CN103067876A - Method for transmitting control information under direct mode operation (DMO) and system thereof - Google Patents
Method for transmitting control information under direct mode operation (DMO) and system thereof Download PDFInfo
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Abstract
The invention provides a method for transmitting control information under direct mode operation (DMO) and a system thereof. The method comprises the following steps that a direct mode special signal control channel (DMSSCH) is set and the channel is taken as a downlink logic channel used to bear the control information; master control UE uses the DMSSCH to send the control information used to declare a resource occupation state to subordinate UE; or the subordinate UE uses the DMSSCH to send the control information used for requesting the resource to the master control UE. By using the method and the system of the invention, the control information transmission under the DMO in a TD-LTE system can be realized.
Description
Technical field
The present invention relates to the trunked mobile communication system technical field, relate in particular to the method and system of control information transmission under the network-off direct-passing pattern.
Background technology
Trunked mobile communication system is a kind of advanced mobile command dispatching system, and the department of commanding and scheduling feature is had relatively high expectations is being brought into play huge effect.Compare with public mobile communication system, trunked mobile communication system has that call proceeding is fast, security reliability is high, the resource utilization high, is particularly suitable for command scheduling.At present, domestic application more widely digital clustering communication system has TETRA, iDEN, GoTa, GT800 etc., and these systems all are based on GSM technology or CDMA technology.
TD SDMA Long Term Evolution (TD-LTE) technology is new generation broadband mobile communication wireless access technology, compare with the wireless access technology of existing 2G, 3G mobile communication system, it has the characteristics such as transmission rate height, little, the high QoS assurance of propagation delay time.Technical at existing TD-LTE, the characteristic of increase group service realizes that TD-LTE wideband digital trunked communication system is the developing direction of trunked communication system.
The network-off direct-passing function is a kind of requisite basic function in the trunked communication system.Therefore, realize that in TD-LTE wideband digital trunked communication system network-off direct-passing is very important.The network-off direct-passing pattern is called again direct-passing mode work (DMO, Direct Mode Operation), and referring to that two or more subscriber equipmenies (UE) do not need just can direct communication through the base station.In trunked communication system, there are many occasions to need the working method of direct mode operation.Great majority are areas of coverage that UE has left network, after UE has left network coverage area, show to exceed service area that so the user just can select the working method of direct mode operation, UE also can enter direct mode operation automatically.Direct mode operation also is a kind of fail-soft operation after breaking down in the base station.
Because do not have the base station under the network-off direct-passing pattern, master control UE need to send the situation that takies that the current resource of other UE is notified in some special control informations, and subordinate UE need to send some special control informations and comes request resource; But, not yet consider the network-off direct-passing function in the standard of LTE system at present, do not provide the transmission that how to realize control information under the network-off direct-passing pattern in the agreement yet.
Summary of the invention
The invention provides the method and system of control information transmission under a kind of network-off direct-passing pattern, can realize in the TD-LTE system under the network-off direct-passing pattern transmission to control information.
Technical scheme of the present invention is achieved in that
The method of control information transmission under a kind of network-off direct-passing pattern comprises:
The special signaling control channel of direct mode operation is set, and with the descending logic channel of this channel as the described control information of carrying;
Master control UE utilizes the special signaling control channel of described direct mode operation to send the control information that is used for the statement occupation condition to subordinate UE, perhaps, subordinate UE utilizes the special signaling control channel of described direct mode operation to send the control information that is used for request resource to master control UE.
The system of control information transmission under a kind of network-off direct-passing pattern arranges the special signaling control channel of direct mode operation in the described system, and this channel is as the descending logic channel of the described control information of carrying; Described system comprises:
Master control UE utilizes the special signaling control channel of described direct mode operation to send the control information that is used for the statement occupation condition to subordinate UE;
Subordinate UE utilizes the special signaling control channel of described direct mode operation to send the control information that is used for request resource to master control UE.
As seen, the method and system of control information transmission under the network-off direct-passing pattern that the present invention proposes, by in network, increasing new logic channel, and by this logic channel bear control information, realized in the TD-LTE system under the network-off direct-passing pattern transmission to control information.
Description of drawings
Fig. 1 is the method flow diagram of control information transmission under the network-off direct-passing pattern that proposes of the present invention;
Fig. 2 is the reference model schematic diagram of network-off direct-passing pattern in the embodiment of the invention;
Fig. 3 is the mapping relations schematic diagram of interchannel in the embodiment of the invention.
Embodiment
The present invention proposes the method for control information transmission under a kind of network-off direct-passing pattern, is the method flow diagram of control information transmission under the network-off direct-passing pattern that proposes of the present invention such as Fig. 1, and the method comprises:
Step 101: the special signaling control channel of direct mode operation (DMSSCH, Direct Mode Special Signal Control Channel) is set, and with the descending logic channel of this channel as the described control information of carrying;
Step 102: master control UE utilizes described DMSSCH to send the control information that is used for the statement occupation condition to subordinate UE, and perhaps, subordinate UE utilizes described DMSSCH to send the control information that is used for request resource to master control UE.
In the said method, the mapping relations between DMSSCH and the descending transmission channel are:
Mapping relations between DMSSCH and the downlink shared transmission channel (DL-SCH).
In the said method, master control UE utilize mode that DMSSCH sends control information to subordinate UE can for:
System Frame Number (SFN) according to radio frames among the DMSSCH calculates, and when SFN mod 4=0, the control information that master control UE produces high level is carried in this radio frames on the predefined subframe, and described control information is transferred to physical layer; By physical layer described control information is sent to subordinate UE.
Further, when SFN mod 4=0, subordinate UE is pass-through to high level with the control information that physical layer receives.
In the said method, subordinate UE utilize mode that DMSSCH sends control information to master control UE can for:
SFN according to radio frames among the DMSSCH calculates, and when SFN mod 4 ≠ 0, the control information that subordinate UE produces high level is carried in this radio frames on the predefined subframe, and described control information is transferred to physical layer; By physical layer described control information is sent to master control UE.
Further, when SFN mod 4 ≠ 0, master control UE is pass-through to high level with the control information that physical layer receives.
Below lifting specific embodiment introduces in detail.
Be the reference model schematic diagram of network-off direct-passing pattern in the embodiment of the invention such as Fig. 2, the subscriber equipment of direct mode operation (DM-UE) links to each other with other DM-UE by air interface, for cluster user provides voice group service, wideband multimedia group service and simple scheduling feature.Communication mode between the DM-UE adopts the DMO Basic Reference Model, is applicable to use the communication of point-to-point between the DM-UE of DM-Uu interface (direct mode air interface) or point-to-multipoint.In above-mentioned model, provide the DM-UE of reference synchronization to be called master control UE, the synchronous DM-UE of any and master control UE is called subordinate UE.
In the present embodiment, for the characteristics of network-off direct-passing, the MAC layer has increased the descending logic channel of special control informations such as carrying occupation condition, request resource in network, be defined as DMSSCH.Under the network-off direct-passing pattern, master control UE utilizes this channel to transmit special control information for other UE, and at this moment, this channel carries the control information of master control UE statement resource occupation; And subordinate UE utilizes this channel to send the control information of request resource to master control UE.
The MAC entity also is responsible for the mapping between descending logic channel and the descending transmission channel, in the embodiment of the invention mapping relations of interchannel as shown in Figure 3, the mapping approach of DMSSCH is: DMSSCH---DL-SCH---Physical Downlink Shared Channel (PDSCH).
Present embodiment is defined in the fixed time control information transmission on the DMSSCH, for example, is defined in the transmission of carrying out control information on the subframe 2, and realizes the sending and receiving of control information in different radio frames, for example:
For master control UE:
When the current DM-UE pattern operation of DM-UE indicates that it is master control UE, operate as follows according to the SFN of radio frames:
If SFN mod is 4=0, master control UE can send some control informations, these high-rise control informations of indicating is carried on the subframe 2 of this radio frames, and control information is sent to physical layer; By physical layer control information is sent to subordinate UE;
If SFN mod 4 ≠ 0, master control UE passes through high level with the control information that physical layer receives subordinate UE transmission.
For subordinate UE:
When the current DM-UE pattern operation of DM-UE indicates that it is subordinate UE, operate as follows according to the SFN of radio frames:
If SFN mod is 4=0, subordinate UE passes through high level with the control information that physical layer receives master control UE transmission;
If SFN mod 4 ≠ 0, subordinate UE is carried on the control information of high level indication on the subframe 2 of this radio frames, and control information is sent to physical layer; By physical layer control information is sent to master control UE.
The present invention also proposes the system of control information transmission under a kind of network-off direct-passing pattern, in this system DMSSCH is set, and this channel is as the descending logic channel of the described control information of carrying; Described system comprises:
Master control UE utilizes described DMSSCH to send the control information that is used for the statement occupation condition to subordinate UE;
Subordinate UE utilizes described DMSSCH to send the control information that is used for request resource to master control UE.
In the said system, the mapping relations between DMSSCH and the descending transmission channel are: the mapping relations between DMSSCH and the DL-SCH.
In the said system, master control UE is used for,
When the SFN of radio frames among DMSSCH mod 4=0, the control information that high level is produced is carried in this radio frames on the predefined subframe, and described control information is transferred to physical layer; By physical layer described control information is sent to subordinate UE;
When the SFN of radio frames among DMSSCH mod 4 ≠ 0, the control information that physical layer is received is pass-through to high level.
In the said system, subordinate UE is used for,
When the SFN of radio frames among DMSSCH mod 4=0, the control information that physical layer is received is pass-through to high level;
When the SFN of radio frames among DMSSCH mod 4 ≠ 0, the control information that high level is produced is carried in this radio frames on the predefined subframe, and described control information is transferred to physical layer; By physical layer described control information is sent to master control UE.
As fully visible, the method and system that the present invention proposes, in network, increased new logic channel, be used for the transmission of special control information under the network-off direct-passing pattern, so that master control UE sends the situation that takies that the current resource of other UE is notified in special control information, subordinate UE sends special control information and comes request resource, thereby guarantees the communication between the UE under the network-off direct-passing pattern.Simultaneously, the present invention has also stipulated the delivery time of special control information, makes UE reach to a certain extent the purpose of economize on electricity.
The above only is preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of making, is equal to replacement, improvement etc., all should be included within the scope of protection of the invention.
Claims (10)
1. the method for control information transmission under the network-off direct-passing pattern is characterized in that described method comprises:
The special signaling control channel of direct mode operation is set, and with the descending logic channel of this channel as the described control information of carrying;
Master control UE utilizes the special signaling control channel of described direct mode operation to send the control information that is used for the statement occupation condition to subordinate UE, perhaps, subordinate UE utilizes the special signaling control channel of described direct mode operation to send the control information that is used for request resource to master control UE.
2. method according to claim 1 is characterized in that, the mapping relations between the special signaling control channel of described direct mode operation and the descending transmission channel are:
Mapping relations between the special signaling control channel of direct mode operation and the downlink shared transmission channel DL-SCH.
3. method according to claim 1 and 2 is characterized in that, described master control UE utilizes the special signaling control channel of direct mode operation to the mode that subordinate UE sends control information to be:
When the system frame number SFN mod 4=0 of radio frames in the special signaling control channel of direct mode operation, the control information that master control UE produces high level is carried in this radio frames on the predefined subframe, and described control information is transferred to physical layer; By physical layer described control information is sent to subordinate UE.
4. method according to claim 3 is characterized in that, described method further comprises:
When the SFN mod 4=0 of radio frames in the special signaling control channel of direct mode operation, subordinate UE is pass-through to high level with the control information that physical layer receives.
5. method according to claim 1 and 2 is characterized in that, described subordinate UE utilizes the special signaling control channel of direct mode operation to the mode that master control UE sends control information to be:
When the SFN mod 4 ≠ 0 of radio frames in the special signaling control channel of direct mode operation, the control information that subordinate UE produces high level is carried in this radio frames on the predefined subframe, and described control information is transferred to physical layer; By physical layer described control information is sent to master control UE.
6. method according to claim 5 is characterized in that, described method further comprises:
When the SFN mod 4 ≠ 0 of radio frames in the special signaling control channel of direct mode operation, master control UE is pass-through to high level with the control information that physical layer receives.
7. the system of control information transmission under the network-off direct-passing pattern is characterized in that, the special signaling control channel of direct mode operation is set in the described system, and this channel is as the descending logic channel of the described control information of carrying; Described system comprises:
Master control UE utilizes the special signaling control channel of described direct mode operation to send the control information that is used for the statement occupation condition to subordinate UE;
Subordinate UE utilizes the special signaling control channel of described direct mode operation to send the control information that is used for request resource to master control UE.
8. system according to claim 7 is characterized in that, the mapping relations between the special signaling control channel of described direct mode operation and the descending transmission channel are: the mapping relations between the special signaling control channel of direct mode operation and the DL-SCH.
9. according to claim 7 or 8 described systems, it is characterized in that described master control UE is used for,
When the SFN mod 4=0 of radio frames in the special signaling control channel of direct mode operation, the control information that high level is produced is carried in this radio frames on the predefined subframe, and described control information is transferred to physical layer; By physical layer described control information is sent to subordinate UE;
When the SFN mod 4 ≠ 0 of radio frames in the special signaling control channel of direct mode operation, the control information that physical layer is received is pass-through to high level.
10. according to claim 7 or 8 described systems, it is characterized in that described subordinate UE is used for,
When the SFN mod 4=0 of radio frames in the special signaling control channel of direct mode operation, the control information that physical layer is received is pass-through to high level;
When the SFN mod 4 ≠ 0 of radio frames in the special signaling control channel of direct mode operation, the control information that high level is produced is carried in this radio frames on the predefined subframe, and described control information is transferred to physical layer; By physical layer described control information is sent to master control UE.
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| CN105591712A (en) * | 2014-10-23 | 2016-05-18 | 普天信息技术有限公司 | Method of indicating control channel in direct mode and terminal |
| CN105634755A (en) * | 2014-11-07 | 2016-06-01 | 普天信息技术有限公司 | DMO terminal time and frequency resource using method and apparatus |
| CN106304006A (en) * | 2016-09-14 | 2017-01-04 | 重庆邮电大学 | A kind of emergency communication system multi-functional terminal end |
| WO2017049930A1 (en) * | 2015-09-21 | 2017-03-30 | 海能达通信股份有限公司 | Resource usage method and terminal |
| CN106604201A (en) * | 2015-10-15 | 2017-04-26 | 普天信息技术有限公司 | Wireless time-frequency resource distribution and indication method of broadband trunked DMO system |
| CN106937255A (en) * | 2015-12-31 | 2017-07-07 | 北京信威通信技术股份有限公司 | Method for transmission processing and device |
| CN107197416A (en) * | 2016-03-14 | 2017-09-22 | 普天信息技术有限公司 | The air interface transmission method and system of a kind of broadband colony offline straight communication |
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| CN104717633A (en) * | 2013-12-11 | 2015-06-17 | 普天信息技术研究院有限公司 | Direct mode operation (DMO) transmission method |
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| CN106604201B (en) * | 2015-10-15 | 2019-10-22 | 普天信息技术有限公司 | A kind of wireless time-frequency resource allocating and indicating means of broadband cluster DMO system |
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| CN107197416A (en) * | 2016-03-14 | 2017-09-22 | 普天信息技术有限公司 | The air interface transmission method and system of a kind of broadband colony offline straight communication |
| CN106304006A (en) * | 2016-09-14 | 2017-01-04 | 重庆邮电大学 | A kind of emergency communication system multi-functional terminal end |
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