Background technology
For LTE and LTE-A system, in the relevant criterion such as 3GPP TS36.211/212/213, define, PDCCH (descending control physical channel) is for carrying the dispatch of uplink/downlink sub-carriers channel, be Uplink grant/Downlink grant, and defined relevant signaling information form for different transmission modes.Meanwhile, also define correlation timing relation, be specially: consult shown in Fig. 1 and Fig. 2, in the time of scheduling downlink resource, each PDCCH has dispatched the PDSCH (downlink business physical channel) of this subframe, when ascending resource scheduling, need to retain UE (subscriber equipment) detects control signal and prepares the processing delay of up channel transmission, for example, for FDD system, definition time delay is 3ms (conventionally assert that the transmission time that a subframe takies is 1ms), at n+4 subframe transmission PUSCH (uplink service physical channel), and for TDD system, because be subject to the impact of uplink and downlink timeslot ratio, definition time delay is (k, k >=3) ms, at n+k subframe transmission PUSCH (uplink service physical channel), concrete k value is relevant with time slot ratio, the definition mode of k can be as shown in table 1:
Table 1
Under prior art, the source scheduling mode that system adopts mainly contains two kinds, is respectively dynamic resource scheduling and semi-continuous scheduling of resource:
So-called dynamic resource scheduling, refer to that base station passes through a dispatch grant (scheduling) data transfer (except TDD up/down row configuration 0), and use exclusive C-RNTI (the Cell-RadioNetwork Temporary Identity of UE, Cell Radio Network Temporary Identifier/Identity, Cell-RNTI) CRC in this dispatch (Cyclic Redundancy Check, cyclic redundancy check (CRC) code) is carried out to scrambling.For a UE, in each descending sub frame, can only there be a DL grant and/or a UL grant, as, the DL grant in descending sub frame n is for dispatching the downlink data transmission of this subframe; And for example, for FDD system, UL grant in descending sub frame n is for the transmitting uplink data of dispatching uplink subframe n+4, for TDD system, for up/down row configuration 1~6, UL grant in descending sub frame n is for the transmitting uplink data of dispatching uplink subframe n+k, and wherein the value of k is as shown in table 1; For uplink-downlink configuration 0, if the MSB (highest significant position) in UL index (instruction) information in the UL grant of descending sub frame n is 1, this UL grant is for the transmitting uplink data of dispatching uplink subframe n+k, and wherein k is as shown in table 1; If the LSB (least significant bit) in UL index information is 1, this UL grant is for the transmitting uplink data of dispatching uplink subframe n+7; If MSB and LSB are 1, this UL grant is for the transmitting uplink data of dispatching uplink subframe n+k and n+7.Wherein, multiple radio frames orders are arranged, even in radio frames a, last subframe is k, in radio frames a+1, first subframe is k+1, table 1 with a radio frames for example provided each sub-frame of uplink for the situation of k, wherein n+k > 9, the sub-frame of uplink after representing in a radio frames.
So-called semi-continuous scheduling of resource, first the system that refers to configures the cycle parameter of semi-continuous scheduling by high-level signaling, trigger relevant UL/DL scheduling of resource by dispatch again, effective duration of each UL/DL scheduling of resource triggering is carried out according to pre-configured cycle parameter, for example, if cycle parameter is configured to 20ms, UE assert that the each indicated source scheduling mode term of validity of dispatch sending of system is 20ms; Wherein, the concrete indicating mode of dispatch can be with reference to the dispatch indicating mode under dynamic resource scheduling, difference is, under dynamic resource scheduling, up/down row transfer of data all needs to send a dispatch and dispatches each time, and in semi-continuous scheduling, dispatch of the every transmission of system, can indicate the up/down row transfer of data in setting cycle.Under semi-continuous scheduling of resource, the DCI (Downlink Control Information) carrying in dispatch carries out scrambling by SPS-RNTI (Radio Network Temporary Identifier of semi-continuous scheduling); Up/down row transfer of data is carried out according to the transformat of formulating in standard and resource location, until receive SPS(semi-continuous scheduling) resource release signaling, a SPS finishing scheduling.
Under prior art, dynamic resource scheduling is applicable to transfer of data flexibly, and shortcoming is that the expense of dispatch is larger, therefore, is relatively applicable to the larger business of up/down row volume of transmitted data, because now the expense of dispatch just relatively meets expectation; And semi-continuous scheduling is applicable to stable business, for example, voice service (VoIP), because this type of business has good periodicity and stability.
But along with the enhancing of mobile radio system, the type of service of supporting is also more and more abundanter, for example M2M(machine to machine, machine is to machine), new business possibility transmitted data amount is less, but not as VoIP business, to stablize the duration long periodically again, now, if use dynamic resource scheduling mode, can cause the expense of dispatch excessive, to bring operating load to system, trigger and discharge and use SPS scheduling mode to need to carry out frequently resource, also will cause the expense of dispatch excessive, can bring operating load to system equally.
In view of this, need to redesign a kind of new scheduling of resource indicating mode.
embodiment
For transmitted data amount compared with little and unabiding new business of cycle (as, M2M business), the signaling consumption producing when reducing scheduling of resource, in the embodiment of the present invention, redesign a kind of new resource scheduling indication method: be specially: network side adopts high-level signaling configuration associated transport patten(pattern) and send to UE, then adopt dispatch to dispatch triggering; Compared to dynamic resource scheduling mode, the scheduling mode that the embodiment of the present invention provides is to carry out scheduling of resource according to transmission patten, can once dispatch the packet of multiple subframe transmission; Further, compared to SPS source scheduling mode, fix the effective time of scheduling mode provided by the invention, do not need to carry out resource release, exceedes the effective time of higher level parameters configuration, and resource can discharge automatically.
Below in conjunction with accompanying drawing, the preferred embodiment of the present invention is elaborated.
Consult shown in Fig. 3, in the embodiment of the present invention, network side apparatus (as, base station) comprise the first communication unit 30 and second communication unit 31, wherein,
The first communication unit 30, for send pre-configured transmission patten to UE, this transmission patten is for the relative position of the subframe at least two carrying transmission data of UE instruction;
Second communication unit 31, for sending dispatch at descending sub frame n to described UE, the transmission patten of instruction UE based on descending sub frame n and acquisition, at least two subframe performing data transmissions accordingly.
Based on technique scheme, to consult shown in Fig. 4, in the embodiment of the present invention, it is as follows that network side carries out the detailed process of scheduling of resource instruction:
Step 400: network side sends pre-configured transmission patten to UE, this transmission patten is for the relative position of the subframe at least two carrying transmission data of UE instruction.
For example, suppose the relevant information that comprises 10 subframes in the transmission pattern of network side configuration, transmitting maximum length is 10; Consult shown in Fig. 5, in the embodiment of the present invention, network side by high-level signaling (as, RRC(Radio Resource Control, radio resource control) signaling) the transmission patten of configuration is: { 0,1,6,7}, is illustrated in relative position and is in 0,1,6 and 7 subframe and have transfer of data, so-called transfer of data, for UE, can be the data receiver on descending sub frame, can be also that the data on sub-frame of uplink send, and this point will describe in detail in subsequent embodiment.
In the present embodiment, network side sends pre-configured transmission patten to UE, any one in can be in the following ways, but be not limited only to following implementation:
A, network side adopt Bitmap(bit map by high-level signaling) mode is to UE notification transmission pattern.
For example, be still that { 0,1,6,7} is for example, and while adopting so Bitmap mode to UE notification transmission pattern, network side can indicate selected subframe for { 1100001100} to UE with pre-configured transmission patten;
B, network side are adopted and are expressed relative sequence number mode and notify pre-configured transmission pattern to UE by high-level signaling.
For example, be still { 0,1,6 with pre-configured transmission patten, 7} is example, so, adopts while expressing relative sequence number mode to UE notification transmission pattern, it is { 0,1,6 that network side can be indicated selected subframe to UE, 7, NA, NA, NA, NA, NA, NA}, NA represents non-selected subframe, can be defined as a certain particular values;
Again for example, be still { 0,1 with pre-configured transmission patten, 6,7} is example, so, when relative sequence number mode is expressed in employing to UE notification transmission pattern, it is { 0,1,6 that network side can also be indicated selected subframe to UE, 7, #}, # represents that instruction finishes, and can be defined as a certain particular values or content.
Step 410: network side sends dispatch at descending sub frame n to UE, the transmission patten of instruction UE based on descending sub frame n and acquisition, at least two subframe performing data transmissions accordingly.
In the present embodiment, network side is to send dispatch by the PDCCH of descending sub frame n to UE, and the DCI that this dispatch carries can carry out scrambling by unique identification information of identifying UE by network side employing.Consult shown in Fig. 6, according to correlation standard, the PDCCH of transmitting and scheduling signaling only can be carried on front several OFDM (Orthogonal Frequency Division Multiplexing of descending sub frame n, OFDM) on symbol, other OFDM symbols are used for carrying the business datum of the upper transmission of PDSCH (Physical Downlink Shared Channel), the concrete resource location of business data transmission, the particular location that is PRB (Physical Resource Block) is issued a separate notice by high-level signaling, does not repeat them here.
In the above-described embodiments, as an example of FDD system example (TDD system reference FDD system is carried out corresponding configuration), the concrete executive mode of step 410 is as follows:
If what network side sent to UE at descending sub frame n is descending scheduling signaling, the transmission patten of network side instruction UE based on descending sub frame n and acquisition, determine that network side carries out at least two descending sub frames of downlink data transmission, and on these at least two descending sub frames, receive the downlink data of network side transmission.
For example, consult shown in Fig. 7, the transmission pattern of supposing the system configuration is { 0,1,6,7}, descending scheduling signaling and network side sends to UE at the PUCCH of descending sub frame n, UE is according to the descending sub frame n and the transmission pattern{0 that receive descending scheduling signaling, 1,6,7}, determine network side carry out downlink data transmission descending sub frame be numbered { n+0, n+1, n+6, n+7}, UE will be at descending sub frame n+0, descending sub frame n+1, the upper downlink data that receives network side transmission of descending sub frame n+6 and descending sub frame n+7.
And if network side descending sub frame n to UE send be uplink scheduling signaling, the transmission patten of network side instruction UE based on descending sub frame n and acquisition, with reference to default time delay, determine that UE carries out at least two descending sub frames of transmitting uplink data, and send upstream data to network side on these at least two sub-frame of uplink.
For example, consult shown in Fig. 8, the transmission pattern of supposing the system configuration is { 0, 1, 6, 7}, uplink scheduling signaling and network side sends to UE at the PUCCH of descending sub frame n, UE is according to the descending sub frame n and the transmission pattern{0 that receive uplink scheduling signaling, 1, 6, 7}, process the required default time delay k of uplink scheduling signaling with reference to UE, suppose k=3ms, postpone 3 subframes, determine { the n+4+0 that is numbered to the sub-frame of uplink of network side transmit ascending data, n+4+1, n+4+6, n+4+7}, UE will be at sub-frame of uplink n+4+0, sub-frame of uplink n+4+1, sub-frame of uplink n+4+6 and sub-frame of uplink n+4+7 are upper sends upstream data to network side.
On the other hand, in the above-described embodiments, preferably, after network side execution step 410, in the time that arrive in default effective time, automatically discharge the running time-frequency resource (being PUSCH or PDSCH resource) for carrying out business data transmission.And wait for that send corresponding dispatch to UE next opportunity.
Based on above-described embodiment, in the present embodiment, the Downlink Control Information DCI carrying in the dispatch that network side sends to UE at descending sub frame n, employing can be carried out scrambling by unique identification information of identifying UE, wherein, the configuration mode that this identification information can adopt is including but not limited to several below:
1) reuse existing C-RNTI (identification information using under dynamic resource scheduling), or SPS-RNTI (identification information using under semi-continuous scheduling of resource) is as above-mentioned identification information.
Employing mode 1) when configuration identifier information, because being reuses existing identification information, therefore the multiframe source scheduling mode that the embodiment of the present invention provides, can not enable with dynamic resource scheduling mode and semi-continuous source scheduling mode simultaneously, in the time that system starts dynamic resource scheduling mode and semi-continuous source scheduling mode, the multiframe source scheduling mode that the embodiment of the present invention of should automatically stopping using provides, to avoid the situation that identification information is obscured.
2) use the wireless netting twine temporary mark RNTI of new definition as above-mentioned identification information.
Employing mode 2) when configuration identifier information, owing to being the identification information that adopts new definition, can there is not the situation that identification information is obscured, therefore the multiframe source scheduling mode that the embodiment of the present invention provides, or/and semi-continuous source scheduling mode can be enabled simultaneously, network side can adopt multiple resources scheduling mode to carry out combined dispatching with dynamic resource scheduling mode.
3) reuse existing C-RNTI or SPS-RNTI as above-mentioned identification information, and in DCI, define special field and distinguish mutually with existing occupation mode.
Employing mode 2) when configuration identifier information, although be to reuse existing identification information, but being provided with special title field and existing occupation mode distinguishes, thereby can there is not the situation that identification information is obscured, therefore the multiframe source scheduling mode that the embodiment of the present invention provides, or/and semi-continuous source scheduling mode can be enabled simultaneously, network side can adopt multiple resources scheduling mode to carry out combined dispatching with dynamic resource scheduling mode.
Consult shown in Fig. 7 and Fig. 8, in the embodiment of the present invention, the transfer of data of multiple subframes is triggered by a dispatch, thereby has effectively saved the overhead of generation when system is carried out scheduling of resource, reduce system loading, further, arrive after effective time, system is carried out the release of running time-frequency resource automatically, and without waiting for release signaling, therefore, further save overhead, reduced system loading.Wherein, the transfer of data of the multiple subframes that triggered by a dispatch, the PRB position that the modulation demodulation system of its data and transmission are used is identical.
In practical application, in order to improve the scheduling of resource ability of system, further, permission system is used enhancement mode source scheduling mode, so-called enhancement mode source scheduling mode, be allow multiple subframes of carrying out continuously transfer of data data modem mode and transmission data PRB position not identical, allow to issue multiple dispatch and carry out federated resource scheduling.Be specially: network side is before descending sub frame n sends dispatch to UE, or, at descending sub frame n after described UE sends dispatch, send other dispatchs at other descending sub frames to UE, to carry out federated resource scheduling, so-called other dispatchs can be one or the combination in any in dispatch, the dispatch of dynamic resource scheduling and the dispatch of semi-continuous scheduling of resource of the multiframe scheduling of resource that provides of the embodiment of the present invention.
For example, the multiframe source scheduling mode that the embodiment of the present invention is provided is combined with dynamic resource scheduling mode while use, its concrete combined dispatching mode as shown in Figure 9, the transmission patten that supposing the system issues is { 0,1,6,7}, system issues the dispatch for multiframe scheduling of resource at descending sub frame n to UE, and UE is at descending sub frame { n+0 in instruction, n+1, n+6, the upper downlink data receiving of n+7}, simultaneously, system issues the dispatch for dynamic resource scheduling at descending sub frame n+3 to UE, instruction UE downlink data receiving on descending sub frame n+3.
Again for example, many groups of multiframe source scheduling modes that the embodiment of the present invention is provided are combined while use, combine and use as example taking two groups, its concrete combined dispatching mode as shown in figure 10, two groups of transmission patten that supposing the system issues are respectively { 0, 6, and { 1, 7, 8}, system issues the dispatch 1 for multiframe scheduling of resource at descending sub frame n to UE, UE is at descending sub frame { n+0 in instruction, the upper downlink data receiving of n+6}, simultaneously, system issues the dispatch 2 for multiframe scheduling of resource at descending sub frame n+1 to UE, UE is at descending sub frame { n+1 in instruction, n+7, the upper downlink data receiving of n+7}.
In sum, in the embodiment of the present invention, for novel business demand, design new multiframe source scheduling mode, the transmission patten configuring to UE notice in advance, send dispatch to UE again, make UE in conjunction with the transmission patten obtaining, once realize the transfer of data in the multiple subframes of scheduling, like this, can effectively save and send the overhead that dispatch causes, reduce system operating load, thereby improved systematic function.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if these amendments of the present invention and within modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.