CN112804706B - Communication link detection method and device - Google Patents
Communication link detection method and device Download PDFInfo
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- CN112804706B CN112804706B CN202011624834.1A CN202011624834A CN112804706B CN 112804706 B CN112804706 B CN 112804706B CN 202011624834 A CN202011624834 A CN 202011624834A CN 112804706 B CN112804706 B CN 112804706B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/08—Testing, supervising or monitoring using real traffic
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
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Abstract
The invention discloses a communication link connection detection method and a device, when a first judgment result determined according to feedback information of a detected terminal responding to a creation instruction of radio resource control shows that the terminal and a base station have established connection, DCI information used for indicating uplink scheduling is sent to the terminal through a second type channel, the terminal is authorized to send uplink information to the base station through the second type channel, downlink DCI information is sent to the terminal through the first type channel, then a second judgment result is determined according to the detected uplink information, and the connection state of the terminal and the base station is determined based on the second judgment result. Therefore, even if the base station misinterprets NACK of the RRCSetup as ACK, the error can be quickly identified and corrected, the resource waste of the base station is effectively reduced, meanwhile, new RRCSetup retransmission can be quickly initiated, and the access delay brought by the base station under the condition that NACK information is misjudged is obviously reduced.
Description
Technical Field
The present invention relates to the field of wireless communication technologies, and in particular, to a method and an apparatus for detecting a communication link.
Background
In an access process of a UE (User Equipment) entering a connected state from an access mode, an ENB (Evolved Node B, Evolved base station) sends DCI (Digital rights Identifier) of MSG4 through a public space in an initial access process 02 of the UE, and after the UE receives a rrc setup message of MSG4, the ENB authorizes the UE to monitor a PDCCH (Physical Downlink Control Channel) DCI through a dedicated space.
Currently, after receiving ACK (acknowledgement character) feedback including rrcSetup MSG4 (RRC establishment or reestablishment command sent by ENB to UE), ENB determines that the UE random access procedure is finished, and switches the UE to a connected mode for scheduling. However, since the PUCCH (Physical Uplink Control Channel) has a certain false detection probability, if the ENB erroneously demodulates NACK of HARQ (Hybrid Automatic Repeat Request) sent by the UE into ACK, the ENB does not resend the rrcSetup message of the MSG4 to the UE, and the ENB will be in a state of waiting for an MSG5 (rrcSetup message in the connection establishment procedure between the UE and the ENB), and will switch subsequent scheduling for the UE to the dedicated space. And the UE stays in the DCI monitoring state in the common space, and continues to wait for the rrcSetup message in the common space, which results in a prolonged access delay of the UE. In addition, the ENB will schedule the rrcSetup message in the private space and re-issue the message after the monitoring timer of the CU (Centralized Unit) expires, and at this time, the UE still stays in the public space to perform DCI monitoring, and cannot receive the rrcSetup message issued by the ENB, which causes resource waste.
Disclosure of Invention
Embodiments of the present invention provide a method, an apparatus, and a computer-readable storage medium for connecting a communication link in order to solve the above-mentioned problems in the connection process of the communication link.
According to a first aspect of the present invention, there is provided a communication link connection detection method, the method comprising: detecting feedback information of a terminal responding to a creation instruction of radio resource control; determining a first judgment result according to the feedback information; if the first judgment result shows that the terminal and the base station are connected, transmitting DCI information for indicating uplink scheduling to the terminal through a second type channel so as to authorize the terminal to transmit the uplink information to the base station through the second type channel and keep transmitting downlink DCI information to the terminal through a first type channel; determining a second judgment result according to the received uplink information; and determining the connection state of the terminal and the base station based on the second judgment result.
According to an embodiment of the present invention, if the first determination result shows that the terminal and the base station have established a connection, sending DCI information for indicating uplink scheduling to the terminal through a second type channel to authorize the terminal to send uplink information to the base station through the second type channel, includes: and sending DCI information for indicating uplink scheduling to the terminal through the first type channel within a transmission interval time TTI of a set number of times after the first judgment result shows that the terminal and the base station establish connection, so as to authorize the terminal to send the uplink information through the second type channel.
According to an embodiment of the present invention, the creating instruction of the radio resource control is an MSG4 message of a radio resource control request instruction rrcSetup, and accordingly, the feedback information of the detecting terminal in response to the creating instruction of the radio resource control includes: transmitting an MSG4 message including a radio resource control request instruction rrcSetup to the terminal; detecting feedback information sent by the terminal through a Physical Uplink Control Channel (PUCCH) in response to the MSG4 message.
According to an embodiment of the present invention, the determining a first determination result according to the feedback information includes: analyzing the feedback information, and when the feedback information obtained by analyzing is a hybrid automatic repeat request (HARQ), determining that the first judgment result shows that the connection between the terminal and the base station fails; and when the feedback information obtained by analysis is an acknowledgement character ACK, determining that the first judgment result shows that the connection between the terminal and the base station is established.
According to an embodiment of the present invention, before determining the second determination result according to the received uplink information, the method further includes: and detecting uplink information sent by the terminal through a Physical Uplink Shared Channel (PUSCH) in the second type channel.
According to an embodiment of the present invention, the determining a second determination result according to the received uplink information and determining a connection status between the terminal and the base station based on the second determination result includes: decoding the uplink information to obtain a decoding result; when the decoding result is that the probability of the discontinuous transmission mode DTX reaches a set threshold value, determining that the second judgment result shows that the connection between the terminal and the base station fails; otherwise, determining that the second judgment result shows that the terminal and the base station are connected.
According to an embodiment of the invention, the method further comprises: and after determining that the connection between the terminal and the base station fails, retransmitting the creation instruction of the radio resource control to the terminal.
According to an embodiment of the invention, the method further comprises: and after the connection between the terminal and the base station is determined, performing uplink and downlink communication between the terminal and the base station through the second type channel.
According to an embodiment of the present invention, the first type of channel is a public space channel, and the second type of channel is a private space channel.
According to a second aspect of the present invention, there is also provided a communication link connection detection apparatus, the apparatus comprising: the detection module is used for detecting feedback information of the terminal responding to a creation instruction of the radio resource control; the first judgment module is used for determining a first judgment result according to the feedback information; a channel switching module, configured to send DCI information for indicating uplink scheduling to the terminal through a second type channel if it is determined that the first determination result shows that the terminal and the base station have established connection, so as to authorize the terminal to send uplink information to the base station through the second type channel, and keep sending downlink DCI information to the terminal through the first type channel; the second judgment module is used for determining a second judgment result according to the received uplink information; and a connection state determining module, configured to determine a connection state between the terminal and the base station based on the second determination result.
According to a third aspect of the present invention, there is also provided a computer-readable storage medium comprising a set of computer-executable instructions which, when executed, are operable to perform any of the communication link connection detection methods described above.
When a first judgment result determined according to feedback information of a detected terminal in response to a creation instruction of radio resource control shows that the terminal and the base station have established connection, the DCI information for indicating uplink scheduling is sent to the terminal through a second type channel to authorize the terminal to send uplink information to the base station through the second type channel, a second judgment result is determined according to the detected uplink information, and a connection state between the terminal and the base station is determined based on the second judgment result. Therefore, even if the base station misinterprets NACK of the RRCSetup as ACK, the error can be quickly identified and corrected, the resource waste of the base station is effectively reduced, meanwhile, new RRCSetup retransmission can be quickly initiated, and the access delay brought by the base station under the condition that NACK information is misjudged is obviously reduced.
It is to be understood that the teachings of the present invention need not achieve all of the above-described benefits, but that certain embodiments may achieve certain technical benefits and other embodiments of the invention may achieve benefits not mentioned above.
Drawings
The above and other objects, features and advantages of exemplary embodiments of the present invention will become readily apparent from the following detailed description, which proceeds with reference to the accompanying drawings. Several embodiments of the present invention are illustrated by way of example, and not by way of limitation, in the figures of the accompanying drawings and in which:
in the drawings, like or corresponding reference characters designate like or corresponding parts.
Fig. 1 is a schematic diagram illustrating an application scenario of a communication link detection method according to an embodiment of the present invention;
fig. 2 is a schematic flow chart illustrating an implementation of the communication link detection method according to an embodiment of the present invention;
fig. 3 is a flowchart illustrating an implementation example of a specific application of the communication link detection method according to the embodiment of the present invention;
fig. 4 is a schematic diagram illustrating a configuration of a communication link detection apparatus according to an embodiment of the present invention.
Detailed Description
The principles and spirit of the present invention will be described with reference to several exemplary embodiments. It is understood that these embodiments are given only to enable those skilled in the art to better understand and to implement the present invention, and do not limit the scope of the present invention in any way. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
The technical solution of the present invention is further elaborated below with reference to the drawings and the specific embodiments.
Fig. 1 shows a schematic view of an application scenario of a communication link detection method according to an embodiment of the present invention.
Referring to fig. 1, in the current process of establishing a connection between a terminal and a base station, a UE (User Equipment, terminal) requesting to access the base station to establish a connection between the UE and the base station may include the following four steps of operations 101 to 104, where after the base station sends Msg4 information including RRCSetup to the UE and detects an ACK (Acknowledge character) sent by the terminal in response to the Msg4 information, it is determined that the UE is successfully connected, and enters a connection mode, and the terminal is switched to a dedicated spatial channel for communication. To avoid problems caused by the base station misdetecting information received through an Uplink PUCCH (Physical Uplink Control Channel), for example: HARQ (Hybrid Automatic Repeat Request) received from the UE is erroneously detected as ACK. In the communication link detection method of the embodiment of the invention, after the base station sends the Msg4 to the UE and before the UE returns the Msg5 to the base station, when feedback information sent by the terminal responding to the Msg4 message is received, if the message is detected to be ACK, the UE is switched to a connection mode transition state, and the access condition of the UE is further verified, so that the successful access of the UE is ensured, and the UE is really connected with the base station. Specifically, the method comprises the following steps:
in operation 101, the UE sends Msg1 to the base station, which is a process of open-loop power control, UE gradually boosting power probe.
In operation 102, the ENB returns Msg2 to the UE, which means that the ENB (Evolved Node B, enodeb) receives the M sg1 at a certain time and replies a response to the UE.
In operation 103, the UE sends Msg3 (RRCConnectSetupReq, RRC setup request or reestablishment request) to the base station, which refers to the RRC setup request or reestablishment request sent by the UE to the base station.
At operation 104, the base station sends Msg4 to the UE, which may include a contention resolution identity & RRCSetup, for example: and the base station sends an RRC establishment or reconstruction instruction RRCSetUp to the UE.
In operation 105, the UE sends to the base station an RRC setup or reestablishment completion acknowledgement message ACK or a request reestablishment message HARQ in response to the Msg4 message. If the message detected by the base station is that Msg4 sent by the UE is ACK, operation 106 is continued.
In operation 106, the base station sends DCI information indicating uplink scheduling to the UE through the dedicated space, so as to authorize the terminal to send uplink information to the base station through the second type channel.
Fig. 2 is a schematic flow chart illustrating an implementation of the communication link detection method according to an embodiment of the present invention;
referring to fig. 2, the communication link detection method according to the embodiment of the present invention at least includes the following operation flows: operation 201, detecting feedback information of a terminal responding to a creation instruction of radio resource control; operation 202, determining a first determination result according to the feedback information; operation 203, if the first determination result shows that the terminal and the base station have established connection, sending DCI information for indicating uplink scheduling to the terminal through the second type channel, so as to authorize the terminal to send uplink information to the base station through the second type channel, and maintaining sending downlink DCI information to the terminal through the first type channel; operation 204, determining a second judgment result according to the received uplink information; in operation 205, a connection state of the terminal and the base station is determined based on the second determination result.
In operation 201, feedback information of a terminal in response to a creation instruction of radio resource control is detected.
In an embodiment of the present invention, the creating instruction of the rrc is an MSG4 message of the rrc request instruction RRCSetup, and accordingly, the detecting of the feedback information of the terminal responding to the creating instruction of the rrc request can be implemented by: the MSG4 message including a radio resource control request command RRCSetup is transmitted to the terminal, and feedback information in response to the MSG4 message transmitted by the terminal through a physical uplink control channel PUCCH is detected.
For example, referring back to operation 104 above, the base station sending Msg4 to the UE may include a contention resolution identity & RRCSetup, such as: and the base station sends an RRC establishment or reconstruction instruction RRCSetUp to the UE. The UE, upon receiving this Msg4, will send feedback information to the base station in response to Msg 4.
The feedback information may be a hybrid automatic repeat request HARQ that the terminal requests the base station to retransmit, or an acknowledgement character ACK that acknowledges the reception of the Msg4 message sent by the base station.
In operation 202, a first determination result is determined according to the feedback information.
In an embodiment of the present invention, the following operation steps are adopted to determine the first determination result according to the feedback information: and analyzing the feedback information, determining that the first judgment result shows that the connection between the terminal and the base station fails when the feedback information obtained by analysis is hybrid automatic repeat request (HARQ), and determining that the first judgment result shows that the connection between the terminal and the base station is established when the feedback information obtained by analysis is an Acknowledgement Character (ACK).
Specifically, in HARQ, when the receiving side fails to decode, the receiving side stores received data and requests the transmitting side to retransmit the data, and the receiving side combines the retransmitted data with previously received data and then decodes the data. For example, if the terminal fails to decode the Msg4 message received by the terminal and cannot establish a connection with the base station, the terminal sends HARQ to the base station to request the base station to retransmit the Msg 4. If the terminal successfully decodes the Msg4 information received by the terminal, the terminal can establish connection with the base station according to the analyzed information and send an ACK to the base station, which indicates that the terminal is successfully connected with the base station.
However, since the base station is liable to erroneously detect the HARQ received from the UE as ACK, the first determination result is not used as a basis for determining the final connection state between the terminal and the base station in the present invention. When the first determination result shows that the terminal and the base station have established connection, the following operations 203 to 205 are performed to further determine the connection status of the terminal and the base station.
In operation 203, if the first determination result shows that the terminal and the base station have established a connection, DCI information for indicating uplink scheduling is sent to the terminal through the second type of channel, so as to authorize the terminal to send the uplink information to the base station through the second type of channel, and keep sending the downlink DCI information to the terminal through the first type of channel.
In one embodiment of the present invention, the first type of channel is a public space channel and the second type of channel is a private space channel.
For example, if the first determination result shows that the terminal and the base station have established a connection, if the base station analyzes the feedback information of the detected terminal in response to the creation instruction of the radio resource control, which indicates that the terminal and the base station have established a connection, in this case, in order to confirm that the terminal and the base station have established a connection again, the uplink data is authorized to be switched to the dedicated spatial channel for transmission. Meanwhile, in order to avoid the problem caused by false detection of the Msg4 sent by the terminal by the base station, the resource and time waste caused by frequent switching of the public space and the private space of the tunnel for sending information to the terminal by the base station is reduced, the terminal can be ensured to normally receive the downlink DCI information sent by the base station, and at the moment, the downlink DCI information is kept to be sent to the terminal through the public space tunnel. Sending DCI information indicating uplink scheduling only through a dedicated spatial channel to detect whether the terminal reliably receives the Msg4 including the RRCSetup message. Sending DCI information indicating uplink scheduling to the terminal through a dedicated spatial tunnel is an operation step specially set for probing whether the terminal reliably receives Msg4 including an RRCSetup message.
Here, unlike the prior art, once ACK information sent by the terminal in response to the Msg4 information is detected, both the uplink DCI and the downlink DCI information are switched to the dedicated spatial channel, and the base station enters a state of waiting for the Msg5 information sent by the terminal through the dedicated spatial channel without actively sending information to the terminal.
The method and the device are used for further verifying whether the terminal successfully receives the Msg4 message including RRCSetup by actively sending the specially-set DCI to the terminal, and switching to a special space channel to send the uplink information. Therefore, the problems caused by the false detection of the base station on the message received from the terminal are effectively avoided, such as: and if the HARQ is falsely detected as ACK, the terminal does not successfully receive the Msg4 message including the RRCSetup sent by the base station, cannot receive the uplink DCI sent by the base station through the special space, and cannot switch to the special space to send the uplink information. The occurrence of the situation of resource waste is obviously reduced. Meanwhile, the base station keeps a channel for sending the downlink DCI information through the public space before further verifying the access state of the terminal, so that once the terminal is verified to be not connected with the base station, the Msg4 message comprising the RRCSetup can be quickly sent to the terminal again through the public space. The efficiency of establishing connection between the terminal and the base station is effectively improved, and the user experience is improved.
If the terminal and the base station do establish connection, the terminal will normally transmit uplink information through the special spatial channel. The dedicated spatial channel comprises a dedicated physical uplink shared channel, PUSCH.
In operation 204 to operation 205, a second determination result is determined according to the received uplink information; and determining the connection state of the terminal and the base station based on the second judgment result.
In an embodiment of the present invention, before determining the second determination result according to the received uplink information, the method further includes: and detecting the uplink information sent by the terminal through a Physical Uplink Shared Channel (PUSCH) in the second type channel.
In an embodiment of the present invention, determining a second determination result according to received uplink information, and determining a connection state between a terminal and a base station based on the second determination result includes: decoding the uplink information to obtain a decoding result; when the decoding result is that the probability of the discontinuous transmission mode DTX reaches a set threshold value, determining that a second judgment result shows that the connection between the terminal and the base station fails; otherwise, determining that the second judgment result shows that the terminal and the base station are connected.
For example, the base station detects the uplink information sent by the terminal through the physical uplink shared channel PUSCH in the second type channel, and if the base station can normally perform CRC (Cyclic Redundancy Check) decoding on the uplink information, whether the decoding result is that the CRC is correct or the CRC fails indicates that the base station can detect the DCI information sent by the terminal through the dedicated spatial channel. Indicating that the terminal and the base station are indeed connected successfully.
If the decoding result of the base station on the uplink information is Discontinuous Transmission Mode (DTX), it indicates that the base station fails to detect DCI information transmitted by the terminal from a dedicated spatial channel authorized to the terminal. In order to ensure the DCI processing time of the terminal, it may be set that when the probability that the decoding result of decoding the uplink information detected within the set time is DTX reaches a set threshold, it is determined that the connection between the terminal and the base station has failed. For example, in a TTI (Transmission Time Interval) Time set by the base station after transmitting DCI scheduling information to the terminal, if all uplink information decoding results of the base station are discontinuous Transmission mode DTX, it indicates that the connection between the terminal and the base station fails.
In one embodiment of the present invention, the creation instruction of the radio resource control is also retransmitted to the terminal after it is determined that the connection between the terminal and the base station has failed.
In an embodiment of the present invention, after it is determined that the terminal and the base station have established a connection, uplink and downlink communication is performed between the terminal and the base station through the second type channel.
Fig. 3 is a schematic implementation flow diagram of a specific application example of the communication link detection method according to the embodiment of the present invention. As shown in fig. 3, a specific application example of the communication link detection method according to the embodiment of the present invention at least includes:
in operation 301, Msg4 is sent. The base station sends an Msg4 message to the terminal.
In operation 302, the receiving terminal responds to the feedback information of Msg 4. The base station receives feedback information sent by the terminal corresponding to Msg4, for example: HARQ and ACK.
In operation 303-operation 306, the terminal enters a connection mode transition state, switches the uplink DCI to be sent through the dedicated space, delays N TTIs, ensures the Msg4 processing time of the terminal, sends uplink DCI scheduling through the dedicated space tunnel, and the base station receives the uplink information sent by the terminal through the PUSCH.
The specific implementation processes of operations 303 to 306 are similar to the specific implementation process of operation 203 in the embodiment shown in fig. 2, and are not described again here.
In operation 307, a PUSCH decoding result is determined. If the decoding result is correct or incorrect, then operation 308 is performed; if all the PUSCH decoding results within the HARQ retransmission times are DTX, operation 301 is returned to.
At operation 308, it is determined that the terminal may enter a connected mode.
The specific implementation processes of operations 307 to 308 are similar to the specific implementation processes of operations 204 to 205 in the embodiment shown in fig. 2, and are not described herein again.
According to the communication link connection detection method, the communication link connection detection device and the computer readable storage medium, when a first judgment result determined according to feedback information of a detected terminal responding to a creation instruction of radio resource control shows that the terminal and a base station are connected, an authorized terminal is added to send uplink information to the base station through a second type channel; and meanwhile, DCI information used for indicating uplink scheduling is sent to the terminal through the first type channel, a second judgment result is determined according to the detected uplink information, and the connection state of the terminal and the base station is determined based on the second judgment result. Therefore, even if the base station misinterprets NACK of the RRCSetup as ACK, the error can be quickly identified and corrected, the resource waste of the base station is effectively reduced, meanwhile, new RRCSetup retransmission can be quickly initiated, and the access delay brought by the base station under the condition that NACK information is misjudged is obviously reduced.
Similarly, based on the above communication link connection detection method, an embodiment of the present invention further provides a computer-readable storage medium, where a program is stored, and when the program is executed by a processor, the processor is caused to perform at least the following operation steps: operation 201, detecting feedback information of a terminal responding to a creation instruction of radio resource control; operation 202, determining a first determination result according to the feedback information; operation 203, if the first determination result shows that the terminal and the base station have established connection, sending DCI information for indicating uplink scheduling to the terminal through the second type channel, so as to authorize the terminal to send uplink information to the base station through the second type channel, and maintaining sending downlink DCI information to the terminal through the first type channel; operation 204, determining a second judgment result according to the received uplink information; in operation 205, a connection state of the terminal and the base station is determined based on the second determination result.
Further, based on the above communication link connection detection method, an embodiment of the present invention further provides a communication link detection apparatus, as shown in fig. 4, where the apparatus 40 includes: a detecting module 401, configured to detect feedback information of a terminal responding to a creation instruction of radio resource control; a first determining module 402, configured to determine a first determining result according to the feedback information; a channel switching module 403, configured to send, if it is determined that the first determination result shows that the terminal and the base station have established connection, DCI information for indicating uplink scheduling to the terminal through the second type channel, so as to authorize the terminal to send the uplink information to the base station through the second type channel, and keep sending downlink DCI information to the terminal through the first type channel; a second determining module 404, configured to determine a second determining result according to the received uplink information; a connection status determining module 405, configured to determine a connection status between the terminal and the base station based on the second determination result.
According to an embodiment of the present invention, the channel switching module 403 includes: and the transition submodule is used for sending DCI information used for indicating uplink scheduling to the terminal through the first type channel in a transmission interval time TTI with a set number of times after the first judgment result shows that the terminal and the base station are connected, so as to authorize the terminal to send the uplink information through the second type channel base station.
According to an embodiment of the present invention, the rrc creation command is an MSG4 message of an rrc request command rrcSetup, and the detecting module 401 includes: a transmission submodule for transmitting an MSG4 message including a radio resource control request command rrcSetup to a terminal; and the detection submodule is used for detecting the feedback information which is sent by the terminal through a Physical Uplink Control Channel (PUCCH) and responds to the MSG4 message.
According to an embodiment of the present invention, the first determining module 402 includes: the first analysis submodule is used for analyzing the feedback information and determining that a first judgment result shows that the connection between the terminal and the base station fails when the feedback information obtained by analysis is a hybrid automatic repeat request (HARQ); and the second analysis submodule is used for determining that the first judgment result shows that the connection between the terminal and the base station is established when the feedback information obtained by analysis is the acknowledgement character ACK.
According to an embodiment of the present invention, the apparatus 40 further comprises: and the uplink information detection module is used for detecting the uplink information sent by the terminal through a Physical Uplink Shared Channel (PUSCH) in the second type channel before determining a second judgment result according to the received uplink information.
According to an embodiment of the present invention, the second determining module 404 includes: the decoding submodule is used for decoding the uplink information to obtain a decoding result; correspondingly, the connection status determining module 405 includes a determining sub-module, configured to determine that the second determination result shows that the connection between the terminal and the base station fails when the decoding result indicates that the probability of the discontinuous transmission mode DTX reaches the set threshold, and otherwise, determine that the second determination result shows that the connection between the terminal and the base station is established.
According to an embodiment of the present invention, the apparatus 40 further comprises: and the reconnection module is used for retransmitting a creation instruction of the radio resource control to the terminal after determining that the connection between the terminal and the base station fails.
According to an embodiment of the present invention, the apparatus 40 further comprises: and the connection module is used for carrying out uplink and downlink communication with the terminal through the second type channel after the connection between the terminal and the base station is determined.
According to an embodiment of the invention, the first type of channel is a public space channel and the second type of channel is a private space channel.
It is to be noted here that: the above description of the embodiment of the communication link detection apparatus is similar to the description of the method embodiment shown in fig. 1 to 3, and has similar beneficial effects to the method embodiment shown in fig. 1 to 3, and therefore, the description thereof is omitted. For technical details not disclosed in the embodiment of the communication link detection apparatus of the present invention, please refer to the description of the method embodiments shown in fig. 1 to 3 for understanding, and therefore will not be described again for brevity.
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 identified by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described device embodiments are merely illustrative, for example, the division of a unit is only one logical function division, and there may be other division ways in actual implementation, such as: multiple units or components may be combined, or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the coupling, direct coupling or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection between the devices or units may be electrical, mechanical or other forms.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units; can be located in one place or distributed on a plurality of network units; some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, all the functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be separately regarded as one unit, or two or more units may be integrated into one unit; the integrated unit may be implemented in the form of hardware, or in the form of hardware plus a software functional unit.
Those of ordinary skill in the art will understand that: all or part of the steps of implementing the method embodiments may be implemented by hardware related to program instructions, and the program may be stored in a computer-readable storage medium, and when executed, executes the steps including the method embodiments; and the aforementioned storage medium includes: various media that can store program codes, such as a removable Memory device, a Read Only Memory (ROM), a magnetic disk, or an optical disk.
Alternatively, the integrated unit of the present invention may be stored in a computer-readable storage medium if it is implemented in the form of a software functional module and sold or used as a separate product. Based on such understanding, the technical solutions of the embodiments of the present invention or portions thereof contributing to the prior art may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions to enable a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the methods of the embodiments of the present invention. And the aforementioned storage medium includes: various media that can store program code, such as removable storage devices, ROMs, magnetic or optical disks, etc.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. A communication link connection detection method, the method comprising:
detecting feedback information of a terminal responding to a creation instruction of radio resource control;
determining a first judgment result according to the feedback information;
if the first judgment result shows that the terminal and the base station are connected, DCI information used for indicating uplink scheduling is sent to the terminal through a second type channel so as to authorize the terminal to send the uplink information to the base station through the second type channel and keep sending downlink DCI information to the terminal through a first type channel;
determining a second judgment result according to the received uplink information;
determining a connection state of the terminal and the base station based on the second determination result;
wherein the first type of channel is a public space channel and the second type of channel is a private space channel.
2. The method of claim 1, wherein if the first determination result shows that the terminal and the base station have established a connection, sending DCI information for indicating uplink scheduling to the terminal through a second type channel to authorize the terminal to send uplink information to the base station through the second type channel, includes:
and sending DCI information for indicating uplink scheduling to the terminal through the second type channel within a transmission interval time TTI of a set number of times after the first judgment result shows that the terminal and the base station establish connection, so as to authorize the terminal to send the uplink information through the second type channel.
3. The method of claim 1, wherein the creating instruction of the radio resource control is an MSG4 message of a radio resource control request instruction rrcSetup, and accordingly, the detecting terminal responds to feedback information of the creating instruction of the radio resource control, and comprises:
transmitting an MSG4 message including a radio resource control request instruction rrcSetup to the terminal;
detecting feedback information sent by the terminal through a Physical Uplink Control Channel (PUCCH) in response to the MSG4 message.
4. The method of claim 1, wherein determining a first determination result according to the feedback information comprises:
analyzing the feedback information, and when the feedback information obtained by analyzing is a hybrid automatic repeat request (HARQ), determining that the first judgment result shows that the connection between the terminal and the base station fails;
and when the feedback information obtained by analysis is an acknowledgement character ACK, determining that the first judgment result shows that the connection between the terminal and the base station is established.
5. The method of claim 1, wherein before determining the second determination result according to the received uplink information, the method further comprises:
and detecting uplink information sent by the terminal through a Physical Uplink Shared Channel (PUSCH) in the second type channel.
6. The method of claim 1, wherein the determining a second determination result according to the received uplink information, and determining a connection status between the terminal and the base station based on the second determination result comprises:
decoding the uplink information to obtain a decoding result;
when the probability that the decoding result is the discontinuous transmission mode (DTX) reaches a set threshold, determining that the second judgment result shows that the connection between the terminal and the base station fails;
otherwise, determining that the second judgment result shows that the terminal and the base station are connected.
7. The method of claim 6, further comprising:
and after determining that the connection between the terminal and the base station fails, retransmitting the creation instruction of the radio resource control to the terminal.
8. The method of claim 6, further comprising:
and after determining that the terminal and the base station are connected, performing uplink and downlink communication with the terminal through the second type channel.
9. A communication link connection detection apparatus, the apparatus comprising:
the detection module is used for detecting feedback information of the terminal responding to a creation instruction of the radio resource control;
the first judgment module is used for determining a first judgment result according to the feedback information;
a channel switching module, configured to send, if it is determined that the first determination result shows that the terminal and the base station have established connection, DCI information for indicating uplink scheduling to the terminal through a second type channel, so as to authorize the terminal to send uplink information to the base station through the second type channel, and keep sending downlink DCI information to the terminal through the first type channel;
the second judgment module is used for determining a second judgment result according to the received uplink information;
a connection status determining module, configured to determine a connection status between the terminal and the base station based on the second determination result;
wherein the first type channel is a public space channel and the second type channel is a private space channel.
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