CN102694638A - Transmission method and transmission device of downlink multiframe - Google Patents
Transmission method and transmission device of downlink multiframe Download PDFInfo
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- CN102694638A CN102694638A CN2012101808219A CN201210180821A CN102694638A CN 102694638 A CN102694638 A CN 102694638A CN 2012101808219 A CN2012101808219 A CN 2012101808219A CN 201210180821 A CN201210180821 A CN 201210180821A CN 102694638 A CN102694638 A CN 102694638A
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Abstract
The invention discloses a transmission method and a transmission device of a downlink multiframe, wherein the method comprises the following steps of: setting the positions of slow associated control channel (SACCH) frames and traffic channel (TCH) frames of a plurality of users in the multiframe, and multiplexing the SACCH frame of each user and the TCH frame of other user in the same time slot of the multiframe under a half-rate channel; and sending the multiframe at a preset time slot. Obviously, through adjusting the positions of the SACCH frame and the TCH frame of the multiplexing user, the SACCH frame of the user and the TCH frame of the other user are subjected to multiplexing transmission, that is, the SACCH frame of each user is sent in a staggered way, and the influence on a voice is also reduced as much as possible while the normal transmission of the channel associated signaling of each user is guaranteed.
Description
Technical field
The present invention relates to the mobile communication technology field, relate in particular to a kind of transmission method and device of downlink multiframes.
Background technology
Along with the continuous increase of number of users, the pressure on the voice capacity in the GSM grows with each passing day, this situation in populous area or country performance particularly evident.Along with the continuous development of technology, competition is more fierce simultaneously, and the charge of voice service is in continuous reduction, and the operation commercial city need more effectively utilize hardware and frequency spectrum resource facing to the pressure of cost.
Traditional voice is that user of a time slot allocation uses.If want to increase voice capacity; Promptly on identical resource, carry the more voice of multichannel; Can adopt MUROS (Multi-User Reuse One Slot, multiuser time slot multiplexing) implementation method, promptly be at a time slot and ARFCN (Absolute Radio Frequency Channel Number; Absolute rf channel number) goes up multiplexing a plurality of users, on fixing carrier frequency and frequency spectrum, just can obtain the remarkable increase of capacity like this.
As shown in Figure 1, be MUROS scheme sketch map, the MUROS scheme can provide two subchannel, and two MS (Mobile Station, travelling carriage) are worked on identical Radio Resource.Each MS takies a subchannel, and subchannel is distinguished through the training sequence of quadrature or nearly orthogonal.For traditional C (Circuit Switching, circuit switching) speech business, each pulse (Burst) is given a MS and is used, and GMSK (Gaussian Minimum Shift Keying, GMSK) modulation system is all used in up-downgoing.At up direction; The base station is sent two-way GMSK signal and is produced a type QPSK (Quadrature Phase-Shift Keying; QPSK) signal; Receiving terminal is used as the channel that does not belong to self as interference signal and is eliminated through the mutually orthogonal training sequence and the interference cancellation techniques of enhancing, thereby solves the road signal that belongs to self.At up direction; Two multiplexing MS still use GMSK to be modulated at same time slot and send; The mode demodulation two-way multiplexed signals of SIC (Successive Interface Cancellation) or JD (Joint Detection) is used in the base station; And pass through different TSC (Training Sequence Code, training sequence code) and distinguish two users.
Each TDMA (Time Division Multiple Access; The time division multiple access access) frame comprises 8 basic time slots (slot); Each time slot is exactly a basic physical channel, and each time slot comprises 156.25 code elements, is exactly 156.25 bits for normal burst pulse train.A plurality of tdma frames constitute multi-frame; When some different logical channel multiplexings to physical channel, need utilize these multi-frames, the multiframe period that wherein comprises 26 frames is 120ms not; Be used for Traffic Channel and SACCH thereof (Slow Associated Control Channel; Slow associated control channel), so-called SACCH is meant the control channel at a slow speed with the road with TCH (Traffic Channel, Traffic Channel); It is transmitted in some signalings at a slow speed in the communication process, like Timing Advance, power control etc.Wherein 24 burst sequences are used for business, and 2 burst sequences are used for signaling.
For a user used a full speed channel, 26 multi-frame structure sketch mapes were as shown in Figure 2, and it is the TCH frame that frame number 0～11,13～24 amounts to 24 frames, representes with T among the figure; The frame of frame number 12 is the SACCH frame, representes with A among the figure; The frame of frame number 25 is idle (IDLE) frame, representes with I among the figure.
For two users used two half-rate channels respectively, 26 multi-frame structure sketch mapes were referring to shown in Figure 3, and it is the TCH frame that frame number 0～11,13～24 amounts to 24 frames, and frame number 12 is the SACCH frame with 25 frame, and two SACCH frames are given two users' uses respectively.Among Fig. 3, T1 is user 1 a TCH frame, and T2 is user 2 a TCH frame, and A1 is user 1 a SACCH frame, and A2 is user 2 a SACCH frame.
Yet; The inventor finds in realizing process of the present invention, and multiplexing 2 users on a half-rate channel are when promptly being equivalent on a full speed channel multiplexing 4 users; The position of in one 26 multi-frame, having only two SACCH frames; Use for 4 users' SACCH, therefore, can't satisfy the requirement of descending SACCH frame transmission according to the transmission plan of existing downlink multiframes.
Summary of the invention
The present invention provides a kind of transmission method and device of downlink multiframes, under half-rate channel, carries out the problem that MUROS can not satisfy SACCH frame transmission requirement when multiplexing to solve existing scheme.
For this reason, the embodiment of the invention adopts following technical scheme:
A kind of transmission method of downlink multiframes; When the multiplexing half-rate channel of a plurality of users; Comprise: the position of a plurality of users' in the multi-frame slow associated control channel SACCH frame and Traffic Channel TCH frame is set, the same time slot of other users' the multiplexing multi-frame under half-rate channel of TCH frame among each user's SACCH frame and the said a plurality of user; Send said multi-frame presetting time slot.
A kind of device of controlling the downlink multiframes transmission; When the multiplexing half-rate channel of a plurality of users; Comprise: multi-frame is provided with the unit; Be used for being provided with the position of a plurality of users' of multi-frame slow associated control channel SACCH frame and Traffic Channel TCH frame, with the same time slot of other users' the multiplexing multi-frame under half-rate channel of TCH frame among each user's SACCH frame and the said a plurality of user; The multi-frame transmitting element is used for sending said multi-frame presetting time slot.
A kind of subscriber equipment that receives downlink multiframes when the multiplexing half-rate channel of a plurality of users, comprising: the multi-frame receiving element is used for receiving said multi-frame presetting time slot; The multi-frame resolution unit is used to resolve slow associated control channel SACCH frame and the Traffic Channel TCH frame that said multi-frame obtains said subscriber equipment, wherein, and the multiplexing same time slot of the TCH frame of this SACCH frame and other subscriber equipmenies at the multi-frame under half-rate channel.
It is thus clear that through user's SACCH frame and other users' TCH frame are carried out multiplexing transmission, i.e. each user's the SACCH frame transmission of staggering when having guaranteed each user's the normal transmission of channel associated signalling, has also reduced the influence for voice as far as possible.
Description of drawings
Fig. 1 is a prior art MUROS scheme sketch map;
26 multi-frame structure sketch mapes when Fig. 2 uses full speed channel for the single user of prior art;
26 multi-frame structure sketch mapes when Fig. 3 uses half-rate channel respectively for two users of prior art;
Fig. 4 is the transmission method flow chart of downlink multiframes of the present invention;
Fig. 5 is transmission method embodiment one sketch map of downlink multiframes of the present invention;
Fig. 6 is transmission method embodiment two sketch mapes of downlink multiframes of the present invention;
Fig. 7 controls the apparatus structure sketch map of downlink multiframes transmission for the present invention;
Fig. 8 receives the user device architecture sketch map of downlink multiframes for the present invention.
Embodiment
The embodiment of the invention is through the scheme of the new 26 multi-frames transmission of design; Solve when on a half-rate channel multiplexing a plurality of (for example; 2) user; When promptly being equivalent on the full speed channel multiplexing 4 users, the descending SACCH frame that in one 26 multi-frame, needs to give 4 users uses and the not enough problem of SACCH frame that causes.
Referring to Fig. 4, the transmission method flow chart for embodiment of the invention downlink multiframes comprises:
S401: the position of a plurality of users' in the multi-frame SACCH frame and TCH frame is set, with the same time slot of each user's SACCH frame and other users' the multiplexing multi-frame under half-rate channel of TCH frame;
S402: send said multi-frame presetting time slot.
Thus it is clear that, through with user and the SACCH frame of the users multiplexing transmission of staggering with it, when having guaranteed each user's the normal transmission of channel associated signalling, also reduced influence as far as possible for voice.
In addition, when said SACCH frame and TCH frame multiplexing transmission, can send said SACCH frame and TCH frame respectively with different transmission power.
Preferably, the transmitting power of the transmitting power of SACCH frame greater than the TCH frame multiplexing with it is set.Make the SACCH frame with more high-power emission, can guarantee the correct reception of SACCH frame signaling.
Below in conjunction with multi-frame structure figure, the embodiment of the invention is described in detail.
At first introduce embodiment one.
Suppose that user multiplexing on a half-rate channel is MS1, MS3, multiplexing user is MS2, MS4 on another half-rate channel, 4 users is promptly arranged multiplexing on a full speed channel.
Referring to Fig. 5, be embodiment one sketch map.Wherein, T1 representes the TCH frame of MS1, and T2 representes the TCH frame of MS2, the TCH frame that T3 representes MS3, and T4 representes the TCH frame of MS4, and in like manner, A1 representes the SACCH frame of MS1, and A2 representes the SACCH frame of MS2, the SACCH frame that A3 representes MS3, and A4 representes the SACCH frame of MS4.
It is thus clear that the SACCH frame of MS1 still is employed on the frame of frame number 12 and transmits, be to transmit on 6 the frame at frame number with the SACCH frame of MS3 simultaneously; It is TCH frame multiplexing transmission on the frame of frame number 12 of SACCH frame and the MS3 of MS1; At this moment, also can be provided with between the TCH frame of SACCH frame and MS3 of MS1 and keep the certain power biasing, preferably; The SACCH frame that sends MS1 uses bigger transmitting power, with the correct reception of the signaling that guarantees the SACCH frame.In like manner; For frame 6; The SACCH frame of MS3 and the TCH frame of MS1 multiplexing transmission on the frame of frame number 6 keep the certain power biasing at this moment between the TCH frame of the SACCH frame of MS3 and MS1, preferred; The SACCH frame that sends MS3 uses bigger transmitting power, with the correct reception of the signaling that guarantees the SACCH frame.
In like manner, still send at frame 25 for the SACCH frame of MS2, the SACCH frame of MS4 sends at frame 19 simultaneously.
Need to prove that selection frame 6 as A4, with even transmission SACCH frame, but only is an example as A3, frame 19 among Fig. 5, also can select all the other frames as the SACCH frame, transmission as long as each user SACCH frame of assurance staggers.The multiplexing transmission of SACCH frame and TCH frame; When using than high power transmission, can produce certain influence, may also exert an influence to the adjacent TCH frame of this TCH frame simultaneously for the TCH frame for the correct transmission that guarantees the SACCH frame; When we stagger each user SACCH frame transmission; Let the position of SACCH frame more then can let all affected TCH frames separately, further reduced influence, can not cause the further decline of voice quality because of the stack of influence for voice.
The embodiment of the invention has proposed the scheme of new 26 multi-frames transmission; Make on half-rate channel multiplexing a plurality of (for example; 2) transmission of staggering of user's SACCH frame; Thereby realized when multiplexing two half-rate channels of 4 users, can't guaranteeing the problem of 4 descending SACCH frames transmission of user, when guaranteeing the transmission of SACCH frame, also reduced influence as far as possible for voice.
Introduce embodiment two below.
Suppose that user multiplexing on a half-rate channel is MS1, MS3, multiplexing user is MS2, MS4 on another half-rate channel, 4 users is promptly arranged multiplexing on a full speed channel.
Referring to Fig. 6, be embodiment two sketch mapes.Wherein, T1 representes the TCH frame of MS1, and T2 representes the TCH frame of MS2, the TCH frame that T3 representes MS3, and T4 representes the TCH frame of MS4, and in like manner, A1 representes the SACCH frame of MS1, and A2 representes the SACCH frame of MS2, the SACCH frame that A3 representes MS3, and A4 representes the SACCH frame of MS4.
This moment, the SACCH frame of MS1 still can send at frame 12, and the SACCH frame of MS3 sends at frame 6 simultaneously.For frame 12; The SACCH frame of MS1 and the TCH frame of MS3 multiplexing transmission on the frame of frame number 12, preferred, keep the certain power biasing between the SACCH frame of MS1 and the TCH frame of MS3; The SACCH frame of MS1 uses more high-power transmission, guarantees the correct reception of the signaling of SACCH frame.In like manner for frame 6; The SACCH frame of MS3 and the TCH frame of MS1 multiplexing transmission on the frame of frame number 6, preferred, keep the certain power biasing between the SACCH frame of MS3 and the TCH frame of MS1; The SACCH frame of MS3 uses more high-power transmission, guarantees the correct reception of the signaling of SACCH frame.
The SACCH frame of MS2 is sent at frame 25, and the SACCH frame with MS4 sends at frame 18 simultaneously.
With embodiment one different being, embodiment two has adjusted each user SACCH frame and TCH frame position, and:
(1) the TCH frame of MS1 is multiplexing with the TCH frame of MS3 regularly, the TCH frame of MS2 is multiplexing with the TCH frame of MS4 regularly, also promptly, guarantee that users multiplexing is constant in whole multi-frame.
Specifically referring to Fig. 6, compare with Fig. 5, the transmission location of the TCH frame through adjustment MS3 and MS4 has guaranteed that the TCH frame of MS1 is multiplexing together with the TCH frame of MS3 all the time, the TCH frame of MS2 is multiplexing together with the TCH frame of MS4 all the time.The benefit of doing like this is to have improved the stability of users multiplexing.And/or
(2) all users' SACCH frame is multiplexed into all users' TCH frame, that is, make the SACCH frame to the interference equalization of TCH frame to each user.
Because certain user SACCH frame will carry out multiplexing transmission with another user's TCH frame in the scheme; And the transmitting power of SACCH frame can be bigger; Therefore the TCH frame for multiplexing position will have certain interference; Therefore in embodiment two,, that 4 SACCH frames are multiplexing with 4 users' TCH frame respectively through TCH frame and the SACCH frame position of adjustment MS3 and MS4.
In embodiment one, A1 and T4 are multiplexing, A2 and T4 is multiplexing, A3 and T1 is multiplexing, A4 and T1 are multiplexing, so the SACCH frame only has interference to the TCH frame of MS1 and MS4.In embodiment two, A1 and T3 are multiplexing, A2 and T4 is multiplexing, A3 and T1 is multiplexing, A4 and T2 are multiplexing, make 4 SACCH frames to 4 users' TCH frame interference arranged respectively.It is thus clear that, comparing with embodiment one, embodiment two has avoided among the embodiment one 4 SACCH frames only 2 users' TCH frames to be had interference, lets disturb balancedly more, will further reduce the influence to voice.
The technical scheme of the embodiment of the invention goes for multiplexing a plurality of users on a half-rate channel.The foregoing description is all with multiplexing 2 users on a half-rate channel; Or multiplexing 4 users are the technical scheme of the example elaboration embodiment of the invention on a full speed channel; Multiplexing a plurality of users' technical scheme and multiplexing 2 users' scheme is similar on a half-rate channel, repeats no more.Multiplexing a plurality of users on same time slot, the SACCH frame that is about to different user to guarantee the transmission SACCH frame that staggers, has also reduced the influence for voice in different timeslot multiplex transmission as far as possible when can guarantee the transmission of SACCH frame.
Corresponding with said method; The embodiment of the invention also provides a kind of device of controlling the downlink multiframes transmission; Be used to realize MUROS under the half-rate channel; This device specifically can be meant base station equipment, also can be meant to be positioned at the inner functional entity of base station equipment, can realize through software, hardware or software and hardware combining mode.
Participate in Fig. 7, be control downlink multiframes transmitting device internal structure sketch map, this device comprises that multi-frame is provided with unit 701 and multi-frame transmitting element 702, wherein:
Multi-frame is provided with unit 701, is used for being provided with the position of a plurality of users' of multi-frame SACCH frame and TCH frame, wherein, and with the same time slot of each user's SACCH frame and other users' the multiplexing multi-frame under half-rate channel of TCH frame;
Multi-frame transmitting element 702 is used for sending said multi-frame presetting time slot.
Preferably, this device also comprises:
Transmitting power control unit 703 is used to control the transmitting power of the emission rate of SACCH frame greater than its multiplexing TCH frame.
Further, when said a plurality of users were example with 2 users, this device also can comprise:
Static multiplex control unit 704 is used to adjust each user SACCH frame and TCH frame position, and first user's TCH frame is multiplexing with the second user TCH frame regularly.
Perhaps, this device also can comprise:
Balanced control unit 705 is used to adjust each user SACCH frame and TCH frame position, all SACCH frames is multiplexed into all users' TCH frame.
Need to prove that the concrete use and the preceding method embodiment of the device of control downlink multiframes transmission are similar basically, repeat no more here.
In addition, the embodiment of the invention also provides a kind of device that receives downlink multiframes, and this device specifically can be meant subscriber equipment, also can be meant to be positioned at the inner functional entity of subscriber equipment, can realize through software, hardware or software and hardware combining mode.
Referring to Fig. 8, for receiving the internal structure sketch map of downlink multiframes device, it comprises multi-frame receiving element 801 and SACCH frame acquiring unit 802, wherein:
Visible through the foregoing description; Through user's SACCH frame and other users' TCH frame are carried out multiplexing transmission; Be the transmission of staggering of each user's SACCH frame, when having guaranteed each user's the normal transmission of channel associated signalling, also reduced influence as far as possible for voice.
Preferably, guarantee the certain power biasing when SACCH frame through two users and TCH frame multiplexing transmission, make the SACCH frame, guarantee the correct reception of SACCH frame signaling with more high-power emission.
In addition,, guaranteed that users multiplexing is constant in whole multi-frame, improved the stability of users multiplexing through first user's TCH frame is multiplexing with the second user TCH frame regularly.
And, through all SACCH frames being multiplexed into all users' TCH frame, also making the SACCH frame that the interference equalization of TCH frame is arrived each user, thereby reduced and the multiplexing influence of SACCH frame voice.
One of ordinary skill in the art will appreciate that; The process of the technical scheme of realization the foregoing description can be accomplished through the relevant hardware of program command; Described program can be stored in the read/write memory medium, and this program when carrying out the corresponding step in the said method.Described storage medium can be like ROM/RAM, magnetic disc, CD etc.
The above only is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; Can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.
Claims (14)
1. the transmission method of a downlink multiframes when the multiplexing half-rate channel of a plurality of users, is characterized in that, comprising:
The position of a plurality of users' in the multi-frame slow associated control channel SACCH frame and Traffic Channel TCH frame is set, with the same time slot of other users' the multiplexing multi-frame under half-rate channel of TCH frame among each user's SACCH frame and the said a plurality of user;
Send said multi-frame presetting time slot.
2. according to the said method of claim 1, it is characterized in that, also comprise:
When said SACCH frame and TCH frame multiplexing transmission, send said SACCH frame and TCH frame respectively with different transmission power.
3. according to right 2 said methods, it is characterized in that the transmitting power of said SACCH frame is greater than the transmitting power of the TCH frame multiplexing with it.
4. according to the said method of claim 1, it is characterized in that said a plurality of users comprise two users, is respectively first user and second user.
5. according to the said method of claim 4, it is characterized in that, also comprise:
Adjust each user SACCH frame and TCH frame position, first user's TCH frame is multiplexing with second user's TCH frame regularly.
6. according to claim 1,2,3 or 4 said methods, it is characterized in that, also comprise:
Adjust each user SACCH frame and TCH frame position, each user's SACCH frame is multiplexing with the TCH frame of different user respectively, make the SACCH frame arrive each user to the interference equalization of TCH frame.
7. method according to claim 1 is characterized in that, said a plurality of users comprise four users, is respectively first user, second user, the 3rd user and four-function family.
8. method according to claim 7 is characterized in that, adjusts each user SACCH frame and TCH frame position, and first user's TCH frame is multiplexing with the 3rd user's TCH frame regularly; Second user's TCH frame is multiplexing with the TCH frame at four-function family regularly.
9. device of controlling downlink multiframes transmission when the multiplexing half-rate channel of a plurality of users, is characterized in that, comprising:
Multi-frame is provided with the unit; Be used for being provided with the position of a plurality of users' of multi-frame slow associated control channel SACCH frame and Traffic Channel TCH frame, and with the same time slot of other users' the multiplexing multi-frame under half-rate channel of TCH frame among each user's SACCH frame and the said a plurality of user;
The multi-frame transmitting element is used for sending said multi-frame presetting time slot.
10. according to the said device of claim 9, it is characterized in that, also comprise:
The transmitting power control unit is used to control the transmitting power of the transmitting power of SACCH frame greater than the TCH frame multiplexing with it.
11., it is characterized in that said a plurality of users comprise two users according to claim 9 or 10 said devices, be respectively first user and second user;
Said device also comprises:
The static multiplex control unit is used to adjust each user SACCH frame and TCH frame position, and first user's TCH frame is multiplexing with second user's TCH frame regularly.
12. according to claim 9 or 10 said devices, it is characterized in that, also comprise:
Balanced control unit is used to adjust each user SACCH frame and TCH frame position, and all users' SACCH frame and all users' TCH frame is multiplexing.
13., it is characterized in that said device is base station equipment or is the functional entity that is arranged in base station equipment according to claim 9 or 10 said devices.
14. a subscriber equipment that receives downlink multiframes when the multiplexing half-rate channel of a plurality of users, is characterized in that, comprising:
The multi-frame receiving element is used for receiving said multi-frame presetting time slot;
The multi-frame resolution unit is used to resolve slow associated control channel SACCH frame and the Traffic Channel TCH frame that said multi-frame obtains said subscriber equipment, wherein, and the multiplexing same time slot of the TCH frame of this SACCH frame and other subscriber equipmenies at the multi-frame under half-rate channel.
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| CN106034353A (en) * | 2015-03-10 | 2016-10-19 | 中兴通讯股份有限公司 | Power control method and power control device for pairing single-time-slot adaptive multi-user voice service VAMOS users |
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| FR2724509B1 (en) * | 1994-09-12 | 1996-11-22 | Alcatel Mobile Comm France | CELLULAR RADIOCOMMUNICATION SYSTEM, IN PARTICULAR WITH MOBILE MOBILES, AND CORRESPONDING TRANSMISSION OR RECEPTION DEVICE |
| FI20065866A0 (en) * | 2006-12-29 | 2006-12-29 | Nokia Corp | Data transmission in a mobile communication system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106034353A (en) * | 2015-03-10 | 2016-10-19 | 中兴通讯股份有限公司 | Power control method and power control device for pairing single-time-slot adaptive multi-user voice service VAMOS users |
| CN106034353B (en) * | 2015-03-10 | 2019-11-15 | 中兴通讯股份有限公司 | The circule power control method and device of single time slot adaptive multiuser voice service VAMOS user pairing |
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