, thereby reducing the delay of the idle idle state terminal transitioning to the active connected state.

DRAWINGS

FIG. 1 is a schematic flowchart of an idle state terminal transitioning to an active connection state according to an embodiment of the present disclosure;

2 is a schematic flowchart of a method for establishing a communication link according to an embodiment of the present application;

FIG. 3 is a schematic flowchart of a method for establishing a communication link according to an embodiment of the present application;

4 is a schematic flowchart of a method for establishing a communication link according to an embodiment of the present application;

FIG. 5 is a schematic diagram of signaling interaction provided by an embodiment of the present application;

FIG. 6 is a schematic structural diagram of a user equipment according to an embodiment of the present disclosure;

FIG. 7 is a schematic structural diagram of a network device according to an embodiment of the present application;

FIG. 8 is a schematic structural diagram of a system for establishing a communication link according to an embodiment of the present disclosure.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described in the following with reference to the accompanying drawings in the embodiments.

First, a general procedure for the idle idle state terminal to switch to the active connection state is described. Referring to FIG. 1, a process for establishing a connection in a idle idle state terminal is shown. The process may include the following steps: S10, when the mobility management entity (MME) , Mobile Management Entity) needs to send downlink data to the idle IDLE state UE in the Evolved Packet System Connection Management (ECM), and it will be in all tracking areas (TA, Tracking Area) registered with the UE. All evolved base stations (eNBs, evolved Node Bs) send a paging PAGING message. The specific process of the MME sending a PAGING message to the eNB can be found in the 3.GPP (3GPP, 3rd Generation Partnership Project) protocol 36.413. The content of the section. For the process after the eNB receives the PAGING message, refer to the description in section 8.5 of the 3GPP protocol 36.413. Then, in S20, the eNB sends a Paging message to the UE through the air interface, and the specific process of the eNB sending the Paging message to the UE is as follows in 6.2. The record of 2 sections. S30. After receiving the Paging message, the UE in the RRC_IDLE state initiates an RRC connection establishment procedure to receive the call. For the specific processing procedure of the UE, refer to the description in Section 5.3.2 of 3GPP Protocol 36.331.

In the general procedure described in FIG. 1, a paging channel (PCH, Paging CHannel) is used to transmit Paging information from a Paging Control Channel (PCCH). The PCH can be directly mapped to the PDSCH physical channel and participate in downlink scheduling together with the downlink shared channel (DL-SCH, Downlink Share Channel) data. The sample content of the Paging message is as follows:

In the example of the Paging message, the pagingRecordList may be represented as a list of paging UEs, and if present, the systemInfoModification may indicate a system message change other than the System Information Block (SIB), SIB11, and SIB12, etws- Indication, if present, may indicate that an earthquake and tsunami warning system (ETWS, Earthquake and Tsunami Warning System) primarily informs the primary notification and/or ETWS secondary notification of the secondary notification.

For the pagingRecordList, only the UE in the RRC_IDLE state will read the information in the pagingRecordList. In order to receive the Paging message from the eNodeB, the UE in the RRC_IDLE state will listen to the PDCCH scrambled using the P-RNTI (eg, the value is 0xFFFE).

Since Paging supports DRX, the UE in the RRC_IDLE state can "wake up" to receive the paging message within a predefined time period, and can maintain the "sleep" state at other times, so that the benefit is reduced. Power consumption increases the battery life of the UE.

Further, the frequency domain resource occupied by the paging message is specified by the PDCCH scrambled by the P-RNTI (see Table 7.1-2 of 3GPP protocol 36.213). In the time domain, the UE only attempts to receive a Paging message in a specific subframe of a specific frame in its Paging period, and the specific frame may be referred to as a Paging Frame (PF), the specific subframe. It can be called a paging occasion (PO, Paging Occasion). The PF is a radio frame and may include one or more POs. There may be a PDCCH on the PO that uses P-RNTI scrambling and indicates a Paging message. When DRX is used, the UE only needs to detect 1 PO in each DRX cycle, that is, for each UE, only 1 subframe can be used to send Paging in each Paging period. The DRX cycle is the same concept as the Paging cycle; PF is a system frame that satisfies the following formula:

SFN mod T=(T div N)×(UE_ID mod N)

In practical applications, the index i_s can be used to query Table 1 or Table 2 (see section 7.2 of 3GPP Protocol 36.304) to obtain the PO.

Table 1

FDD:

Ns PO when i_s=0 PO when i_s=1 PO when i_s=2 PO when i_s=3 1 9 N/A N/A N/A 2 4 9 N/A N/A 4 0 4 5 9

Table 2

TDD (all UL/DL configurations):

Ns PO when i_s=0 PO when i_s=1 PO when i_s=2 PO when i_s=3 1 0 N/A N/A N/A 2 0 5 N/A N/A 4 0 1 5 6

For the configuration parameters of the PCCH, the specific configuration contents are as follows:

In the above specific configuration, the parameter defaultPagingCycle is the default DRX cycle, corresponding to the "T" defined in 3GPP36.304. Where rf32 corresponds to 32 system frames, rf64 corresponds to 64 system frames, and so on. The parameter nB is used to derive PF and PO (see 3GPP 36.304). Among them, fourT corresponds to 4×T, twoT corresponds to 2×T, and so on.

Through the above-mentioned general procedure description for the transition of the idle idle state terminal to the active connection state, it can be seen that, due to the limitation of the DRX cycle, the idle idle state terminal needs to receive the Paging message when the DRX cycle arrives, and a time delay is introduced; Since the Paging message is an RRC layer 3 message, after the terminal needs to receive the P-RNTI scrambled PDCCH from the physical layer, it must also process the RLC, MAC, and PDCP layers to decode the message at the RRC layer. When the idle idle state terminal receives the Paging message, it passes through the RLC, MAC, and PDCP from the physical layer, and then can reach the RRC layer. At this time, a time delay is also introduced.

For the general process scheme of the above-mentioned idle idle state terminal transition to the active connection state, the embodiment of the present application solves the problem of the foregoing solution by the following embodiments.

Embodiment 1

Referring to FIG. 2, a method for establishing a communication link according to an embodiment of the present application is shown. The method may be applied to a UE, and the method may include:

S201: After the UE enters the idle IDLE state, the UE monitors the paging message on each downlink subframe.

In particular, in the existing general scheme shown in FIG. 1, in the idle mode, the UE can be maintained in the sleep phase during the off period, so that most of the circuits (eg, radio receiver circuits) in the UE are cut off. . The UE may wake up during the PO to monitor control information on a particular channel. For example, during a PO, the UE may wake up and monitor frames of the control channel for downlink information (eg, a call message from the MME) or other information initiated by the wireless communication network. For example, if the UE and the eNB are arranged to communicate with each other according to the 3GPP-LTE standard, the UE may wake up during the PO and monitor the transmission time instant of the PDCCH to determine if the UE is being called by the wireless communication network. When not in the PO, the UE may suppress monitoring of the control channel (eg, not monitoring the control channel) to reduce power consumption. For example, if the UE and the eNB are arranged to communicate with each other according to the 3GPP LTE standard, the UE may suppress monitoring (eg, not monitoring) the transmission time instant of the PDCCH during times other than the PO.

For the technical solution of the embodiment, in many scenarios, even if the UE does not need to perform excessive communication, the desired effect at this time is not to reduce energy consumption, but is expected to be able to be achieved when a connection needs to be established and information is transmitted. Low latency and high reliability.

Specifically, in order to enable the UE to listen to the paging message on each downlink subframe, after the UE enters the idle IDLE state, the method shown in FIG. 2 may further include: the UE ignores the existing DRX configuration information.

For example, taking the in-vehicle UE in the car network as an example, the network device on the network side may be exemplarily selected as an eNB. During the running of the vehicle, the power generation of the vehicle engine can supply power to the vehicle-mounted UE. Therefore, the vehicle-mounted UE enters the IDLE state although it does not need to perform too frequent communication, but the vehicle-mounted UE is expected without considering the energy consumption and the endurance problem. When a connection needs to be established and information is transmitted on the network side, the connection can be established and information can be transmitted with low latency and with high reliability. Therefore, when the in-vehicle UE is in the IDLE state, the radio transceiver circuit and the processing circuit can be kept from being cut off, and any DRX parameter information configured by the network side through the dedicated message or the common configuration message can be ignored, so that the in-vehicle UE can be in the IDLE state. At this time, the paging message can still be monitored on each downlink subframe.

S202: The UE determines that the target UE indicated by the paging message includes the UE itself, and sends a pre-cached RRC connection request message to the network side.

It should be noted that after the UE enters the IDLE state, the RRC connection request message may be buffered in advance, so that when the UE determines that it is paged, the UE can immediately send the buffered RRC connection request message to the network side for uplink transmission. Reduce the delay.

S203: The UE receives an RRC connection setup message for the RRC connection request message.

S204: The UE establishes an RRC connection according to the RRC connection setup message.

For S203 and S204, the UE may receive the RRC connection setup message returned by the network side after transmitting the buffered RRC connection request message to the network side, so that the relevant control parameters in the RRC connection setup message are The RRC connection is established on the network side. Up to this point, the UE also transitions from the IDLE state to the active connection state. The subsequent UE can exchange and transmit information with the network side through the established RRC connection.

It can be seen from the technical solution shown in FIG. 2 that since the UE ignores the existing DRX configuration information in the IDLE state, it is not necessary to wake up and listen to the paging message when the DRX cycle arrives, but in each downlink subframe. Listening to the paging message, so that when the network side needs to establish a connection and transmit information, the paging message can be sent without waiting for the duration of one DRX cycle, and the connection can be established and the information can be transmitted at any time as needed, thereby reducing the idle idle The state terminal transitions to the delay of activating the connected state.

For the technical solution shown in FIG. 2, in a possible implementation manner, since the UE can listen to the paging message on each downlink subframe in the case of the IDLE state, the network side is required to be in the IDLE. In the state, it is possible to establish a connection with the UE and transmit data when it is necessary to transmit data to the UE. Therefore, after entering the IDLE state, the UE may send capability indication information to the network side, where the capability indication information is used to characterize the UE's ability to listen to paging messages on each downlink subframe in the IDLE state. After receiving the capability indication message, the network side can send a paging message to the UE at any time when the data needs to be sent to the UE, so as to establish a connection with the UE and transmit data, so as to prevent the network side from waiting for the DRX cycle to arrive before sending the paging message. .

Specifically, the UE may notify the network side of the capability indication information by using a bit bit or an uplink message of the uplink information. For example, the UE may go to the network side through a customized information format or message before entering the IDLE state. The notification is performed; the capability indication information may be carried in the notification message that informs the network side that the user enters the IDLE state, and the description of the embodiment is not described herein.

For the technical solution shown in FIG. 2, in a possible implementation manner, the UE that listens to the paging message on each downlink subframe may include:

The UE monitors whether there is P-RNTI scrambled downlink control information (DCI, Downlink Control Information) in the PDCCH of each downlink subframe.

Decoding the DCI and querying whether the ID of the UE itself is included in the decoded DCI when the PCI is scrambled by the P-RNTI;

When the ID of the UE itself is included in the decoded DCI, it is determined that the target UE indicated by the paging message includes the UE itself.

It can be understood that when the P-RNTI scrambled DCI is not monitored, it indicates that the subframe has no network paging requirement; when the decoded DCI does not include the identifier of the UE itself, it indicates that the subframe is a search. The message is called, but not the paging message for the UE. Therefore, when the above two situations occur, the UE can ignore the subframe.

For the implementation, the UE determines that the target UE indicated by the paging message includes the pre-cached RRC connection request message to the network side, and may include:

Determining, by the UE, that the target UE indicated by the paging message includes the UE itself, continuing to decode the DCI, and acquiring uplink authorization information;

And transmitting, by the radio resource indicated by the uplink authorization information, the cached RRC connection setup request message to the network side.

Specifically, when the identifier of the UE itself is included in the decoded DCI, the description is a paging message sent by the UE itself, so that the UE may continue to try to decode the DCI to obtain uplink authorization information. It can be understood that the uplink authorization information can be encapsulated in the DCI, and the specific form includes but is not limited to DCI 0 or DCI 4. After successfully decoding the uplink authorization information, the buffer may be notified that the buffered RRC connection establishment request message is sent to the network side, and the radio resource occupied by the uplink transmission RRC connection setup request message may be indicated by the uplink authorization information. Wireless resources.

For the technical solution shown in FIG. 2, in a possible implementation, the UE receiving the RRC connection setup message for the RRC connection request message may include:

After transmitting the RRC connection request message, the UE monitors the RRC connection setup message in consecutive downlink subframes.

For the technical solution shown in FIG. 2, in a possible implementation manner, in order to further reduce the delay of establishing a connection and transmitting data, the RRC connection setup message carries data content to be transmitted.

Generally, the RRC connection setup message generally includes a configuration parameter for establishing an RRC connection, which is used to indicate that the UE establishes an RRC connection, but may be after a part of the data content to be transmitted is hooked to the configuration parameter, so that the UE acquires an RRC connection setup message. At the same time, it is also possible to start receiving data content to be transmitted. In an actual process, preferably, the data content to be transmitted carried by the RRC connection setup message may be the first one of several data packets to be transmitted, so that when the UE establishes according to the RRC connection, After the RRC connection is established, the message starts to receive subsequent data packets of the plurality of data packets to be transmitted except the first data packet through the RRC connection, thereby reducing the time required for data transmission and reducing the delay of data transmission. .

The method for establishing a communication link provided by the embodiment, the UE ignores the existing DRX configuration information in the IDLE state, does not need to wake up and listen to the paging message when the DRX cycle arrives, but listens on each downlink subframe. Paging a message, so that when the network side needs to establish a connection and deliver information, the paging message can be sent without waiting for the duration of one DRX cycle, and the connection can be established and transmitted at any time as needed, thereby reducing the idle idle state terminal. The delay to switch to the active connection state.

Embodiment 2

Based on the same technical concept of the foregoing embodiment, referring to FIG. 3, a method for establishing a communication link according to an embodiment of the present application is provided. The method may be applied to a network device on a network side, and the method may include:

S301: Send a paging message to the UE by using a downlink subframe when a connection is established with the idle IDLE state UE.

It should be noted that, in combination with the technical solution of the foregoing embodiment, in order to enable the UE to listen to the paging message on each downlink subframe, the network device on the network side also needs to ignore the existing DRX configuration information for the UE, thereby being able to When a connection needs to be established with the UE and the information is transmitted, the paging message is directly sent to the UE.

S302: Receive an RRC connection request message sent by the UE.

S303: Send an RRC connection setup message to the UE for the RRC connection request message.

Through the technical solution shown in FIG. 3, when the network side needs to establish a connection with the UE and transmit information, the paging message can be sent without waiting for the duration of one DRX cycle, and the connection can be established and the information can be transmitted at any time as needed. The delay of the idle idle state terminal transitioning to the active connected state is reduced.

For the technical solution shown in FIG. 3, in a possible implementation manner, the network device on the network side may further receive the capability indication information sent by the UE after the UE enters the IDLE state, where the capability indication information is used to represent the UE. In the case of the IDLE state, there is the ability to listen for paging messages on each downlink subframe. After receiving the capability indication message, the network side can send a paging message to the UE at any time when the data needs to be sent to the UE, so as to establish a connection with the UE and transmit data, so as to prevent the network side from waiting for the DRX cycle to arrive before sending the paging message. .

Specifically, the capability indication information may be notified by the UE by using a bit bit of the uplink information or an uplink message. For example, the UE may perform the information format or message to the network side before entering the IDLE state. The notification may be carried in the notification message that informs the network side that the user enters the IDLE state, which is not described in detail in this embodiment.

For the technical solution shown in FIG. 3, in a possible implementation, sending a paging message to the UE by using a downlink subframe may include:

And placing a DCI scrambled by the P-RNTI in the PDCCH of the downlink subframe, where the DCI includes an identifier of the UE and an uplink resource grant DCI; and the uplink resource grant DCI includes the UE sending an RRC connection request message. The required wireless resources.

For the technical solution shown in FIG. 3, in a possible implementation manner, in order to further reduce the delay of establishing a connection and transmitting data, the RRC connection setup message carries data content to be transmitted.

Generally, the RRC connection setup message generally includes a configuration parameter for establishing an RRC connection, which is used to instruct the UE to establish an RRC connection, but may select a part of the data content to be connected to the configuration parameter in the data content to be transmitted, so that the UE is acquiring. At the same time as the RRC connection setup message, it is also possible to start receiving the data content to be transmitted. In an actual process, the network side network device may use the first data packet of the plurality of data packets to be transmitted as the data content to be transmitted carried by the RRC connection setup message, so that when the UE is configured according to the After the RRC connection setup message establishes the RRC connection, it starts to receive subsequent data packets except for the first data packet among the several data packets to be transmitted through the RRC connection, thereby reducing the time required for data transmission and reducing the data transmission. Delay.

The method for establishing a communication link provided by this embodiment, when the UE is in the IDLE state, the network device on the network side ignores the existing DRX configuration information, and does not need to send a paging message to the UE when the DRX cycle arrives, but needs to When the UE establishes a connection and transmits information, it establishes a connection and transmits information at any time, thereby reducing the delay of the idle idle state terminal transitioning to the active connection state.

Embodiment 3

Based on the same technical concept of the foregoing embodiment, the specific scenario of the embodiment is taken as an example of an application scenario in the Internet of Vehicles. When the vehicle is in the running process, the network side needs to notify the in-vehicle UE of the road condition information, for example, an accident occurs in front of the road. Alarm information, congestion information in front of the road, etc., because of the low probability of occurrence of such information, it is not necessary to frequently notify the in-vehicle UE, but this information is very important, so it is necessary to minimize delay and high reliability when it occurs. The in-vehicle UE is notified, and therefore, the general process described in FIG. 1 cannot achieve the requirements of low latency and high reliability. The technical solutions of the first embodiment and the second embodiment can achieve low latency and high reliability. Therefore, referring to FIG. 4, the specific implementation steps in the application scenario of the embodiment may include:

S401: The vehicle-mounted UE monitors the state of the vehicle, and when it is detected that the automobile engine is in the running state, determines that it enters the continuous monitoring paging message mode;

It should be noted for S401 that the in-vehicle UE is usually integrated in the vehicle and can monitor the state of the car, such as flameout, ignition, running speed, and the like. Specifically, the vehicle can be detected to be in a state of successful ignition by monitoring a specific pin signal of the OBD interface or monitoring that the engine speed is not zero. Since the engine of the vehicle has been started, it means that the driver has entered the driving state, and at this time, the vehicle-mounted UE can be powered by the power generation of the engine. The vehicle-mounted UE can enter the continuous monitoring paging message mode instead of considering the battery life problem. It can be understood that the continuous listening paging message mode described in this embodiment is also the working mode in which the in-vehicle UE monitors the paging message on each downlink subframe in the IDLE state.

S402: After the in-vehicle UE enters the continuous monitoring paging message mode, notify the network side of the notification information that is in the continuous monitoring paging message mode.

For S402, the in-vehicle UE can notify the network side by using a bit of the uplink information or an uplink message. At this time, the paging message sent by the network side can be monitored in any one subframe to trigger the establishment of the communication link.

S403: After the in-vehicle UE informs the notification information, enters the idle state, ignores any DRX parameter information of the previous network configuration, starts to listen to the paging message in each subframe, and stores the RRC connection request message in the sending buffer in advance.

For S403, when the in-vehicle UE stores the RRC connection request message in the transmission transmission buffer Tx Buffer, once the condition is satisfied, the uplink message can be triggered immediately. Set the identity of the vehicle-mounted UE to 123456789. The format of the cached uplink RRC setup request Connection Request message is as follows:

RRCConnectionRequest-r8-IEs::=SEQUENCE{

ue-Identity 123456789,

establishmentCause:mt-Access

Spare BIT STRING(SIZE(1))

}

Among them, ue-Identity represents the vehicle-mounted UE identity.

S404: After receiving the notification message, the network side ignores the DRX parameter previously configured for the in-vehicle UE, and immediately sends a paging message when there is data transmission or other service requirement for the in-vehicle UE.

For S404, the specific implementation manner may be: placing the DCI information scrambled by the P-RNTI onto the PDCCH, and directly including the Paging-Identity of the paging vehicle UE in the DCI. Then it is sent to the vehicle UE. As shown in FIG. 5, it is assumed that the network informs the in-vehicle UE that there is a paging with DCI 1A/1C or the like, and carries the identity of the in-vehicle UE, for example, 123456789.

Format 1A:

-Carrier indicator–0 or 3bits

-Flag for format0/format1A differentiation–1bit

.........................

Paging-Identity=123456789

UL-ResourceRB=22

.........................

or

DCI 1C:

-1bit indicates the gap value

.........................

Paging-Identity=123456789

UL-ResourceRB=22

.........................

S405: The in-vehicle UE attempts to search and decode the DCI with the P-RNTI for each subframe.

S406: The vehicle-mounted UE determines whether the decoding is successful: if the decoding fails, the current subframe has no network paging requirement, and the vehicle-mounted UE will switch back to S405 to continue to search for and decode the DCI for each subframe by using the P-RNTI; If the decoding DCI is successful, go to S407: the in-vehicle UE reads the in-vehicle UE identifier in the decoded DCI;

S408: The in-vehicle UE compares the in-vehicle UE identifier in the DCI with its own identifier to determine whether it matches. If the match is unsuccessful, it proves that the current subframe is not sent to itself, and the vehicle UE does not respond at this time. If the match is successful, it proves that the network side is paging itself. Then, proceed to S409: the in-vehicle UE sends the RRC connection request message of the sending buffer to the network side from the sending buffer immediately;

S410: The network side monitors whether the uplink receives the RRC connection request message in real time, and once intercepted, attaches the first packet data in the series of data packets to be sent to the RRC Setup message, and sends an RRC Setup message to the in-vehicle UE. .

Specifically, the example format of the RRC Setup message is as follows. Since the DCI Format 1/1A/1B/1C is scrambled by the Cell Radio Network Temporary Identifier (C-RNTI), the specific procedure is given in the 3GPP protocol. Out, inform the RB where the RRC Setup message is located. The vehicle UE decodes the RRC Setup message, and the message example is as follows:

It should be noted that, in the message example, the text following the double slash indicates the annotation and explanation for the example content, and the following three double slashes respectively indicate the required configuration in the three data blocks SRB1, SRB2, and DRB1. parameter. Finally, the data of the UserDataPack part carries the RRC message content part.

S411: The in-vehicle UE monitors the C-RNTI scrambled DCI, and after monitoring the downlink RRC Setup message, adjusts the subsequent radio link resources by using the control parameter in the RRC Setup message, and simultaneously attempts to decode the data part carried by the RRC message, and obtains The first package of data.

S412: At this point, the communication link is completely established, and the network side continues to transmit the second packet, the third packet, and the subsequent data packet in a series of data packets to be sent until the last data packet is sent through the data link. Car UE.

It can be understood that there is no need to have any RRC signaling interaction in the process of transmitting the data packet in S412. Only the first packet data will be carried in the RRC message. After the data transmission ends, the network releases the RRC connection. The in-vehicle UE continues to be in the continuous listening paging message mode.

S413: The in-vehicle UE periodically monitors the running state of the vehicle and the engine state to determine whether the engine is running. If the engine is still running, repeat steps S401 and S412. If the engine is turned off or the door is opened, the driver has left. When the network side needs emergency communication, it will be considered that the car battery is powered at this time, and the power consumption problem needs to be considered. Therefore, the S414: the vehicle UE goes to the network. The side sends the information of stopping the continuous listening paging message mode, and enters the DRX state according to the previously configured DRX parameters. After receiving the message, the network side also sends a paging message to the subsequent downlink paging only during the DRX wake-up period.

Referring to the flow diagram shown in FIG. 4, referring to the information interaction diagram shown in FIG. 5, it can be seen that the DCI in the downlink PDCCH of the leftmost network to the UE in FIG. 5 is scrambled by P-RNTI, and the specific format is as follows. As shown in the figure, not only the paging UE identity Paging-Identity but also the downlink resource block is RB22. At this time, the UE determines that the paging message specifies itself, and then sends the buffered RRC connection request message in the buffer Tx Buffer, that is, the RRC Connection Request message is sent to the network side through the RB22, and the network side receives the RRC Connection Request message. Then, the RRC Setup message is packed, where the first data packet of the user is carried, and the DCI in the downlink PDCCH of the network to the UE in FIG. 5 can be scrambled by C-RNTI, and the specific scrambling scheme is in the existing 3GPP protocol. Given that UserDataPack={8872762ABDE} in the RRC Setup message is the part of the data carried.

After receiving the RRC Setup message, the UE establishes the communication link, and the network side can send the subsequent 2nd, 3th, ...th data packets to the UE in the downlink. These packets can also be scrambled with C-RNTI.

Through the foregoing process shown in FIG. 4 and the information interaction shown in FIG. 5, by adopting the solution of the embodiment of the present application, since it is not necessary to wake up and listen to the paging message when the DRX cycle arrives, it is monitored on each downlink subframe. Paging a message, so that when the network side needs to establish a connection and transmit information, the paging message can be sent without waiting for the duration of one DRX cycle, and the connection can be established and the information can be transmitted at any time as needed, thereby establishing the communication link. The delay is reduced from a few hundred ms to about 1 ms.

Embodiment 4

Based on the same technical concept of the foregoing embodiment, referring to FIG. 6, a user equipment UE 60 provided by an embodiment of the present application includes: a first network interface 601, a first memory 602, and a first processor 603; The components are coupled together by a bus system 604. It will be appreciated that bus system 604 is used to implement connection communication between these components. The bus system 604 includes a power bus, a control bus, and a status signal bus in addition to the data bus. However, for clarity of description, various buses are labeled as bus system 604 in FIG. among them,

The first network interface 601 is configured to receive and send signals during the process of transmitting and receiving information with other external network elements;

a first memory 602 configured to store a computer program executable on the first processor 603;

The first processor 603 is configured to execute when the computer program is executed:

After the user equipment UE enters the idle IDLE state, the paging message is monitored on each downlink subframe.

Determining, when the target UE indicated by the paging message includes the UE itself, sending a pre-cached RRC connection request message to the network side;

Receiving an RRC Connection Setup message for the RRC Connection Request message;

Establishing an RRC connection according to the RRC Connection Setup message.

It can be understood that the first memory 602 in the embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory may be a read-only memory (ROM), a programmable read only memory (PROM), an erasable programmable read only memory (Erasable PROM, EPROM), or an electric Erase programmable read only memory (EEPROM) or flash memory. The volatile memory can be a Random Access Memory (RAM) that acts as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (Synchronous DRAM). SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM), Enhanced Synchronous Dynamic Random Access Memory (ESDRAM), Synchronous Connection Dynamic Random Access Memory (SDRAM) And direct memory bus random access memory (DRRAM). The first memory 602 of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

The first processor 603 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the foregoing method may be completed by an integrated logic circuit of hardware in the first processor 603 or an instruction in a form of software. The first processor 603 may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), or a field programmable gate array (FPGA). Or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general purpose processor may be a microprocessor or the processor or any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor. The software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like. The storage medium is located in the first memory 602, and the first processor 603 reads the information in the first memory 602, and completes the steps of the foregoing method in combination with the hardware thereof.

It will be appreciated that the embodiments described herein can be implemented in hardware, software, firmware, middleware, microcode, or a combination thereof. For hardware implementation, the processing unit can be implemented in one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processing (DSP), Digital Signal Processing Equipment (DSP Device, DSPD), programmable Programmable Logic Device (PLD), Field-Programmable Gate Array (FPGA), general purpose processor, controller, microcontroller, microprocessor, other for performing the functions described herein In an electronic unit or a combination thereof.

For a software implementation, the techniques described herein can be implemented by modules (eg, procedures, functions, and so on) that perform the functions described herein. The software code can be stored in memory and executed by the processor. The memory can be implemented in the processor or external to the processor.

In an embodiment of the present application, the first processor 603 is further configured to: when the computer program is executed, execute:

After the UE enters the idle IDLE state, the existing DRX configuration information is ignored.

In an embodiment of the present application, the first processor 603 is further configured to: when the computer program is executed, execute:

After entering the IDLE state, the UE sends capability indication information to the network side, where the capability indication information is used to indicate that the UE is capable of listening to paging messages in each downlink subframe in the case of the IDLE state.

In an embodiment of the present application, the first processor 603 is further configured to: when the computer program is executed, execute:

The physical downlink control channel PDCCH of each downlink subframe monitors whether there is downlink control information DCI for paging radio network temporary identifier P-RNTI scrambling;

Decoding the DCI and querying whether the ID of the UE itself is included in the decoded DCI when the PCI is scrambled by the P-RNTI;

When the ID of the UE itself is included in the decoded DCI, it is determined that the target UE indicated by the paging message includes the UE itself.

In an embodiment of the present application, the first processor 603 is further configured to: when the computer program is executed, execute:

Determining that the target UE indicated by the paging message includes the UE itself, and continues to decode the DCI to obtain uplink authorization information;

And transmitting, according to the radio resource indicated by the uplink authorization information, a pre-cached RRC connection setup request message to the network side.

In an embodiment of the present application, the first processor 603 is further configured to: when the computer program is executed, execute:

After transmitting the RRC connection request message, the RRC connection setup message is monitored in consecutive downlink subframes.

In an implementation manner of the application, the RRC connection setup message carries data content to be transmitted.

In addition, each component in this embodiment may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software function module.

The integrated unit may be stored in a computer readable storage medium if it is implemented in the form of a software function module and is not sold or used as a stand-alone product. Based on such understanding, the technical solution of the embodiment is essentially Said that the part contributing to the prior art or all or part of the technical solution can be embodied in the form of a software product stored in a storage medium, comprising a plurality of instructions for making a computer device (may It is a personal computer, a server, or a network device, etc. or a processor that performs all or part of the steps of the method described in this embodiment. The foregoing storage medium includes: a U disk, a mobile hard disk, a read only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes.

Accordingly, the present embodiment provides a computer readable storage medium having stored thereon a computer program that, when executed by a processor, executes:

After entering the idle IDLE state, the paging message is monitored on each downlink subframe.

Determining, when the target UE indicated by the paging message includes the UE itself, sending a pre-cached RRC connection request message to the network side;

Receiving an RRC Connection Setup message for the RRC Connection Request message;

Establishing an RRC connection according to the RRC Connection Setup message.

In an embodiment of the present application, when the computer program is executed by the processor, the method further executes:

After entering the idle IDLE state, the existing DRX configuration information is ignored.

In an embodiment of the present application, when the computer program is executed by the processor, the method further executes:

After entering the IDLE state, the capability indication information is sent to the network side, and the capability indication information is used to indicate that the UE has the capability of listening to the paging message on each downlink subframe in the case of the IDLE state.

In an embodiment of the present application, when the computer program is executed by the processor, the method further executes:

The physical downlink control channel PDCCH of each downlink subframe monitors whether there is paging downlink network temporary identifier P-RNTI scrambled downlink control information DCI;

Decoding the DCI and querying whether the ID of the UE itself is included in the decoded DCI when the PCI is scrambled by the P-RNTI;

When the ID of the UE itself is included in the decoded DCI, it is determined that the target UE indicated by the paging message includes the UE itself.

In an embodiment of the present application, when the computer program is executed by the processor, the method further executes:

Determining that the target UE indicated by the paging message includes the UE itself, and continues to decode the DCI to obtain uplink authorization information;

And transmitting, according to the radio resource indicated by the uplink authorization information, a pre-cached RRC connection setup request message to the network side.

In an embodiment of the present application, when the computer program is executed by the processor, the method further executes:

After transmitting the RRC connection request message, the RRC connection setup message is monitored in consecutive downlink subframes.

In an implementation manner of the application, the RRC connection setup message carries data content to be transmitted.

Embodiment 5

Based on the same technical concept of the foregoing embodiment, referring to FIG. 7, a network device 70 is provided. The network element device 70 includes: a second network interface 701, a second memory 702, and a second Processor 703; the various components are coupled together by a bus system 704. It will be appreciated that the bus system 704 is configured to enable connection communication between these components. In addition to the data bus, bus system 704 includes a power bus, a control bus, and a status signal bus. However, for clarity of description, various buses are labeled as bus system 704 in FIG. among them,

The second network interface 701 is configured to receive and send signals during the process of transmitting and receiving information with other external network elements.

a second memory 702 configured to store a computer program executable on the second processor 703;

The second processor 703 is configured to execute when the computer program is executed:

When a connection needs to be established with the idle IDLE state user equipment UE, the paging message is sent to the UE through the downlink subframe;

Receiving an RRC connection request message sent by the UE;

And transmitting an RRC connection setup message to the UE for the RRC connection request message.

It can be understood that the second memory 702 in the embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory may be a read-only memory (ROM), a programmable read only memory (PROM), an erasable programmable read only memory (Erasable PROM, EPROM), or an electric Erase programmable read only memory (EEPROM) or flash memory. The volatile memory can be a Random Access Memory (RAM) that acts as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (Synchronous DRAM). SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM), Enhanced Synchronous Dynamic Random Access Memory (ESDRAM), Synchronous Connection Dynamic Random Access Memory (SDRAM) And direct memory bus random access memory (DRRAM). The second memory 702 of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

The second processor 703 may be an integrated circuit chip with signal processing capability. In the implementation process, each step of the foregoing method may be completed by an integrated logic circuit of hardware in the second processor 703 or an instruction in a form of software. The second processor 703 may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), or a field programmable gate array (FPGA). Or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general purpose processor may be a microprocessor or the processor or any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor. The software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like. The storage medium is located in the second memory 702, and the second processor 703 reads the information in the second memory 702 and completes the steps of the above method in combination with the hardware thereof.

It will be appreciated that the embodiments described herein can be implemented in hardware, software, firmware, middleware, microcode, or a combination thereof. For hardware implementation, the processing unit can be implemented in one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processing (DSP), Digital Signal Processing Equipment (DSP Device, DSPD), programmable Programmable Logic Device (PLD), Field-Programmable Gate Array (FPGA), general purpose processor, controller, microcontroller, microprocessor, other for performing the functions described herein In an electronic unit or a combination thereof.

For a software implementation, the techniques described herein can be implemented by modules (eg, procedures, functions, and so on) that perform the functions described herein. The software code can be stored in memory and executed by the processor. The memory can be implemented in the processor or external to the processor.

In an embodiment of the present application, the second processor 703 is further configured to: when the computer program is executed, execute:

After the UE enters the IDLE state, receiving capability indication information sent by the UE, where the capability indication information is used to represent that the UE is in the IDLE state, and has a monitoring on each downlink subframe. The ability to call a message.

In an embodiment of the present application, the second processor 703 is further configured to: when the computer program is executed, execute:

And placing, in the physical downlink control channel PDCCH of the downlink subframe, downlink control information DCI that is scrambled by the paging radio network temporary identifier P-RNTI, where the DCI includes an identifier of the UE and an uplink resource grant DCI; The uplink resource grant DCI includes radio resources required by the UE to send an RRC Connection Request message.

In an implementation manner of the application, the RRC connection setup message carries data content to be transmitted.

In addition, the components in this embodiment may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software function module.

The integrated unit may be stored in a computer readable storage medium if it is implemented in the form of a software function module and is not sold or used as a stand-alone product. Based on such understanding, the technical solution of the embodiment is essentially Said that the part contributing to the prior art or all or part of the technical solution can be embodied in the form of a software product stored in a storage medium, comprising a plurality of instructions for making a computer device (may It is a personal computer, a server, or a network device, etc. or a processor that performs all or part of the steps of the method described in this embodiment. The foregoing storage medium includes: a U disk, a mobile hard disk, a read only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes.

Accordingly, the present embodiment provides a computer readable storage medium having stored thereon a computer program that, when executed by a processor, executes:

When a connection needs to be established with the idle IDLE state user equipment UE, the paging message is sent to the UE through the downlink subframe;

Receiving an RRC connection request message sent by the UE;

And transmitting an RRC connection setup message to the UE for the RRC connection request message.

In an embodiment of the present application, when the computer program is executed by the processor, the method further includes: after the UE enters an IDLE state, receiving capability indication information sent by the UE, where the capability indication information is used for characterization In the case of the IDLE state, the UE has the ability to listen to paging messages on each downlink subframe.

In an embodiment of the present application, when the computer program is executed by the processor, performing: placing, on the physical downlink control channel PDCCH of the downlink subframe, downlink control information DCI scrambled by the paging radio network temporary identifier P-RNTI The DCI includes an identifier of the UE and an uplink resource grant DCI; the uplink resource grant DCI includes a radio resource required by the UE to send an RRC connection request message.

In an implementation manner of the application, the RRC connection setup message carries data content to be transmitted.

Embodiment 6

Based on the same technical concept of the foregoing embodiment, referring to FIG. 8 , a system 80 for establishing a communication link according to an embodiment of the present application is provided, where the system 80 includes a user equipment UE 60 and a network device on the network side. 70; among them,

The UE 60, configured to enter the idle IDLE state, buffers the RRC connection request message in advance, and monitors the paging message in each downlink subframe.

And determining, when the target UE 60 indicated by the paging message includes the UE 60 itself, sending a pre-cached RRC connection request message to the network side;

And receiving an RRC connection setup message for the RRC connection request message;

And establishing an RRC connection according to the RRC connection setup message;

The network device 70 is configured to send a paging message to the UE 60 through a downlink subframe when a connection with the idle IDLE state user equipment UE 60 needs to be established;

Receiving an RRC connection request message sent by the UE 60;

An RRC Connection Setup message is sent to the UE 60 for the RRC Connection Request message.

Those skilled in the art will appreciate that embodiments of the present application can be provided as a method, system, or computer program product. Accordingly, the application can take the form of a hardware embodiment, a software embodiment, or an embodiment in combination with software and hardware. Moreover, the application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) including computer usable program code.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the present application. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

The above is only the preferred embodiment of the present application and is not intended to limit the scope of the present application.

Industrial applicability

In the embodiment of the present application, when the UE is in the IDLE state, the existing DRX configuration information is ignored, and it is not necessary to wake up and listen to the paging message when the DRX cycle arrives, but to listen to the paging message in each downlink subframe, thereby When the side needs to establish a connection and deliver information, the paging message can be sent without waiting for the duration of a DRX cycle. The connection can be established and the information can be transmitted at any time as needed, thereby reducing the idle idle state terminal transition to the active connection state. Delay.

Claims (15)

A method for establishing a communication link, the method being applied to a user equipment UE, the method comprising: After entering the idle IDLE state, the paging message is monitored on each downlink subframe. Determining, when the target UE indicated by the paging message includes the UE itself, sending a pre-cached RRC connection request message to the network side; Receiving an RRC Connection Setup message for the RRC Connection Request message; Establishing an RRC connection according to the RRC Connection Setup message. The method of claim 1 wherein the method further comprises: After entering the idle IDLE state, the existing DRX configuration information is ignored. The method of claim 1 wherein the method further comprises: After entering the IDLE state, the capability indication information is sent to the network side, and the capability indication information is used to indicate that the UE has the capability of listening to the paging message on each downlink subframe in the case of the IDLE state. The method of claim 1, wherein the paging message is monitored on each of the downlink subframes, including: The physical downlink control channel PDCCH of each downlink subframe monitors whether there is downlink control information DCI for paging radio network temporary identifier P-RNTI scrambling; Decoding the DCI and querying whether the ID of the UE itself is included in the decoded DCI when the PCI is scrambled by the P-RNTI; When the ID of the UE itself is included in the decoded DCI, it is determined that the target UE indicated by the paging message includes the UE itself. The method according to claim 4, wherein, when determining that the target UE indicated by the paging message includes the UE itself, sending a pre-cached RRC connection request message to the network side, including: Determining that the target UE indicated by the paging message includes the UE itself, and continues to decode the DCI to obtain uplink authorization information; And transmitting, according to the radio resource indicated by the uplink authorization information, the pre-cached RRC connection setup request message to the network side. The method of claim 1, wherein the receiving an RRC Connection Setup message for the RRC Connection Request message comprises: After transmitting the RRC connection request message, the UE monitors the RRC connection setup message in each downlink subframe. The method of claim 1, wherein the RRC Connection Setup message carries data content to be transmitted. A method of establishing a communication link, the method comprising: When a connection needs to be established with the idle IDLE state user equipment UE, the paging message is sent to the UE through the downlink subframe; Receiving an RRC connection request message sent by the UE; And transmitting an RRC connection setup message to the UE for the RRC connection request message. The method of claim 8 wherein the method further comprises: After the UE enters the IDLE state, receiving capability indication information sent by the UE, where the capability indication information is used to represent that the UE is in the IDLE state, and has a monitoring on each downlink subframe. The ability to call a message. The method of claim 8, wherein the sending the paging message to the UE by using a downlink subframe comprises: And placing, in the physical downlink control channel PDCCH of the downlink subframe, downlink control information DCI that is scrambled by the paging radio network temporary identifier P-RNTI, where the DCI includes an identifier of the UE and an uplink resource grant DCI; The uplink resource grant DCI includes radio resources required by the UE to send an RRC Connection Request message. The method of claim 8, wherein the RRC Connection Setup message carries data content to be transmitted. A user equipment UE, the UE includes: a first network interface, a first memory, and a first processor; wherein The first network interface is configured to receive and send signals during the process of transmitting and receiving information with other external network elements; The first memory is configured to store a computer program capable of running on the first processor; The first processor is configured to perform the steps of the method of any one of claims 1 to 7 when the computer program is run. A network device, the network device comprising: a second network interface, a second memory, and a second processor; The second network interface is configured to receive and send signals during the process of transmitting and receiving information with other external network elements. The second memory is configured to store a computer program capable of running on the second processor; The second processor is configured to perform the steps of the method of any one of claims 8 to 11 when the computer program is run. A system for establishing a communication link, the system comprising a user equipment UE and a network device on the network side; After the UE is configured to enter the idle IDLE state, the RRC connection request message is buffered in advance, and the paging message is monitored on each downlink subframe. And determining, when the target UE indicated by the paging message includes the UE itself, sending a buffered RRC connection request message to the network side; And receiving an RRC connection setup message for the RRC connection request message; And establishing an RRC connection according to the RRC connection setup message; The network device is configured to send a paging message to the UE by using a downlink subframe when a connection is established with the user equipment UE in the idle IDLE state; Receiving an RRC connection request message sent by the UE; And transmitting an RRC connection setup message to the UE for the RRC connection request message. A storage medium comprising a stored computer program, wherein the computer program is operative to perform the method of any of the preceding claims 1-7, 8-11.

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