CN101001104A - Method of uplink reference signal timing synchronous - Google Patents
Method of uplink reference signal timing synchronous Download PDFInfo
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- CN101001104A CN101001104A CN 200610005586 CN200610005586A CN101001104A CN 101001104 A CN101001104 A CN 101001104A CN 200610005586 CN200610005586 CN 200610005586 CN 200610005586 A CN200610005586 A CN 200610005586A CN 101001104 A CN101001104 A CN 101001104A
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Abstract
This invention discloses a method for selecting radio resources when emitting the synchronous reference signals in the up synchronous operation, in which, the up emission synchronous reference signal can be emitted on the radio resource based on the dispatch or compensation, and radio resources of different principles can be selected based on different states in this invention, which is good for simplification and stabilization of the up synchronous control.
Description
Technical field
The present invention relates to mobile communication system, relate in particular to and use reference signal to carry out the synchronous method of up timing in the moving communicating field.
Background technology
The message transmission rate that following mobile communication system requires to provide will be up to more than the 100Mbit/s, and the business of support also will expand to multimedia service (comprising real-time streaming media service) from speech business.Can realize on limited frequency spectrum resources that two-forty and jumbo technology have become the focus of present research.Wide-band mobile communication system will experience the frequency selectivity of channel usually.The frequency selectivity of so-called channel is exactly the decay difference of channel on different frequency.Frequency-selective channel can cause serious intersymbol interference (ISI), inter-carrier interference (ICI) and multiple access to disturb (MAI) usually.The most frequently used method of contrary frequency selectivity decline is exactly to use the single carrier balancing technique at receiving terminal, and it is divided into single carrier wave time domain balancing technique and single-carrier wave frequency domain equalization technology two big classes.The single carrier wave time domain balancing technique is a kind of mature technique, possesses very strong antijamming capability.Yet the complexity of single carrier wave time domain equalizer and the maximum delay of channel are extended to the proportionate relationship that cube increases, so the single carrier wave time domain equalizer is difficult to realize in some practical application.It is another kind of that balancing technique---single-carrier wave frequency domain equalization technology has overcome the shortcoming of single carrier wave time domain balancing technique.Under frequency selective fading channels, received signal is the convolution that sends signal and channel impulse response on time domain, then is the product that sends signal and channel frequency domain response on frequency domain.According to the channel frequency domain response that channel estimating obtains, the single carrier frequency domain equalization device can carry out equilibrium respectively on each frequency, thereby computation complexity is reduced widely.In theory, the single carrier frequency domain equalization device is the same with the performance of single carrier wave time domain equalizer, and the complexity of its complexity and ofdm system is suitable.
Also has the processing mode of simplifying more for the single carrier frequency domain equalization device, by adding Cyclic Prefix or zero filling for the emission symbol, the linear convolution process of signal and channel is converted into circular convolution, simplified the processing of receiver, as long as the maximum delay of channel expansion energy window is controlled within the CP (cyclic preamble), just can effectively remove user's self intersymbol interference (ISI).
If the time that uplink multi-users is arrived the base station all synchronously within a benchmark CP, just can be united Fourier transform processing with multi-user's received signal, simplified receiver multi-user's processing.
Uplink synchronous control can guarantee that uplink multi-users arrives the time of base station all synchronously within a benchmark CF, the operation of uplink synchronous can be taked up emission synchronous reference signal, the time of advent of the up emission synchronous reference signal of base station measurement, with the reference time ratio, determine that the terminal emission needs the time in advance or that lag behind, then by descending order, with time of needs adjustment also the mode of multi-system or stepping adjustment notify terminal to adjust launch time.
Because the mobility of terminal, the time that arrives the base station is also constantly changing, so must carry out this Synchronization Control process repeatedly, the repetition of Synchronization Control process can be periodic, also can be Event triggered.
Because the difference of the service condition of terminal, cause the processing of uplink synchronizing signals also differently, control procedure can be that periodically small step advances to adjust, and also can be big as required stepping adjustment
Summary of the invention
Technical problem to be solved by this invention takies the method for Radio Resource when being to provide the emission of the up emission synchronous reference signal that is used for uplink synchronous operation under the different conditions, with help the uplink synchronous control procedure succinct, stable, resource consumption is few, adaptive capacity is strong.
For solving the problems of the technologies described above, take the method for resource when the invention provides the emission that a kind of up emission synchronous reference signal that is used for uplink synchronous operation is provided, comprise following feature:
The judgment task state;
Carry out synchronously, initially insert synchronous, professional non-activation (idle) state and attempt synchronously, insert when start and attempt again after the long-time free of data emission in back causes lock-out under the state such as synchronous, the uplink synchronous reference signal is launched on based on the Radio Resource of competing;
When at activation of service and the state (active) of transfer of data is arranged, at activation of service but under free of data transmission (dormant) state of etc.ing, the uplink synchronous reference signal is launched on based on the Radio Resource of dispatching
The emission that is used for the up emission synchronous reference signal of uplink synchronous operation among the present invention can be launched on based on scheduling or the Radio Resource based on competition, select down Radio Resource according to different conditions based on distinct principle, with help the uplink synchronous control procedure succinct, stable, resource consumption is few, adaptive capacity is strong.
Description of drawings
Three kinds of pattern diagram of Fig. 1 data transmission;
Fig. 2 based on the Radio Resource of competition with based on the Radio Resource of scheduling in time domain, multiplexing schematic diagram on (phase place) territory frequently;
Fig. 3 is the inventive method flow chart;
Fig. 4 is the emission of the Radio Resource of this scheduling user data for the uplink synchronous reference signal takies;
Fig. 5 is the emission of the Radio Resource of other scheduling user datas for the uplink synchronous reference signal takies;
The Radio Resource emission that Fig. 6 is independent for the uplink synchronous reference signal takies
Embodiment
The system that the single carrier that inserts based on CP transmits and receives is a kind of up-and-coming communication system that realizes spectral efficient, peak value speed, low peak average ratio under the high bandwidth more.
Fig. 1 has described a kind of mode switch schematic diagram of typical data transmission, data transmission is a substantive characteristics with emission burst (burst), first kind of state is that continuous short burst has constituted long burst, said activation of service and the state (active) of transfer of data is arranged among the present invention just, very brief burst and the frequent switching of mourning in silence have in short-term constituted second kind of state of data transmission, just mention among the present invention at activation of service but free of data transmission (dormant) state, mourning in silence has for a long time constituted the third state of data transmission, and just professional non-activation (idle) state is attempted synchronously among the present invention, inserting the long-time free of data emission in back causes attempting synchronous state again after the lock-out.More than three kinds of states all be state after setting up data transmission, when not setting up data transmission, have two kinds of special states at least promptly: synchronous regime is carried out synchronously, is initially inserted in start.
Fig. 2 has described based on the Radio Resource of competition and based on Radio Resource multiplexing signal on time domain, frequency domain of dispatching, can make a distinction in time based on the Radio Resource of competition and based on the Radio Resource of dispatching, can make a distinction on frequency, both do not intersect mutually yet.All associated users of Radio Resource based on competition can freely take under the situation of not holding consultation, and so just exist the conflict situations of resource between the user.And based on the scheduling Radio Resource be that the associated user is given in centralized dispatching, between the user through consultation the scheduling mode avoid, do not exist the conflict of resource to take situation.The mode of obvious two kinds of utilizations of resources respectively has its merits and demerits, utilization of resources mode based on competition need not prior scheduling, being particularly suitable for not having the start that rule takes place inserts, the initial access, the realization of the access after mourning in silence for a long time, but its shortcoming is to exist the situation of resource contention, can cause receiving the probability of success and reduce, and prolongs problems such as long turn-on time.Utilize mode need realize scheduling based on scheduled resources, the efficient height of realization is particularly suitable for setting up the user of effective connection, but need takies corresponding downstream dispatch resource, increases the processing complexity of centralized dispatching.
Fig. 3 is a flow chart of the present invention, at first the judgment task state; If this moment, the uplink synchronous reference signal was launched on the Radio Resource based on competition when carrying out synchronously, initially inserting synchronous, professional non-activation (idle) state and attempt synchronously, insert the long-time free of data emission in back and cause attempting again after the lock-out state such as synchronous for start; If at activation of service and the state (active) of transfer of data is arranged, at activation of service but under free of data transmission (dormant) state of etc.ing, the uplink synchronous reference signal is launched on based on the Radio Resource of dispatching.
Fig. 4 launches schematic diagram for the uplink synchronous reference signal takies to the Radio Resource of this scheduling user data, and the uplink synchronous reference signal can be carried out time or channeling with the transmission of this user's data, takies the Radio Resource into this user scheduling.Shown in Figure 4 is that synchronizing signal and the party A-subscriber's data of user A are in time carried out multiplexing example.The data of this user A can also can non-NULL for sky.
Fig. 5 takies the schematic diagram of launching into the Radio Resource of other scheduling user datas for the uplink synchronous reference signal, and the uplink synchronous reference signal can be carried out time or channeling with other user's data transmission, takies the Radio Resource into other user's scheduling.Shown in Figure 5 is that synchronizing signal and the party B-subscriber's data of user A are in time carried out multiplexing example, and this piece resource is the B data dispatch.Other user data B can also can non-NULL for sky.
Fig. 6 is that the uplink synchronous reference signal takies independent Radio Resource emission schematic diagram, the uplink synchronous reference signal can be independent of user's data and be transmitted in independently and launch on time and frequency resource, this piece resource is not dispatched the data to Any user, data can be sky, or only transmit user's control signaling.As shown in Figure 6, the uplink synchronous reference signal of user A mark separately not by other user's scheduled resources on launch, the uplink synchronous reference signal of user A can be carried out time-multiplexed with single user or multi-user's control signaling.Obviously the uplink synchronous reference signal of user A also can be carried out channeling with single user or multi-user's control signaling.
Claims (11)
1, the uplink synchronous reference signal can be launched on the Radio Resource based on competition, also can launch on the Radio Resource based on scheduling;
2, according to claim 1, it is characterized in that, described uplink synchronous reference signal is launched on the Radio Resource based on competition, can carry out when comprising the conversion of following operating state: start carries out synchronously, initial insert synchronously, insert attempt again after the long-time free of data emission in back causes lock-out that synchronous, professional unactivated state is attempted when synchronous etc.;
3, according to claim 1, it is characterized in that, described uplink synchronous reference signal is launched on the Radio Resource based on scheduling, can carry out when comprising following state: activation of service and the state of transfer of data is arranged, professional activation of service but the state of free of data transmission;
4, according to claim 1, it is characterized in that, can allow transmitting of each user that collision and conflict are arranged on time-domain, frequency domain based on the Radio Resource of competing;
5, according to claim 1, it is characterized in that, do not allow transmitting of each user that collision and conflict are arranged on time-domain, frequency domain based on the Radio Resource of dispatching;
As described in the claim 3, it is characterized in that 6, described uplink synchronous reference signal can be carried out time or channeling with the transmission of this user's data, takies the Radio Resource into this user scheduling;
As described in the claim 3, it is characterized in that 7, described uplink synchronous reference signal can be carried out time or channeling with other user's data transmission, takies the Radio Resource into other user's scheduling;
As described in the claim 3, it is characterized in that 8, described uplink synchronous reference signal can be independent of user's data and be transmitted in independently and launch on time and frequency resource;
As described in the claim 6, it is characterized in that 9, time or channeling are carried out in described uplink synchronous reference signal and the transmission of this user's data, this user data can be sky;
As described in the claim 7, it is characterized in that 10, time or channeling are carried out in described uplink synchronous reference signal and the transmission of other user's data, other user data can be sky;
11, as described in the claim 8, it is characterized in that described uplink synchronous reference signal can be carried out time or channeling with user's empty data or control signal;
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| CN 200610005586 CN101001104A (en) | 2006-01-11 | 2006-01-11 | Method of uplink reference signal timing synchronous |
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| CN 200610005586 CN101001104A (en) | 2006-01-11 | 2006-01-11 | Method of uplink reference signal timing synchronous |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113037671A (en) * | 2021-03-02 | 2021-06-25 | 哈尔滨工业大学 | Low-complexity efficient SOQPSK symbol timing and phase joint synchronization algorithm |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113037671A (en) * | 2021-03-02 | 2021-06-25 | 哈尔滨工业大学 | Low-complexity efficient SOQPSK symbol timing and phase joint synchronization algorithm |
| CN113037671B (en) * | 2021-03-02 | 2023-12-05 | 哈尔滨工业大学 | Low-complexity efficient SOQPSK symbol timing and phase joint synchronization algorithm |
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