CN106550317A - Individual calling method, device and system under a kind of broadband DMO - Google Patents
Individual calling method, device and system under a kind of broadband DMO Download PDFInfo
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- CN106550317A CN106550317A CN201510605342.0A CN201510605342A CN106550317A CN 106550317 A CN106550317 A CN 106550317A CN 201510605342 A CN201510605342 A CN 201510605342A CN 106550317 A CN106550317 A CN 106550317A
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- 238000004891 communication Methods 0.000 claims abstract description 100
- 230000005540 biological transmission Effects 0.000 claims abstract description 27
- 230000011664 signaling Effects 0.000 claims description 21
- 238000010586 diagram Methods 0.000 description 9
- 230000009471 action Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
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- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
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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
- H04L1/1809—Selective-repeat protocols
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Abstract
The embodiment of the invention discloses the individual calling method and system under a kind of broadband DMO, methods described includes：When first terminal receive calling terminal transmission carry first terminal mark PSCCH after, to determine and exhale terminal based on a calling terminal；The first terminal exhales terminal feedback to confirm ACK information to the master, to inform that the master exhales terminal connection establishment success；After the first terminal is properly received the PSSCH for carrying communication information that terminal is exhaled from the master, terminal feedback ACK information is exhaled to the master, to inform that the master exhales communication information described in terminal to receive successfully.The present invention can realize the end-to-end direction communication under the DMO of broadband.
Description
Technical Field
The invention relates to the technical field of LTE communication, in particular to a single call method, a single call device and a single call system under broadband DMO.
Background
LTE (Long Term Evolution) is a Long Term Evolution of The UMTS (Universal mobile telecommunications System) technical standard established by The 3GPP (The 3rd generation partnership Project) organization. An LTE broadband DMO (Direct Mode Operation ) is a Direct communication technology, and particularly, a technology for Direct communication between terminals without cellular network coverage.
In the off-line scene, the base station cannot participate in the unified scheduling of the terminal UE, so that there is a certain difficulty in communication among UEs.
Disclosure of Invention
In view of this, the present invention provides a single call method, apparatus and system under broadband DMO, which implement end-to-end direct communication under broadband DMO.
The invention provides a single calling method under broadband DMO, which comprises the following steps:
after receiving a PSCCH (primary paging channel) which is sent by a calling terminal and bears a first terminal identifier, a first terminal determines that one calling terminal is a calling terminal;
the first terminal feeds back Acknowledgement (ACK) information to the calling terminal to inform the calling terminal that the connection is successfully established;
and after the first terminal successfully receives the PSSCH which carries the communication information and is from the calling terminal, the first terminal feeds back ACK information to the calling terminal so as to inform the calling terminal that the communication information is successfully received.
Preferably, the method further comprises:
and when the first terminal fails to receive the PSSCH which carries the communication information and is from the calling terminal, feeding back Negative Acknowledgement (NACK) information to the calling terminal so as to inform the calling terminal that the communication information is failed to be received.
Preferably, after the first terminal receives the PSCCH carrying the first terminal identifier sent by the calling terminal, determining that one calling terminal is the calling terminal includes:
when the first terminal receives PSCCHs carrying a first terminal identity transmitted by a plurality of calling terminals,
determining a calling terminal corresponding to the PSCCH received firstly as a calling terminal;
or,
determining a calling terminal corresponding to PSCCH with the strongest signal as a calling terminal;
or,
and determining the calling terminal with the highest priority as the calling terminal according to the preset priority of the calling terminal.
Preferably, the method further comprises:
and when the first terminal receives PSCCH which is sent by a plurality of calling terminals and carries a first terminal identifier, sending private signaling to other calling terminals except the calling terminal, wherein the private signaling is used for rejecting the talk right.
Preferably, the method further comprises:
and the first terminal is continuously in a state of receiving the PSCCH when the data is not transmitted.
Preferably, the method further comprises:
when the first terminal determines that the calling terminal and other calling terminals occupy the same time frequency resource and the first terminal fails to receive the PSSCH carrying the communication information, the first terminal feeds back NACK information to the calling terminal so that the calling terminal selects other time frequency resources to resend the PSSCH carrying the communication information.
Preferably, the ACK information and the NACK information are carried in PSCCH or PSCCH and fed back to the primary call terminal.
The invention also provides a single calling method under the broadband DMO, which comprises the following steps:
the second terminal sends PSCCH carrying the identification of the called terminal to the called terminal;
after receiving Acknowledgement (ACK) information from the called terminal, the second terminal sends a PSSCH carrying communication information to the called terminal, wherein the ACK information is used for informing the second terminal that the connection establishment is successful;
and the second terminal receives ACK information from the called terminal, wherein the ACK information is used for informing the second terminal that the communication information is successfully received.
Preferably, the method further comprises:
and when the second terminal receives the Negative Acknowledgement (NACK) information from the called terminal, other time-frequency resources are selected to retransmit the PSSCH carrying the communication information.
Preferably, the method further comprises:
the second terminal calculates the error rate of the second terminal;
and adjusting the transmission rate and/or transmission power of the self-body according to the error rate.
The invention also provides a single-call device under the broadband DMO, which comprises:
the receiving module is used for receiving a physical side lobe control channel PSCCH which is sent by a calling terminal and carries a first terminal identification;
the determining module is used for determining that one calling terminal in the PSCCH carrying the first terminal identification is a calling terminal;
the first feedback module is used for feeding back Acknowledgement (ACK) information to the calling terminal so as to inform the calling terminal that the connection is successfully established;
and the second feedback module is used for feeding back ACK information to the calling terminal after successfully receiving a physical side lobe shared channel PSSCH which carries communication information and is from the calling terminal so as to inform the calling terminal that the communication information is successfully received.
Preferably, the apparatus further comprises:
and the third feedback module is used for feeding back Negative Acknowledgement (NACK) information to the calling terminal when receiving the PSSCH which carries the communication information and is from the calling terminal fails so as to inform the calling terminal that the communication information is failed to be received.
Preferably, the apparatus further comprises:
and the sending module is used for sending a private signaling to other calling terminals except the calling terminal when receiving the PSCCH which is sent by a plurality of calling terminals and bears the first terminal identification, wherein the private signaling is used for rejecting the speaking right.
The invention provides a single calling system under broadband DMO, which comprises a called terminal and a calling terminal,
the called terminal is used for receiving the PSCCH which is sent by the calling terminal and bears the identification of the called terminal; determining a calling terminal as a calling terminal; feeding back acknowledgement ACK information to the calling terminal to inform the calling terminal that the connection is successfully established;
the calling terminal as the calling terminal is used for sending PSSCH carrying communication information to the called terminal after receiving the ACK information;
and the called terminal is used for sending ACK information to the calling terminal when the PSSCH carrying the communication information is successfully received so as to inform the calling terminal that the communication information is successfully received.
Preferably, the called terminal is further configured to send NACK information to the calling terminal when receiving the PSSCH carrying the communication information fails, so as to notify the calling terminal that the communication information is failed to be received.
Preferably, the called terminal is configured to send a private signaling to other calling terminals except the calling terminal when receiving a PSCCH carrying an identifier of the called terminal and sent by multiple calling terminals, where the private signaling is used to reject talk right.
Preferably, the called terminal is configured to feed back NACK information to the calling terminal when it is determined that the calling terminal and other calling terminals occupy the same time-frequency resource and receiving the PSSCH carrying communication information fails;
and the calling terminal serving as the calling terminal is used for selecting other time-frequency resources to retransmit the PSSCH carrying the communication information after receiving the NACK information.
The invention also provides a single call terminal under the broadband DMO, the terminal comprises a memory and a processor,
the memory is used for storing program codes and transmitting the program codes to the processor;
the processor is configured to perform the following steps according to instructions in the program code: after receiving a PSCCH which is sent by a calling terminal and bears the identification of the terminal, determining one calling terminal as a calling terminal; feeding back acknowledgement ACK information to the calling terminal to inform the calling terminal that the connection is established successfully; after the PSSCH which carries the communication information and is from the calling terminal is successfully received, ACK information is fed back to the calling terminal to inform the calling terminal that the communication information is successfully received.
In the single-call method under the broadband DMO, after a first terminal receives a PSCCH which is sent by a calling terminal and carries a first terminal identifier, the calling terminal is determined to be a calling terminal. And the first terminal feeds back Acknowledgement (ACK) information to the calling terminal to inform the calling terminal that the connection is successfully established. And after the first terminal successfully receives the PSSCH which carries the communication information and is from the calling terminal, the first terminal feeds back ACK information to the calling terminal so as to inform the calling terminal that the communication information is successfully received. The invention can realize end-to-end direct communication under broadband DMO.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.
Fig. 1 is a flowchart of a single call method under broadband DMO according to an embodiment of the present invention;
fig. 2 is a schematic diagram of time-frequency resource conflicts occurring between call terminals according to an embodiment of the present invention;
fig. 3 is a signaling interaction diagram of a single call method under broadband DMO according to an embodiment of the present invention;
fig. 4 is a flowchart of a single call method under broadband DMO according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a single call device under broadband DMO according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a single call system under broadband DMO according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a single call terminal under a broadband DMO according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The present invention can be applied to the 3GPP standard D2D protocol, since the 3GPP standard D2D protocol is designed for multicast only, and the unicast case is not considered separately. Therefore, in order to better support unicast, the invention adds a single call flow without changing the D2D protocol framework.
In addition, in the standard D2D protocol communication, in order to reduce interference to LTE signals, D2D transmission can only occur in UL uplink subframes. However, the present invention is applicable to off-line situations without LTE transmission, so there is no such limitation. The present invention is different from the conventional D2D that only transmits in uplink TTI, but can transmit data on DL downlink or UL uplink subframe.
In the following embodiments, the terminals may be interphones, but are not limited thereto.
The following describes embodiments of the present invention.
Referring to fig. 1, a flowchart of a single call method under broadband DMO according to an embodiment of the present invention is provided, where the single call method under broadband DMO is described below from the perspective of a first terminal (called terminal), where the method includes:
s101: and after the first terminal receives the PSCCH which is sent by the calling terminal and bears the first terminal identification, determining one calling terminal as a calling terminal.
S102: and the first terminal feeds back Acknowledgement (ACK) information to the calling terminal to inform the calling terminal that the connection is successfully established.
S103: and after the first terminal successfully receives the PSSCH which carries the communication information and is from the calling terminal, the first terminal feeds back ACK information to the calling terminal so as to inform the calling terminal that the communication information is successfully received.
In S101, first, the first terminal is configured to: when data is not transmitted, the PSCCH (Physical side lobe control channel) is always in a state of being received. And after the first terminal receives the PSCCH carrying the identifier of the first terminal (namely the first terminal identifier), determining a calling terminal corresponding to the PSCCH carrying the first terminal identifier as a calling terminal.
In practical application, after the first terminal receives only one PSCCH carrying the first terminal identifier, the calling terminal sending the PSCCH is determined as the calling terminal.
In another case, when the first terminal receives a PSCCH carrying a first terminal identifier sent by a plurality of calling terminals, the first terminal selects one calling terminal from the plurality of calling terminals as a calling terminal. Specifically, in the first mode, the calling terminal corresponding to the PSCCH carrying the first terminal identifier, which is received first by the first terminal, is used as the calling terminal. In a second mode, the calling terminal corresponding to the PSCCH which carries the strongest signal of the first terminal identifier and is received by the first terminal is used as the calling terminal. In a third mode, the first terminal sets priorities for all calling terminals in advance, and when the first terminal receives a PSCCH which is sent by a plurality of calling terminals and carries a first terminal identifier, a calling terminal with the highest priority is selected from the plurality of calling terminals as a calling terminal according to the predetermined priority. The mode of determining the calling terminal in the embodiment of the invention is not limited to the above three modes.
In addition, in this embodiment, when the first terminal receives a PSCCH that is sent by a plurality of calling terminals and carries a first terminal identifier, after the first terminal determines a calling terminal, the first terminal sends a private signaling to other calling terminals in the plurality of calling terminals except the calling terminal, where the private signaling is used to reject talk right. That is, the first terminal sends private signaling to other calling terminals so as to inform the other calling terminals that the first terminal refuses to establish connection therewith.
In S102, an ACK/NACK feedback mechanism is introduced in the embodiments of the present invention, and when the first terminal determines that a calling terminal is a calling terminal, ACK confirmation information is fed back to the calling terminal. And after receiving the ACK information from the first terminal, the calling terminal confirms that the connection is successfully established with the first terminal.
In practical application, the first terminal may carry the ACK/NACK information on a certain domain within the PSCCH for transmission. If the traffic is bidirectional, the ACK/NACK information can also be punctured in the PSSCH. Preferably, the ACK/NACK information may be carried within the PSCCH or PSCCH with an earlier transmission opportunity.
In addition, the calling terminal is in a state of continuously receiving data in a time slot in which data is not transmitted. Specifically, the paging terminal sets the data sent by the first terminal to be the highest priority, that is, the paging terminal preferentially receives the data from the first terminal, so as to prevent missing of the reception opportunity of the ACK/NACK from the first terminal. If all the terminals know the sending resource table configuration of each other based on the similar routing protocol, the calling terminal can receive the ACK/NACK information from the first terminal on the appointed time-frequency resource so as to improve the efficiency.
In S103, after receiving the ACK information from the first terminal, the main call terminal confirms that the main call terminal successfully establishes a connection with the first terminal, and then sends a PSSCH (Physical sidelink shared channel) carrying communication information to the first terminal. Specifically, the communication information includes communication data between the calling terminal and the first terminal. And after the first terminal successfully receives the PSSCH which carries the communication information and is from the calling terminal, feeding back ACK information to the calling terminal at a first available sending opportunity so as to inform the calling terminal that the communication information is successfully received in time.
In addition, when the first terminal does not successfully receive the PSSCH which carries the communication information and is from the calling terminal, the first terminal feeds back Negative Acknowledgement (NACK) information to the calling terminal so as to inform the calling terminal that the communication information is failed to be received.
At this time, after receiving the NACK from the first terminal, the paging terminal retransmits the pscch carrying the communication information to the first terminal.
Under another condition, when the first terminal determines that the calling terminal and other calling terminals occupy the same time-frequency resource and the first terminal fails to receive the PSSCH carrying the communication information, the first terminal feeds back NACK information to the calling terminal. At this time, the calling terminal may select other time frequency resources to retransmit the PSSCH carrying the communication information, so as to avoid that the calling terminal and other calling terminals occupy the same time frequency resources. As shown in fig. 2, fig. 2 is a schematic diagram of time-frequency resource collision occurring between calling terminals, wherein the calling UE1 is used as the calling terminal of the called UE2, and the calling UE3 is used as the calling terminal of the called UE 4. The calling UE3 collides with the time-frequency resources transmitted by the calling UE1, and the called UE2 fails to accept the psch transmitted by the calling UE 1. At this time, the called UE2 feeds back NACK information to the calling UE 1. To avoid time-frequency resource collision, the calling UE1 retransmits the pscch to the called UE2 using other time-frequency resources after receiving NACK from the called UE 2.
In addition, in order to avoid that the terminals occupy the same time-frequency resource and cannot receive the data of the other side, the transmission opportunities of the terminals are uniformly distributed in a preset period.
Referring to fig. 3, fig. 3 is a signaling interaction diagram of a single call method under broadband DMO according to an embodiment of the present invention, wherein a calling UE1 sends a PSCCH carrying an identifier of a called UE2 to a called UE2, and then the called UE2 is determined as a calling terminal. The called terminal feeds back an ACK to the calling UE1 at the first available transmission opportunity. After the calling UE1 sends the PSSCH carrying communication information to the called UE2, the called UE2 feeds back ACK/NACK to the calling UE1 to inform the calling UE1 of the receiving condition of the PSSCH carrying communication information.
In the embodiment of the invention, after the first terminal receives the PSCCH which is sent by the calling terminal and carries the first terminal identification, one calling terminal is determined to be the calling terminal. And the first terminal feeds back Acknowledgement (ACK) information to the calling terminal to inform the calling terminal that the connection is successfully established. And after the first terminal successfully receives the PSSCH which carries the communication information and is from the calling terminal, the first terminal feeds back ACK information to the calling terminal so as to inform the calling terminal that the communication information is successfully received. The embodiment of the invention can realize end-to-end direct communication under broadband DMO under the condition that no base station participates in scheduling.
Referring to fig. 4, a flowchart of a single call method under broadband DMO according to an embodiment of the present invention is provided, where the single call method under broadband DMO is described below from the perspective of a second terminal (calling terminal), where the method includes:
s401: and the second terminal sends the PSCCH carrying the identification of the called terminal to the called terminal.
S402: and after receiving the ACK information from the called terminal, the second terminal sends PSSCH carrying communication information to the called terminal, wherein the ACK information is used for informing the second terminal that the connection establishment is successful.
S403: and the second terminal receives ACK information from the called terminal, wherein the ACK information is used for informing the second terminal that the communication information is successfully received.
In S401, the second terminal, as a calling terminal, sends a PSCCH carrying an identifier of the called terminal.
In S402, after the called terminal uses the second terminal as a calling terminal, ACK information is sent to the second terminal to inform that the connection between the second terminal and the calling terminal is successfully established.
And after receiving the ACK information from the called terminal, the second terminal sends PSSCH carrying communication information to the called terminal. The communication information comprises communication data of the second terminal and the called terminal.
In S403, when the called terminal successfully receives the PSSCH carrying the communication information sent by the second terminal, the called terminal feeds back ACK information to the second terminal, so as to notify the second terminal that the communication information is successfully received.
In addition, when the second terminal receives the Negative Acknowledgement (NACK) information from the called terminal, the fact that the called terminal does not successfully receive the PSSCH carrying the communication information is indicated, and at the moment, the second terminal selects other time-frequency resources to resend the PSSCH carrying the communication information.
In order to improve the data transmission efficiency of the second terminal, the second terminal calculates the error rate of the second terminal during data transmission, and adjusts parameters affecting the data transmission efficiency, such as the data transmission rate and the transmission power, according to the error rate.
Specifically, the second terminal may obtain the error rate based on ACK/NACK feedback. Specifically, the second terminal calculates the error rate of data transmission according to the number of the received ACK information and NACK information after transmitting the pscch carrying the communication information.
And the second terminal automatically adjusts the transmitted modulation coding mode according to the error rate. Specifically, if the bit error rate is higher than a preset threshold, the data transmission rate is reduced, and if the bit error rate is lower than the preset threshold, the data transmission rate is increased, so that the transmission mode can adapt to the channel quality, and the data transmission efficiency and the resource utilization rate are increased.
In addition, the data transmission power of the second terminal is in direct proportion to the traffic to be transmitted, that is, the more the traffic to be transmitted, the more the second terminal will actively increase the transmission power, so as to ensure that the transmission success rate of the user with more traffic to be transmitted is high, especially under the condition of resource conflict. Secondly, the second terminal can also perform outer loop power control based on the error rate, and if the error rate is too high, the data transmission power is increased by a certain step; otherwise, it is decreased. And the second terminal dynamically controls the data transmission power through an outer ring, and reduces the mutual interference of the whole network under the condition of meeting the transmission requirement.
The present invention further provides a single call device under broadband DMO, and referring to fig. 5, fig. 5 is a schematic structural diagram of the single call device under broadband DMO according to an embodiment of the present invention, where the single call device includes:
a receiving module 501, configured to receive a physical side lobe control channel PSCCH that is sent by a calling terminal and carries a first terminal identifier;
a determining module 502, configured to determine that a calling terminal in a PSCCH that carries a first terminal identifier is a calling terminal;
a first feedback module 503, configured to feed back ACK information to the calling terminal to inform that the connection establishment of the calling terminal is successful;
a second feedback module 504, configured to feed back ACK information to the caller terminal after successfully receiving a physical side lobe shared channel psch carrying communication information from the caller terminal, so as to inform the caller terminal that the communication information is successfully received.
The device further comprises:
and the third feedback module is used for feeding back Negative Acknowledgement (NACK) information to the calling terminal when receiving the PSSCH which carries the communication information and is from the calling terminal fails so as to inform the calling terminal that the communication information is failed to be received.
In addition, the apparatus further comprises:
and the sending module is used for sending a private signaling to other calling terminals except the calling terminal when receiving the PSCCH which is sent by a plurality of calling terminals and bears the first terminal identification, wherein the private signaling is used for rejecting the speaking right.
The embodiment of the present invention further provides a single call system under broadband DMO, and referring to fig. 6, the single call system under broadband DMO according to the embodiment of the present invention is schematically configured, where the system includes a called terminal 601 and a calling terminal 602.
The called terminal 601 is configured to receive a PSCCH that is sent by a calling terminal and carries an identifier of the called terminal; determining a calling terminal as a calling terminal; feeding back acknowledgement ACK information to the calling terminal to inform the calling terminal that the connection is successfully established;
the calling terminal 602 serving as the calling terminal is configured to send a PSSCH carrying communication information to the called terminal after receiving the ACK information;
the called terminal 601 is configured to send ACK information to the calling terminal when receiving the PSSCH carrying the communication information successfully, so as to inform the calling terminal that the communication information is successfully received.
And the called terminal is also used for sending NACK information to the calling terminal when receiving the PSSCH bearing the communication information fails so as to inform the calling terminal that the communication information fails to be received.
And the called terminal is used for sending private signaling to other calling terminals except the calling terminal when receiving the PSCCH which is sent by a plurality of calling terminals and bears the identification of the called terminal, and the private signaling is used for rejecting the talk right.
The called terminal is used for feeding back NACK information to the calling terminal when determining that the calling terminal and other calling terminals occupy the same time-frequency resource and receiving PSSCH bearing communication information fails;
and the calling terminal serving as the calling terminal is used for selecting other time-frequency resources to retransmit the PSSCH carrying the communication information after receiving the NACK information.
The embodiment of the invention provides a single calling system under broadband DMO, which comprises a called terminal and a calling terminal, wherein the called terminal is used for receiving a PSCCH (pseudo-random channel control channel) which is sent by the calling terminal and bears an identifier of the called terminal; determining a calling terminal as a calling terminal; feeding back acknowledgement ACK information to the calling terminal to inform the calling terminal that the connection is successfully established; the calling terminal as the calling terminal is used for sending PSSCH carrying communication information to the called terminal after receiving the ACK information; and the called terminal is used for sending ACK information to the calling terminal when the PSSCH bearing the communication information is successfully received so as to inform the calling terminal that the communication information is successfully received. The single-calling system under the broadband DMO provided by the embodiment of the invention can realize end-to-end direct communication under the broadband DMO.
The present invention further provides a schematic structural diagram of a single-call terminal under broadband DMO, as shown in fig. 7, where the terminal at least includes a memory 701, at least one processor 702, and at least one network interface 703; the memory 701, the processor 702, and the network interface 703 are connected to each other via a bus.
The memory 701 is used to store program codes and transfer the program codes to the processor 702.
The processor 702 is configured to perform the following steps according to instructions in the program code: after receiving a PSCCH which is sent by a calling terminal and bears the terminal identification, determining one calling terminal as a calling terminal; feeding back acknowledgement ACK information to the calling terminal to inform the calling terminal that the connection is established successfully; and after receiving the PSSCH bearing the communication information from the calling terminal successfully, feeding back ACK information to the calling terminal to inform the calling terminal that the communication information is successfully received.
Further, when receiving the PSSCH carrying the communication information from the paging terminal fails, the processor 702 feeds back NACK information to the paging terminal to notify the paging terminal that the communication information is failed to be received.
Further, when the processor 702 receives PSCCHs carrying the first terminal identifier and transmitted by a plurality of calling terminals,
determining a calling terminal corresponding to the PSCCH received firstly as a calling terminal;
or,
determining a calling terminal corresponding to PSCCH with the strongest signal as a calling terminal;
or,
and determining the calling terminal with the highest priority as the calling terminal according to the preset priority of the calling terminal.
Further, when receiving the PSCCH carrying the first terminal identifier sent by the multiple calling terminals, the processor 702 sends a private signaling to the calling terminals except the calling terminal, where the private signaling is used to reject the talk right.
Further, the processor 702 is continuously in a state of receiving PSCCH when data is not transmitted;
further, the processor 702 determines that the paging terminal and other paging terminals occupy the same time frequency resource, and when the first terminal fails to receive the PSSCH carrying the communication information, the processor feeds back NACK information to the paging terminal, so that the paging terminal selects other time frequency resources to retransmit the PSSCH carrying the communication information.
For the system embodiment, since it basically corresponds to the method embodiment, reference may be made to the partial description of the method embodiment for relevant points. The above-described system embodiments are merely illustrative, and 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, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The single call method, apparatus and system under broadband DMO provided by the embodiment of the present invention are described in detail above, and a specific example is applied in the present document to illustrate the principle and implementation manner of the present invention, and the description of the above embodiment is only used to help understanding the method and core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (15)
1. A single call method under broadband DMO, the method comprising:
after a first terminal receives a physical side lobe control channel PSCCH which is sent by a calling terminal and carries a first terminal identification, determining one calling terminal as a calling terminal;
the first terminal feeds back Acknowledgement (ACK) information to the calling terminal to inform the calling terminal that the connection is successfully established;
and after the first terminal successfully receives a physical side lobe shared channel PSSCH which carries communication information and is from the calling terminal, the first terminal feeds back ACK information to the calling terminal so as to inform the calling terminal that the communication information is successfully received.
2. The method of claim 1, further comprising:
and when the first terminal fails to receive the PSSCH which carries the communication information and is from the calling terminal, feeding back Negative Acknowledgement (NACK) information to the calling terminal so as to inform the calling terminal that the communication information is failed to be received.
3. The method of claim 1, wherein the determining that one calling terminal is a calling terminal after the first terminal receives a PSCCH carrying a first terminal identifier sent by the calling terminal comprises:
when the first terminal receives PSCCHs carrying a first terminal identity transmitted by a plurality of calling terminals,
determining a calling terminal corresponding to the PSCCH received firstly as a calling terminal;
or,
determining a calling terminal corresponding to PSCCH with the strongest signal as a calling terminal;
or,
and determining the calling terminal with the highest priority as the calling terminal according to the preset priority of the calling terminal.
4. The method of claim 1, further comprising:
and when the first terminal receives PSCCH which is sent by a plurality of calling terminals and carries a first terminal identifier, sending private signaling to other calling terminals except the calling terminal, wherein the private signaling is used for rejecting the talk right.
5. The method of claim 1, further comprising:
and the first terminal is continuously in a state of receiving the PSCCH when the data is not transmitted.
6. The method of claim 1, further comprising:
when the first terminal determines that the calling terminal and other calling terminals occupy the same time frequency resource and the first terminal fails to receive the PSSCH carrying the communication information, the first terminal feeds back NACK information to the calling terminal so that the calling terminal selects other time frequency resources to resend the PSSCH carrying the communication information.
7. The method of claim 1, wherein the ACK information and the NACK information are fed back to the primary call terminal in a PSCCH or PSCCH.
8. A single call method under broadband DMO, the method comprising:
the second terminal sends PSCCH carrying the identification of the called terminal to the called terminal;
after receiving Acknowledgement (ACK) information from the called terminal, the second terminal sends a PSSCH carrying communication information to the called terminal, wherein the ACK information is used for informing the second terminal that the connection establishment is successful;
and the second terminal receives ACK information from the called terminal, wherein the ACK information is used for informing the second terminal that the communication information is successfully received.
9. The method of claim 8, further comprising:
and when the second terminal receives the Negative Acknowledgement (NACK) information from the called terminal, other time-frequency resources are selected to retransmit the PSSCH carrying the communication information.
10. The method of claim 8, further comprising:
the second terminal calculates the error rate of the second terminal;
and adjusting the transmission rate and/or transmission power of the self-body according to the error rate.
11. A single call device under broadband DMO, said device comprising:
the receiving module is used for receiving a physical side lobe control channel PSCCH which is sent by a calling terminal and carries a first terminal identification;
the determining module is used for determining that one calling terminal in the PSCCH carrying the first terminal identification is a calling terminal;
the first feedback module is used for feeding back Acknowledgement (ACK) information to the calling terminal so as to inform the calling terminal that the connection is successfully established;
and the second feedback module is used for feeding back ACK information to the calling terminal after successfully receiving a physical side lobe shared channel PSSCH which carries communication information and is from the calling terminal so as to inform the calling terminal that the communication information is successfully received.
12. The apparatus of claim 11, further comprising:
and the third feedback module is used for feeding back Negative Acknowledgement (NACK) information to the calling terminal when receiving the PSSCH which carries the communication information and is from the calling terminal fails so as to inform the calling terminal that the communication information is failed to be received.
13. The apparatus of claim 11, further comprising:
and the sending module is used for sending a private signaling to other calling terminals except the calling terminal when receiving the PSCCH which is sent by a plurality of calling terminals and bears the first terminal identification, wherein the private signaling is used for rejecting the speaking right.
14. A single call system under broadband DMO is characterized in that the system comprises a called terminal and a calling terminal,
the called terminal is used for receiving the PSCCH which is sent by the calling terminal and bears the identification of the called terminal; determining a calling terminal as a calling terminal; feeding back acknowledgement ACK information to the calling terminal to inform the calling terminal that the connection is successfully established;
the calling terminal as the calling terminal is used for sending PSSCH carrying communication information to the called terminal after receiving the ACK information;
and the called terminal is used for sending ACK information to the calling terminal when the PSSCH carrying the communication information is successfully received so as to inform the calling terminal that the communication information is successfully received.
15. A single call terminal under broadband DMO, the terminal comprising a memory and a processor,
the memory is used for storing program codes and transmitting the program codes to the processor;
the processor is configured to perform the following steps according to instructions in the program code: after receiving a PSCCH which is sent by a calling terminal and bears the identification of the terminal, determining one calling terminal as a calling terminal; feeding back acknowledgement ACK information to the calling terminal to inform the calling terminal that the connection is established successfully; after the PSSCH which carries the communication information and is from the calling terminal is successfully received, ACK information is fed back to the calling terminal to inform the calling terminal that the communication information is successfully received.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510605342.0A CN106550317B (en) | 2015-09-21 | 2015-09-21 | Individual calling method, device and system under a kind of broadband DMO |
| PCT/CN2016/083303 WO2017049937A1 (en) | 2015-09-21 | 2016-05-25 | Single call method, apparatus and system under wideband dmo |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510605342.0A CN106550317B (en) | 2015-09-21 | 2015-09-21 | Individual calling method, device and system under a kind of broadband DMO |
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| CN106550317B CN106550317B (en) | 2019-11-15 |
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| WO2017049937A1 (en) | 2017-03-30 |
| CN106550317B (en) | 2019-11-15 |
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