CN106034340B - Communication mode control method, base station, user terminal and system - Google Patents
Communication mode control method, base station, user terminal and system Download PDFInfo
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Abstract
The invention provides a communication mode control method, a base station, a user terminal and a system, wherein the communication mode control method comprises the following steps: after establishing D2D communication between two user terminals in a cell, a base station receives monitoring information reported by at least one of the two user terminals; and the base station judges whether the condition of keeping the D2D communication between the two user terminals is met according to the monitoring information, and if not, the base station sends a notice of switching the D2D communication mode to the cellular network communication mode to the at least one user terminal. The problem of poor communication effect of the user terminal caused by the fact that communication modes of the two user terminals are not switched timely when the two user terminals carrying out D2D communication are not suitable for carrying out D2D communication in the prior art is solved, the communication of the user terminals is guaranteed not to be interrupted, the communication of the user terminals is enabled to be smooth, and experience effect of users is improved.
Description
Technical Field
The present invention relates to the field of Cellular (Cellular) communications, and in particular, to a method, a base station, a user terminal, and a system for controlling a communication mode.
Background
With the development of wireless communication, the requirement of communication service on time delay is higher and higher, and the requirement on spectrum efficiency is also higher and higher, because D2D is direct communication between devices, time delay can be made very low, and in addition, a D2D communication link can be reasonably multiplexed with the spectrum of a cell, thereby further improving spectrum efficiency.
The D2D communication link may be multiplexed with the spectrum of the cell, and therefore, may inevitably cause mutual interference between the D2D communication resource and the Cellular communication resource. In the current radio resource allocation algorithm, how to allocate resources to D2D users (hereinafter referred to as D2D UEs) and Cellular users (hereinafter referred to as C UEs) from the viewpoint of interference minimization is mainly considered; however, there is no specific control mechanism in the prior art for whether the D2D communication mode is suitable to be continuously used between two ues performing D2D communication, and in practical applications, it is a problem that communication interruption or communication instability may occur between two ues performing D2D communication due to that the two ues are not suitable for performing D2D communication but do not switch the communication mode in time, which affects the experience of users.
Disclosure of Invention
The invention provides a control method of a communication mode, a base station, a user terminal and a system, which solve the problem that the communication effect of the user terminal is poor because the communication modes of two user terminals are not switched in time when the D2D communication between the two user terminals is not suitable for the D2D communication in the prior art.
In order to solve the problems, the invention adopts the following technical scheme:
a method of controlling a communication mode, comprising:
after establishing D2D communication between two user terminals in a cell, a base station receives monitoring information reported by at least one of the two user terminals;
the base station judges whether the two user terminals meet the condition of keeping D2D communication according to the monitoring information;
if not, a switching notification of switching from the D2D communication mode to the cellular network communication mode is sent to the at least one user terminal.
Further, the monitoring information includes: D2D link measurement information;
the step of judging, by the base station according to the monitoring information, whether the condition for maintaining D2D communication between the two ues is satisfied specifically includes: and the base station judges whether the D2D communication link performances of the two user terminals meet the condition of maintaining D2D communication according to the D2D link measurement information.
Further, the monitoring information includes: position information and/or moving speed information of the user terminal;
the base station judging whether the two user terminals meet the condition of maintaining the D2D communication according to the monitoring information comprises the following steps: the base station judges whether the two user terminals meet the condition of keeping D2D communication according to the position information of the user terminals; or, the base station judges whether the two ues meet the condition of maintaining D2D communication according to the moving speed information of the ues; or, the base station judges whether the two ues meet the condition of maintaining D2D communication according to the location information and the moving speed information of the ues.
Further, before the base station establishes D2D communication between two user terminals in its cell, the method further includes: the base station divides a cell into a plurality of regions, and allocates D2D communication resources for each region according to the area size of each region to obtain region information of each region, wherein the region information is used for the base station to allocate resources to user terminals which perform D2D communication in the corresponding region; and issuing the identification information of the cell to a user terminal entering the cell.
Further, the step of the base station establishing D2D communication between two ues in its cell specifically includes: the base station judges whether the moving speeds of the two user terminals meet preset D2D communication establishment conditions, wherein the preset D2D communication establishment conditions comprise: the moving speeds of the two user terminals are lower than a speed threshold value; if so, the base station allocates D2D communication resources to the two user terminals.
Further, the preset D2D communication establishment condition further includes: the two user terminals are in the same area; and/or the transmission rates of the two user terminals are lower than the transmission rate threshold;
before the base station allocates the D2D communication resources to the two user terminals, the method further includes: the base station also judges whether the positions and/or the transmission rates of the two user terminals meet the preset D2D communication establishment condition.
A method of controlling a communication mode, comprising:
after establishing D2D communication between a user terminal and a user terminal at an opposite end in a cell, reporting monitoring information to a base station;
the user terminal receives a switching notification sent by the base station when the base station judges that the condition for keeping D2D communication is not met between the user terminal and a user terminal of an opposite terminal according to the monitoring information;
and the user terminal switches the D2D communication mode to the cellular network communication mode according to the switching notification.
Further, the reporting, by the ue, the monitoring information to the base station includes: and the user terminal reports the D2D link measurement information to the base station.
Further, the reporting, by the ue, the monitoring information to the base station includes: and the user terminal reports the position information and/or the moving speed information of the user terminal to the base station.
A base station, comprising:
a first information transceiver module, configured to receive monitoring information reported by at least one of two user terminals after the base station establishes D2D communication between the two user terminals in a cell of the base station;
a judging module, configured to judge, by the base station, whether a condition for maintaining D2D communication between the two ues is met according to the monitoring information received by the first information transceiver module;
the first information transceiving module is further configured to send, if the determination result of the determining module is negative, a switching notification of switching from the D2D communication mode to the cellular network communication mode to the at least one user terminal by the base station.
Further, the determining module is configured to determine whether the locations and the moving speeds of the two ues satisfy preset D2D communication establishment conditions, where the preset D2D communication establishment conditions include: the moving speeds of the two user terminals are lower than a speed threshold value; the base station further comprises a resource allocation module, and the resource allocation module is used for allocating D2D communication resources to the two user terminals when the judgment module judges that the moving speeds of the two user terminals meet the preset D2D communication establishment condition.
A user terminal, comprising:
the second information transceiver module is used for reporting monitoring information to a base station after the user terminal establishes D2D communication with a user terminal of an opposite terminal in a cell;
the second information transceiver module is further configured to receive, by the user terminal, a handover notification sent when the base station determines, according to the monitoring information, that the condition for maintaining D2D communication is not satisfied between the user terminal and a user terminal of an opposite end;
and the communication mode switching module is used for switching the D2D communication mode to the cellular network communication mode according to the switching notification by the user terminal.
A system for switching communication modes, comprising a base station as claimed in any one of the preceding claims and a user terminal as claimed in the preceding claim.
The invention has the beneficial effects that:
the invention provides a control method of a communication mode, a base station, a user terminal and a system, wherein the base station judges whether the two user terminals meet the condition of keeping D2D communication by receiving monitoring information reported by two user terminals establishing D2D communication in a cell, and if not, the base station sends a switching notice of switching a D2D communication mode to a cellular network communication mode to at least one user terminal. According to the scheme, the communication modes of the two user terminals which carry out D2D communication can be switched at the first time when the two user terminals do not meet the condition of keeping the D2D communication, so that the communication of the user terminals is not interrupted, the communication of the user terminals is smooth, and the experience effect of a user is improved.
Drawings
Fig. 1 is a flowchart of a method for controlling a communication mode according to an embodiment of the present invention;
fig. 2 is a schematic resource allocation diagram of a D2D communication resource algorithm according to an embodiment of the present invention;
fig. 3 is a flowchart of a method for controlling a communication mode according to a second embodiment of the present invention;
fig. 4 is a schematic structural diagram of a base station according to a third embodiment of the present invention;
fig. 5 is a schematic structural diagram of a user terminal according to a fourth embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following detailed description and accompanying drawings.
The first embodiment is as follows:
fig. 1 is a flowchart of a method for controlling a communication mode according to an embodiment of the present invention; referring to figure 1 of the drawings, in which,
s101: after establishing D2D communication between two user terminals in a cell, a base station receives monitoring information reported by at least one of the two user terminals;
specifically, the user terminal monitors the D2D communication link or its own information in real time or at regular time, and sends the monitored monitoring information to the base station;
preferably, when D2D communication is established between two ues in a cell of a base station, the base station establishes a monitoring communication link with at least one of the ues, and the base station receives monitoring information reported by the at least one ue through the monitoring communication link. In order to realize real-time detection of a D2D communication link while a base station allocates communication resources between two user terminals needing D2D communication, the base station activates a Physical Downlink Control Channel (PDCCH) link connection or other Control plane connection, and a Physical Uplink Control Channel (PUCCH) link connection or other Control plane connection, and establishes a monitoring communication link with at least one user terminal; the base station receives monitoring information reported by the user terminal through the monitoring communication link;
the monitoring information specifically includes: D2D link measurement information, or at least one of position information and moving speed information of the user terminal; specifically, the base station receives at least one of D2D link measurement information reported by the ue through the PUCCH link of the monitored communication link, or location information and moving speed information of the ue.
S102: the base station judges whether the two user terminals meet the condition of keeping D2D communication according to the monitoring information; if yes, ending; if not, turning to S104;
the conditions for maintaining D2D communication include: the performance of the communication link between the two ues is maintained at a better level, e.g., the snr between the two ues is greater than or equal to the threshold; the method can also comprise the following steps: the positions of the two user terminals are required to be in the same area; and/or, the moving speed of the two user terminals also needs to be lower than a speed threshold value, and the like;
when the base station receives the D2D link measurement information reported by the user terminal through the PUCCH for monitoring the communication link, the base station judges whether the performance of the D2D link displayed in the D2D link measurement information is poor, and if so, judges whether the signal-to-noise ratio is lower than a threshold value, so that the base station can switch the user terminal from a D2D UE mode to a C UE mode in time when the signal-to-noise ratio of the user terminal is lower than the threshold value;
when the base station receives at least one of the position information and the moving speed information of the user terminal reported by the user terminal through the PUCCH of the monitoring communication link, the base station judges whether the two user terminals meet the condition of keeping D2D communication according to the position information of the user terminal; or, the base station judges whether the two ues meet the condition of maintaining D2D communication according to the moving speed information of the ues; or, the base station judges whether the two ues meet the condition of maintaining D2D communication according to the location information and the moving speed information of the ues;
further, if the distance between two ues performing D2D communication is getting larger, although the two devices are still in the same cell, due to the limited power of the signal in the D2D communication link, there may be a case where communication is interrupted when the location information and moving speed information of the two ues both satisfy the D2D maintaining communication condition, so in this embodiment, it is possible to determine the D2D link measurement information together with the location information and moving speed information of the two ues, and allow the two ues to continue D2D communication when both the D2D maintaining communication condition are satisfied.
S103: sending a handover notification to the user terminal for a handover from the D2D communication mode to the cellular network communication mode;
specifically, when the base station judges that the condition for maintaining the D2D communication is not met between the two user terminals, the base station timely sends a switching notice of switching the D2D communication mode to the cellular network communication mode to the user terminals through the PDCCH link of the monitoring communication link; therefore, the user terminal can be switched from the D2D UE mode to the C UE mode in time, and the base station also allocates Cellular communication resources for the user terminal.
It should be noted that the ue in the present invention is a ue with D2D communication function; including cell phones, tablets, etc. having D2D communication functions; the base station is a base station in a cell and is used for performing operations of coordinating communication of communication users in the cell, allocating resources and the like; the information of the position of the user terminal is mainly the positioning information of the user terminal; the moving speed of the user terminal comprises: the current moving speed of the user terminal, the average speed in a short time, etc.
Before the step S101, the base station establishes D2D communication between two user terminals in its cell, the method further includes: the base station divides a cell into a plurality of regions, and allocates D2D communication resources of each region according to the area size of each region to obtain region information of each region, wherein the region information is used for the base station to allocate resources to user terminals which perform D2D communication in the corresponding region; and issuing the information of each area and the identification information of the cell to a user terminal entering the cell. Specifically, as shown in fig. 2, for a resource allocation diagram of the D2D communication resource algorithm provided in the first embodiment of the present invention, a cell covered by Cellular is divided into several regions, each region is pre-allocated with communication resources RBn (radio bearer physical channel) of D2D UEs orthogonal to each other, such as RB1-RB9, and resources used by UEs C inside each region are resources RB-C orthogonal to RBn; of course, if the difference between the communication resource occupation and the pre-allocation of the D2D UEs in a certain area is found to be large in the process of scheduling resources, the RBn may be adjusted, and the corresponding Rb-c may also be adjusted accordingly. Each area (area) distribution may be divided by area, with larger areas allocating more C UE resources Rb-C. The base station of the cell sends down a frame structure established in a D2D mode to all the UEs residing in the cell through a broadcast message, and the frame structure carries the ID (identification information of the base station) of the cell, so that the UE can timely discover other UEs supporting the D2D mode with its own UE in an area when the UE discovers D2D. In this way, the user terminal that needs to perform D2D communication can discover other devices that may be capable of D2D communication with the user terminal in the first time, so that the application for D2D communication can be completed quickly, and different D2D communication resources can be allocated according to different regions by using the D2D communication resources allocated by the base station.
Because the current allocation algorithm considers the resource allocation based on the position information of the UE, the spectrum orthogonality of the wireless resources between the D2D UE and the C UE is considered as much as possible; however, there is a drawback that in practical applications, it often occurs that the D2D communication is unstable due to too fast UE moving in the cell, or the D2D communication cannot be established at all, thereby having a large impact on the UE communication. Therefore, in this embodiment, specifically, the step S101 of establishing D2D communication between two ues in its cell by the base station includes: the base station judges whether the moving speeds of the two user terminals meet preset D2D communication establishment conditions, wherein the preset D2D communication establishment conditions comprise: the moving speeds of the two user terminals are lower than a speed threshold value; if so, the base station allocates D2D communication resources to the two user terminals. In the communication of the cellular network, due to the particularity of D2D communication, when the moving speed of the ue is high, the problems of disconnection and unstable communication are easily caused, so when allocating communication resources to two ues, the moving speed needs to be detected, and if the speed is lower than the speed threshold, the moving speed meets the preset D2D communication establishment condition; for example, the speed threshold may be set to 30 km/h; under the condition that the user terminal meets the preset D2D communication establishment condition, the D2D communication resource is allocated to the user, so that the condition that the established D2D communication link is unstable due to the fact that the moving speed of the user terminal is too high is avoided, and the communication quality of the user terminal is improved.
Preferably, the preset D2D communication establishment condition further includes: the two user terminals are in the same area; and/or the transmission rates of the two user terminals are lower than the transmission rate threshold; before the base station allocates the D2D communication resources to the two user terminals, the method further includes: the base station also judges whether the positions and/or the transmission rates of the two user terminals meet the preset D2D communication establishment condition. In this embodiment, the base station detects the positions of two ues in a cell, and determines whether the ues are located in the same area; in the communication of the cellular network, the two user terminals can perform D2D communication only when the two user terminals are in the same area defined by the cellular network in advance, so when determining whether the two user terminals can perform D2D communication, it is first necessary to determine whether the two user terminals are in the same area; the transmission rate configuration of the mobile terminal depends on the total RB resource of the base station in the cellular network, in this embodiment, if the requirement of the transmission rate exceeds 10% of the total RB resource, the transmission rate between two user terminals that need D2D communication is considered to be higher than the transmission rate threshold, e.g., the RB resource set as the transmission rate threshold is 10% of the RB requirement of the total resource of the base station, so that the base station will allocate D2D communication resource to the user terminal when detecting that the RB resource requirement of the transmission rate is lower than 10% of the RB requirement of the total resource of the base station.
Further, before establishing D2D communication, two ues can determine whether they can establish D2D communication by active monitoring of the base station; or, after receiving, by the base station, the D2D communication establishment requests carrying the identification information of other ues in the same cell sent by the two ues respectively, determining whether the position, the moving speed, and the transmission rate information of the two ues satisfy the preset D2D communication establishment condition. That is, when D2D communication resources are allocated to the ues in the cell, the determination may be performed by acquiring the information of the ues through active monitoring of the base station, or by receiving the information sent by the ues actively.
Specifically, when the UE is in the C UE mode, the base station detects in real time whether the UE simultaneously satisfies the preset D2D communication establishment condition, and if it is found that the UE satisfies the preset D2D communication establishment condition, the base station switches the UE from the C UE mode to the D2D UE mode. In addition, for the case that the C UE resource and the D2D UE resource cannot be completely orthogonal under a certain area, the C UE resource is always allocated by wire.
In this embodiment, the present invention is described from the base station side, and whether the two ues need to switch the communication mode is determined by monitoring information acquired from at least one of the two ues performing D2D communication, and if so, a notification of switching the communication mode is sent to the ue, so that the ue can switch the stable cellular network communication mode in time when the communication quality is unstable.
Example two:
fig. 3 is a flowchart of a method for controlling a communication mode according to a second embodiment of the present invention; referring to figure 3 of the drawings, in which,
s301: after establishing D2D communication between a user terminal and a user terminal at an opposite end in a cell, reporting monitoring information to a base station;
when establishing D2D communication with a user terminal of an opposite terminal in a cell, the user terminal establishes a monitoring communication link with a base station, and reports monitoring information to the base station through the monitoring communication link;
specifically, the user terminal reports the D2D link measurement information to the base station through the monitoring communication link; or the user terminal reports the position information and/or the moving speed information of the user terminal to the base station through the monitoring communication link; or, the user terminal reports the D2D link measurement information, and the position information and the moving speed information of the user terminal to the base station through the monitoring communication link;
s302: the user terminal receives a switching notice sent by the base station when judging that the condition for keeping D2D communication is not met between the user terminal and the user terminal of the opposite terminal according to the monitoring information;
specifically, the ue sends its D2D link measurement information to the bs through the connection link, where the D2D link measurement information is used for the bs to determine whether switching of the D2D communication mode of the ue is needed; the user terminal receives a switching notice which is sent by the base station when the user terminal judges that the D2D communication of the user terminal needs to be switched, wherein the switching notice is switched from a D2D communication mode to a cellular network communication mode;
s303: and the user terminal switches the D2D communication mode to the cellular network communication mode according to the switching notification.
The identifying, by the ue, the ue of the opposite end in the cell specifically includes: after the user terminal enters the cell, receiving information which is sent by the base station and is about to divide the cell into a plurality of regions, and allocating information of each region in a D2D communication link and identification information of the cell according to the area size of each region; the user terminal identifies the user terminal of the opposite terminal in the cell according to the identification information of the cell, so as to initiate a D2D communication request with the user terminal of the opposite terminal to the base station; the user terminal sends a request for establishing D2D communication; after D2D communication is established between user terminals at opposite ends, communication resources are distributed in corresponding areas according to the two user terminals; in this embodiment, when the UE enters the cell of the base station, because the base station of the cellular cell sends down a frame structure established in the D2D mode to all UEs residing in the cell through a broadcast message, and the frame structure carries the ID of the cellular (the identification information of the cell), the UE can timely discover other UEs supporting the D2D mode under an area with its own UE when discovering D2D. When receiving the feedback information of the base station, the user terminal sends the information of the position and the moving speed of the user terminal to the base station;
the step S301 of establishing D2D communication between the ue and another ue in the cell specifically includes: the ue sends moving speed information to the base station, where the moving speed information is used for the base station to determine whether moving speeds of the ue and a ue at an opposite end satisfy a preset D2D communication establishment condition, where the preset D2D communication establishment condition includes: the moving speeds of the two user terminals are lower than a speed threshold value; when the user terminal and a user terminal of an opposite terminal meet the preset D2D communication establishment condition, the user terminal receives D2D communication resources distributed by the base station; the user terminal establishes D2D communication with a user terminal of a peer over the D2D communication link.
Preferably, the user terminal sends its own location information and/or transmission rate information to the base station; the position information and/or the transmission rate information are used for the base station to judge whether the position and/or the transmission rate of the user terminal meet the preset D2D communication establishment condition; in this embodiment, the preset D2D communication establishment conditions include: the two user terminals are in the same area; and/or the transmission rates of the two user terminals are below the transmission rate threshold.
In this embodiment, a communication mode control method is based on a user terminal, where a user terminal establishes a monitoring communication link with a base station, sends monitoring information of the user terminal to the base station through the monitoring communication link, and switches a D2D communication mode to a cellular network communication mode after receiving a switching notification sent by the base station. The reliability and stability of the communication of the user terminal in the cell are realized.
Example three:
as shown in fig. 4, which is a schematic structural diagram of a base station according to a third embodiment of the present invention, please refer to fig. 3, where the base station 40 includes: a first information transceiver module 401, configured to receive monitoring information reported by at least one of two user terminals after the base station 40 establishes D2D communication between the two user terminals in its cell; a determining module 402, configured to determine, by the base station 40, whether a condition for maintaining D2D communication between the two ues is met according to the monitoring information received by the first information transceiver module 401; the first information transceiver module 401 is further configured to send, if the determination result of the determining module 402 is negative, a notification that the D2D communication mode is switched to the cellular network communication mode to the at least one user terminal by the base station 40. Specifically, the base station 40 further includes a link establishing module, where the link establishing module is configured to establish a monitoring communication link with at least one of the two user terminals when the base station 40 establishes D2D communication between the two user terminals in its cell; the first information transceiver module 402 is specifically configured to receive, by the base station 40, monitoring information reported by the user terminal through the monitoring communication link.
In some embodiments, the base station 40 further comprises: a region dividing module, configured to divide the cell into a plurality of regions by the base station 40, and allocate a D2D communication link according to the area size of each region; the first information transceiver module is further configured to send the identification information of the cell to a user terminal entering the cell.
In other embodiments, the determining module 402 is configured to determine, by the base station 40, whether the moving speeds of the two ues satisfy a preset D2D communication establishment condition, where the preset D2D communication establishment condition includes: the moving speeds of the two user terminals are lower than a speed threshold value; the base station 40 further includes a resource allocation module, where the resource allocation module is configured to, when the determining module 402 determines that the moving speeds of the two ues meet a preset D2D communication establishment condition, the base station 40 allocates D2D communication resources to the two ues.
Example four:
as shown in fig. 5, which is a schematic structural diagram of a user terminal according to a fourth embodiment of the present invention, please refer to fig. 5, where the user terminal 50 includes: a second information transceiver module 501, configured to report monitoring information to a base station after the user terminal 50 establishes D2D communication with a user terminal at an opposite end in a cell; the second information transceiver module 501 is further configured to receive, by the user terminal 50, a switching notification sent when the base station determines, according to the monitoring information, that the condition for maintaining D2D communication is not satisfied between the user terminal 50 and a user terminal at an opposite end; a communication mode switching module 502, configured to switch the D2D communication mode to the cellular network communication mode according to the switching notification by the user terminal 50. The user terminal 50 includes a mobile phone, a tablet, and the like.
In some embodiments, the second information transceiving module 501 is further configured to send, by the ue 50, moving speed information thereof to the base station, where the moving speed information is used by the base station to determine whether the moving speed of the ue 50 satisfies a preset D2D communication establishment condition, where the preset D2D communication establishment condition includes: the moving speeds of the two user terminals are lower than a speed threshold value; the second information transceiving module 501 is further configured to receive, by the ue 50, a D2D communication link allocated by the base station when the ue 50 and a ue at an opposite end in a cell meet the preset D2D communication establishment condition; the user terminal 50 further includes a D2D communication establishment module, the D2D communication establishment module for the user terminal establishing D2D communication with another user terminal over the D2D communication link.
The present invention also provides a control system of a communication mode, comprising: comprising a base station as provided in any of the above embodiments and a user terminal as described in the above embodiments. The control system ensures that the user terminal can always keep better network communication quality when using the network service in the system through the mutual matching between the base station and the user terminal, thereby increasing the use confidence of the user and improving the use experience of the user.
In summary of the above description of the embodiments, the present invention has the following advantageous effects:
the invention provides a control method, a base station, a user terminal and a system of a communication mode, wherein a monitoring communication link is established between the base station and at least one user terminal; and judging whether the two user terminals meet the condition of keeping D2D communication by receiving the monitoring information reported by at least one user terminal, if not, sending a switching notice of switching the D2D communication mode to the cellular network communication mode to at least one user terminal. According to the scheme, the communication modes of the two user terminals carrying out D2D communication can be switched at the first time when the two user terminals do not meet the condition of keeping the D2D communication, so that the communication of the user terminals cannot be interrupted, and the experience effect of a user is improved;
further, before establishing D2D communication between two user terminals, the method further includes: and judging whether the moving speed of the user terminal is lower than a speed threshold value or not, and if so, establishing D2D communication of the two user terminals. The two user terminals are enabled to ensure the stability and feasibility of the communication when establishing the D2D communication.
The foregoing is a more detailed description of the present invention that is presented in conjunction with specific embodiments, and the practice of the invention is not to be considered limited to those descriptions. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (12)
1. A method for controlling a communication mode, comprising:
a base station divides a cell into a plurality of regions, and allocates D2D communication resources for each region according to the area size of each region to obtain region information of each region, wherein the region information is used for the base station to allocate resources to user terminals which perform D2D communication in the corresponding region; sending the identification information of the cell to a user terminal entering the cell;
after establishing D2D communication between two user terminals in a cell, the base station receives monitoring information reported by at least one of the two user terminals;
the base station judges whether the two user terminals meet the condition of keeping D2D communication according to the monitoring information;
if not, a switching notification of switching from the D2D communication mode to the cellular network communication mode is sent to the at least one user terminal.
2. The method of claim 1, wherein the monitoring information comprises: D2D link measurement information;
the base station judging whether the two user terminals meet the condition of maintaining the D2D communication according to the monitoring information comprises the following steps: and the base station judges whether the D2D communication link performances of the two user terminals meet the condition of maintaining D2D communication according to the D2D link measurement information.
3. The method of claim 1, wherein the monitoring information comprises: position information and/or moving speed information of the user terminal;
the base station judging whether the two user terminals meet the condition of maintaining the D2D communication according to the monitoring information comprises the following steps: the base station judges whether the two user terminals meet the condition of keeping D2D communication according to the position information of the user terminals; or, the base station judges whether the two ues meet the condition of maintaining D2D communication according to the moving speed information of the ues; or, the base station judges whether the two ues meet the condition of maintaining D2D communication according to the location information and the moving speed information of the ues.
4. The method according to any of claims 1-3, wherein the base station establishing D2D communication between two user terminals in its cell specifically comprises: the base station judges whether the moving speeds of the two user terminals meet preset D2D communication establishment conditions, wherein the preset D2D communication establishment conditions comprise: the moving speeds of the two user terminals are lower than a speed threshold value; if so, the base station allocates D2D communication resources to the two user terminals.
5. The method according to claim 4, wherein the preset D2D communication establishment condition further comprises: the two user terminals are in the same area; and/or the transmission rates of the two user terminals are lower than the transmission rate threshold;
before the base station allocates the D2D communication resources to the two user terminals, the method further includes: the base station also judges whether the positions and/or the transmission rates of the two user terminals meet the preset D2D communication establishment condition.
6. A method for controlling a communication mode, comprising:
after entering a cell corresponding to a base station, a user terminal receives the cell divided into a plurality of regions by the base station issued by the base station, and allocates information of each region in a D2D communication link and identification information of the cell according to the area size of each region; the area information is used for the base station to allocate resources to the user terminal which performs D2D communication in the corresponding area;
the user terminal identifies the user terminal of the opposite terminal in the cell according to the identification information of the cell, so as to initiate a D2D communication request with the user terminal of the opposite terminal to the base station;
after establishing D2D communication between the user terminal and the user terminal of the opposite terminal, reporting monitoring information to a base station;
the user terminal receives a switching notification sent by the base station when the base station judges that the condition for keeping D2D communication is not met between the user terminal and a user terminal of an opposite terminal according to the monitoring information;
and the user terminal switches the D2D communication mode to the cellular network communication mode according to the switching notification.
7. The method of claim 6, wherein the reporting, by the UE, the monitoring information to the BS comprises: and the user terminal reports the D2D link measurement information to the base station.
8. The method of claim 6 or 7, wherein the reporting, by the ue, the monitoring information to the base station comprises: and the user terminal reports the position information and/or the moving speed information of the user terminal to the base station.
9. A base station, comprising:
the base station divides a cell into a plurality of regions, and allocates D2D communication resources for each region according to the area of each region to obtain region information of each region, wherein the region information is used for the base station to allocate resources to user terminals which perform D2D communication in the corresponding region; sending the identification information of the cell to a user terminal entering the cell;
a first information transceiver module, configured to receive monitoring information reported by at least one of two user terminals after the base station establishes D2D communication between the two user terminals in a cell of the base station;
a judging module, configured to judge, by the base station, whether a condition for maintaining D2D communication between the two ues is met according to the monitoring information received by the first information transceiver module;
the first information transceiving module is further configured to send, if the determination result of the determining module is negative, a switching notification of switching from the D2D communication mode to the cellular network communication mode to the at least one user terminal by the base station.
10. The base station of claim 9, wherein the determining module is further configured to determine whether the moving speeds of the two ues satisfy a preset D2D communication establishment condition, and the preset D2D communication establishment condition comprises: the moving speeds of the two user terminals are lower than a speed threshold value; the base station further comprises a resource allocation module, and the resource allocation module is used for allocating D2D communication resources to the two user terminals when the judgment module judges that the moving speeds of the two user terminals meet the preset D2D communication establishment condition.
11. A user terminal, comprising:
the second information transceiver module is used for receiving the cell divided into a plurality of regions by the base station issued by the base station after entering the cell corresponding to the base station, and distributing the information of each region in the D2D communication link and the identification information of the cell according to the area size of each region; the area information is used for the base station to allocate resources to the user terminal which performs D2D communication in the corresponding area; identifying the user terminal of the opposite terminal in the cell according to the identification information of the cell, thereby initiating a D2D communication request with the user terminal of the opposite terminal to the base station; and the monitoring information is reported to a base station after the user terminal establishes D2D with a user terminal of an opposite terminal in the cell;
the second information transceiver module is further configured to receive, by the user terminal, a handover notification sent when the base station determines, according to the monitoring information, that the condition for maintaining D2D communication is not satisfied between the user terminal and a user terminal of an opposite end;
and the communication mode switching module is used for switching the D2D communication mode to the cellular network communication mode according to the switching notification by the user terminal.
12. A system for controlling communication modes, comprising a base station according to claim 9 or 10 and a user terminal according to claim 11.
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| CN201510104679.3A CN106034340B (en) | 2015-03-10 | 2015-03-10 | Communication mode control method, base station, user terminal and system |
| PCT/CN2015/084512 WO2016141661A1 (en) | 2015-03-10 | 2015-07-20 | Communication mode control method, base station, user terminal and system |
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| CN201510104679.3A CN106034340B (en) | 2015-03-10 | 2015-03-10 | Communication mode control method, base station, user terminal and system |
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| CN113115395A (en) * | 2016-11-03 | 2021-07-13 | Oppo广东移动通信有限公司 | Method for switching communication mode, terminal equipment and network equipment |
| IL269277B2 (en) | 2017-05-18 | 2023-09-01 | Liveu Ltd | Device, system, and method of wireless multiple-link vehicular communication |
| CN107438258A (en) * | 2017-06-05 | 2017-12-05 | 北京邮电大学深圳研究院 | A kind of communication pattern switching method and device based on user mobility management |
| CN110958637A (en) * | 2019-12-16 | 2020-04-03 | 北京码牛科技有限公司 | Quick response method and system for intelligent cell |
| CN112469057B (en) * | 2020-11-27 | 2022-06-21 | 重庆电讯职业学院 | gNB base station communication control method and device based on D2D reliability |
| CN113301539B (en) * | 2021-07-07 | 2021-11-26 | 北京京东方技术开发有限公司 | Data transmission method, electronic device and computer storage medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103037450A (en) * | 2011-09-29 | 2013-04-10 | 华为技术有限公司 | Method and device for communication mode switching |
| WO2014134831A1 (en) * | 2013-03-08 | 2014-09-12 | Nokia Corporation | Method and apparatus for handover of device-to-device communications |
| CN104080097A (en) * | 2013-03-28 | 2014-10-01 | 富士通株式会社 | Wireless communication system |
| CN104144437A (en) * | 2013-05-08 | 2014-11-12 | 中兴通讯股份有限公司 | Device to device measurement processing method and device |
-
2015
- 2015-03-10 CN CN201510104679.3A patent/CN106034340B/en active Active
- 2015-07-20 WO PCT/CN2015/084512 patent/WO2016141661A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103037450A (en) * | 2011-09-29 | 2013-04-10 | 华为技术有限公司 | Method and device for communication mode switching |
| WO2014134831A1 (en) * | 2013-03-08 | 2014-09-12 | Nokia Corporation | Method and apparatus for handover of device-to-device communications |
| CN104080097A (en) * | 2013-03-28 | 2014-10-01 | 富士通株式会社 | Wireless communication system |
| CN104144437A (en) * | 2013-05-08 | 2014-11-12 | 中兴通讯股份有限公司 | Device to device measurement processing method and device |
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