CN105307270A - Data transmission method and system, base station and user equipment - Google Patents
Data transmission method and system, base station and user equipment Download PDFInfo
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- CN105307270A CN105307270A CN201410374272.8A CN201410374272A CN105307270A CN 105307270 A CN105307270 A CN 105307270A CN 201410374272 A CN201410374272 A CN 201410374272A CN 105307270 A CN105307270 A CN 105307270A
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Abstract
The invention discloses a data transmission method, comprising the steps that: a base station establishes an uplink time domain multiplexing physical channel, allocates a fixed physical resource block (PRB) shared by all UE to user equipment (UE) within a time domain period and notifies the fixed physical resource block to the UE; and after receiving the notification, the UE uses the established uplink time domain multiplexing physical channel to transmit data within the time domain period by adopting the fixed PRB shared by all UE. The invention further discloses a base station, UE and a data transmission system.
Description
Technical field
The present invention relates to wireless communication technology, particularly relate to a kind of data transmission method and system, base station and subscriber equipment (UE, UserEquipment).
Background technology
At present, in a wireless communication system, in the process of the discontinuous low rate traffic transfer of data of uplink burst, only need for the smaller Physical Resource Block (PRB of the discontinuous low rate traffic data allocations that happens suddenly, PhysicalResourceBlock) transmission can be realized, but the distribution of this little PRB too much causes a large amount of resource fragmentation will to wireless communication system resource, thus reduces the resource utilization of wireless communication system.
Therefore, the resource fragmentation in how minimizing system, improving resource utilization is current problem demanding prompt solution.
Summary of the invention
For solving the technical problem of existing existence, embodiments provide a kind of data transmission method and system, base station and UE.
Embodiments provide a kind of data transmission method, comprising:
Set up up time-domain multiplexed physical channel, and for UE distributes all UE fixing PRB jointly used in the time domain cycle;
The fixing PRB that the described all UE distributed use jointly is informed to described UE.
In such scheme, described method also comprises:
When needing to adopt physical channel time division multiplexing scheme, send the notice adopting physical channel time division multiplexing scheme to described UE.
In such scheme, described transmission to described UE adopts the notice of physical channel time division multiplexing scheme to comprise:
For described UE distributes time-domain multiplexed Radio Network Temporary Identifier (TFM-RNTI, TimeFieldMultiplexing-RadioNetworkTemporyIdentity), and sent the TFM-RNTI distributed to described UE by wireless heterogeneous networks (RRC, Radioresourcecontrol) signaling.
In such scheme, when defining the fixing PRB that multiple UE adopts described all UE jointly to use simultaneously, described method also comprises:
Notify described UE order of transmission.
In such scheme, describedly notify described UE order of transmission, for:
By UE order of transmission described in uplink authorization (ULGrant) message notice.
The embodiment of the present invention additionally provides a kind of data transmission method, comprising:
The fixing PRB that all UE of notification received distribution use jointly;
The fixing PRB utilizing the up time-domain multiplexed physical channel set up to adopt described all UE jointly to use within the time domain cycle transmits data.
In such scheme, before the described fixing PRB utilizing the up time-domain multiplexed physical channel set up to adopt described all UE jointly to use within the time domain cycle transmits data, described method also comprises:
Receive the notice adopting physical channel time division multiplexing scheme.
In such scheme, the described notice receiving employing physical channel time division multiplexing scheme, for:
The TFM-RNTI of side base station assigns is examined, until the TFM-RNTI of distribution detected in PDCCH.
In such scheme, the described fixing PRB adopting described all UE jointly to use within the time domain cycle transmits data, comprising:
Receive the order of transmission that base station sends;
According to the order of transmission received, the fixing PRB adopting described all UE jointly to use within the time domain cycle transmits data; Or,
Cell Radio Network Temporary Identifier/Identity, Cell-RNTI (C-RNTI, Cell-RadioNetworkTemporaryIdentity) is adopted to carry out scrambling process data block to be sent;
The fixing PRB that data block after scrambling process adopts described all UE jointly to use within the described time domain cycle is transmitted.
The embodiment of the present invention further provides a kind of data transmission method, comprising:
Up time-domain multiplexed physical channel is set up in base station, distributes fixing PRB that all UE use jointly and inform described UE in the time domain cycle for UE;
After described UE is notified, the fixing PRB utilizing the up time-domain multiplexed physical channel set up to adopt described all UE jointly to use within the described time domain cycle transmits data.
In such scheme, described method also comprises:
When needing to adopt physical channel time division multiplexing scheme, base station sends the notice adopting physical channel time division multiplexing scheme to described UE;
Correspondingly, after described UE receives the notice of the employing physical channel time division multiplexing scheme that base station sends, the fixing PRB utilizing the up time-domain multiplexed physical channel set up to adopt described all UE jointly to use within the described time domain cycle transmits data.
In such scheme, described base station sends the notice adopting physical channel time division multiplexing scheme to described UE, comprising:
Described base station is described UE distribution T FM-RNTI, and is sent the TFM-RNTI distributed to described UE by RRC signaling;
Correspondingly, described UE receives the notice of the employing physical channel time division multiplexing scheme that base station sends, for:
The described UE TFM-RNTI that base stations detected is distributed in PDCCH, until detect the TFM-RNTI of distribution.
In such scheme, described method also comprises:
When defining the fixing PRB that multiple UE adopts described all UE jointly to use simultaneously, described base station notifies described UE order of transmission;
Correspondingly, described UE is according to the order of transmission received, and the fixing PRB adopting described all UE jointly to use within the time domain cycle transmits data.
In such scheme, described base station notifies described UE order of transmission, for
Described base station is by UE order of transmission described in ULGrant message notice.
In such scheme, the described fixing PRB adopting described all UE jointly to use within the time domain cycle transmits data, comprising:
Data block to be sent adopts C-RNTI to carry out scrambling process by described UE;
The fixing PRB that data block after scrambling process adopts described all UE jointly to use within the described time domain cycle is transmitted.
The embodiment of the present invention additionally provides a kind of base station, comprising: distribution module and notification module; Wherein,
Described distribution module, for setting up up time-domain multiplexed physical channel, and for UE distributes all UE fixing PRB jointly used in the time domain cycle;
Described notification module, informs to described UE for the fixing PRB jointly used by the described all UE distributed.
In such scheme, described notification module, time also for needs employing physical channel time division multiplexing scheme, sends the notice adopting physical channel time division multiplexing scheme to described UE.
In such scheme, described notification module, also for when defining the fixing PRB that multiple UE adopts described all UE jointly to use simultaneously, notifies described UE order of transmission.
The embodiment of the present invention further provides a kind of UE, comprising: receiver module and transport module; Wherein,
Described receiver module, the fixing PRB that all UE for notification received distribution use jointly;
Described transport module, the fixing PRB adopting described all UE jointly to use within the time domain cycle for utilizing the up time-domain multiplexed physical channel of foundation transmits data.
In such scheme, described receiver module, also for receiving the notice adopting physical channel time division multiplexing scheme; And after receiving the notice adopting physical channel time division multiplexing scheme, described trigger communication module;
Correspondingly, described transport module, for receive described receiver module triggering after, the fixing PRB utilizing the up time-domain multiplexed physical channel set up to adopt described all UE jointly to use within the time domain cycle transmits data.
In such scheme, described transport module, also for receiving the order of transmission that base station sends, and according to the order of transmission received, the fixing PRB adopting described all UE jointly to use within the time domain cycle transmits data.
The embodiment of the present invention additionally provides a kind of data transmission system, comprising: base station and UE; Wherein,
Described base station, for setting up up time-domain multiplexed physical channel, distributing for UE fixing PRB that all UE use jointly and informing described UE in the time domain cycle;
Described UE, for receive described base station notice after, the fixing PRB utilizing the up time-domain multiplexed physical channel set up to adopt described all UE jointly to use within the described time domain cycle transmits data.
In such scheme, described base station, time also for needs employing physical channel time division multiplexing scheme, sends the notice adopting physical channel time division multiplexing scheme to described UE;
Correspondingly, described UE, for receive the employing physical channel time division multiplexing scheme that described base station sends notice after, the fixing PRB utilizing the up time-domain multiplexed physical channel set up to adopt described all UE jointly to use within the described time domain cycle transmits data.
In such scheme, described base station, also for when defining the fixing PRB that multiple UE adopts described all UE jointly to use simultaneously, notifies described UE order of transmission;
Correspondingly, described UE, for receiving the order of transmission that described base station sends; And according to the order of transmission received, the fixing PRB adopting described all UE jointly to use within the time domain cycle transmits data.
The data transmission method that the embodiment of the present invention provides and system, base station and UE, up time-domain multiplexed physical channel is set up in base station, and in the time domain cycle, distributes fixing PRB that all UE use jointly for UE and inform described UE; After described UE is notified, the fixing PRB utilizing the up time-domain multiplexed physical channel set up to adopt described all UE jointly to use within the described time domain cycle transmits data, because UE is that the fixing PRB utilizing the up time-domain multiplexed physical channel set up to adopt all UE of distribution jointly to use within the time domain cycle transmits data, so, effectively can reduce resource fragmentation, improve the utilance of resource.
Accompanying drawing explanation
Fig. 1 is the embodiment of the present invention one data transmission method schematic flow sheet;
Fig. 2 is the subframe structure schematic diagram of transfer of data in the embodiment of the present invention two, three, five, six;
Fig. 3 is the embodiment of the present invention two data transmission method schematic flow sheet;
Fig. 4 is the embodiment of the present invention three data method schematic flow sheet;
Fig. 5 is the embodiment of the present invention four architecture of base station schematic diagram;
Fig. 6 is the embodiment of the present invention five UE structural representation;
Fig. 7 is the embodiment of the present invention six data transmission system structural representation.
Embodiment
In order to understand content of the present invention better, first the present invention introduces the concept of the discontinuous low rate traffic of uplink burst.
Along with the popularization of mobile Internet, various Internet service all needs to realize the mutual of terminal and Internet Server by mobile radio network, particularly at B4G, after even the broadband wireless mobile network of 5G popularizes, mobile radio network will support more Internet service.
Wherein, described Internet service can comprise: QQ business, micro-communication service, web-browsing service, microblogging interactive service, network instant chat business, website log process business etc., the common feature of these Internet services is: data send discontinuous, the time interval sending data calculates with level second, with long evolving system (LTE, the air interface transmission time interval of 1ms LongTermEvolution) is compared, the speed of these Internet services is low, the packet of burst may be very large, also may be very little, but to send once there be data, also to send in time, to avoid the experience perception affecting user.
In 4G, B4G and 5G network system that wireless communication system bandwidth is very large, the resource of distributing for above-mentioned Internet service can be smaller, and such as 2,4 or 8 PRB can carry down these data.At present, in the system bandwidth of 20M, being assigned 100 even in wider system bandwidth, being assigned more PRB for carrying the PRB of the data of the discontinuous low rate traffic of uplink burst, such as system bandwidth is the system of 100M, 200M, 500M.And too much little resource block assignments, then can cause existing in system resource a large amount of resource fragmentation, reduce the utilance of system resource, add the complexity of Resourse Distribute; In addition, the limited probability of control channel can also be increased.
Meanwhile, owing to being synchronization system based on 4G, B4G and 5G network system of timesharing Long Term Evolution (TD-LTE, TimeDivision-LongTermEvolution), namely UE realizes the synchronous of downlink data transmission by monitoring system broadcast; And when carrying out upstream data transmission, if the now uplink of UE is in desynchronizing state, then also need to initiate uplink synchronous process at every turn.Uplink synchronous process comprises the mutual of nearly 4 signaling messages, and at least need the time delay of 50ms, the Internet service that business and continuous data for two-forty send, the signaling consumption that this synchronizing process causes is negligible; But for the Internet service of low rate burst, almost often send a packet, all need to carry out a synchronizing process, this synchronizing process causes a large amount of signaling consumptions to be that system cannot carry.
Although in the prior art, there is the technical scheme solved the problem; Such as in LTE system, for the Internet service being similar to the discontinuous low rate of above-mentioned burst, semi-persistent scheduling (SPS, the Semi-PersistentScheduling) scheme of proposition; Particularly, the network equipment of LTE system is by radio resource control (RRC, RadioResourceControl) signaling is that each UE distributes semi-static Radio Network Temporary Identifier (SPS-RNTI, SPS-RadioNetworkTemporyIdentity), and by the Physical Downlink Control Channel (PDDCH, PhysicalDownlinkControlChannel) of SPS-RNTI scrambling for UE distributes the semi-persistent resource with some cycles.But the SPS scheme existed in prior art just towards single UE, cannot solve the problem of resource fragmentation, can not meet the demand that a large amount of UE carries out above-mentioned Internet service simultaneously.
But in the wireless communication system in future, such as in B4G, 5G system, the UE that a large amount of need send the discontinuous low rate Internet service of burst will be there is.
Therefore, how solving resource fragmentation, and meet a large amount of UE and carry out the discontinuous low rate traffic data of uplink burst simultaneously, is current problem demanding prompt solution.
Based on this, in various embodiment provided by the invention: up time-domain multiplexed physical channel is set up in base station, and in the time domain cycle, distribute for each UE fixing PRB that all UE use jointly and inform each UE; After each UE is notified, the fixing PRB utilizing the up time-domain multiplexed physical channel set up to adopt described all UE jointly to use within the described time domain cycle transmits data.
Below by drawings and the specific embodiments, technical scheme of the present invention is described in further detail.
Embodiment one
The data transmission method that the present embodiment provides, as shown in Figure 1, comprises the following steps:
Step 101, sets up up time-domain multiplexed physical channel, and for UE distributes all UE fixing PRB jointly used in the time domain cycle;
Here, set up up time-domain multiplexed physical channel by base station, and distribute all UE fixing PRB jointly used for each UE in the time domain cycle.
During practical application, base station can according to the state of the load state of self and each UE, such as: the channel status of UE etc. consider, for UE distributes all UE fixing PRB jointly used in the time domain cycle.
Step 102: the fixing PRB that the described all UE distributed use jointly is informed to described UE.
Here, when after the good PRB of base station assigns, the fixing PRB that the described all UE distributed use jointly is informed to each UE, so that the fixing PRB that each UE adopts described all UE jointly to use transmits data.
The fixing PRB that the described all UE distributed use jointly can be informed to described UE by public Physical Downlink Control Channel (PDCCH, PhysicalDownlinkControlChannel) or broadcast signaling by base station.
The method can also comprise:
When needing to adopt physical channel time division multiplexing scheme, base station sends the notice adopting physical channel time division multiplexing scheme to described UE;
Particularly, base station is described UE distribution T FM-RNTI, and is sent the TFM-RNTI distributed to described UE by RRC signaling, like this, after described UE detects TFM-RNTI in PDCCH, just determines to need to adopt physical channel time division multiplexing scheme.
Wherein, describedly need to adopt to be the opportunity of physical channel time division multiplexing scheme: base station defines the transmission of multiple UE needs and to happen suddenly the packet of Internet service of discontinuous low rate.
During practical application, base station notifies that described UE adopts the step of physical channel time division multiplexing scheme to perform before step 101, also can perform with step 101 simultaneously, can also perform after step 101; Similarly, base station notifies that described UE adopts the step of physical channel time division multiplexing scheme can perform before step 102, also can perform after step 102, also can perform with step 102 simultaneously; In other words, base station notifies that described UE adopts the time of implementation of the step of physical channel time division multiplexing scheme not limit.
When defining the fixing PRB that multiple UE adopts described all UE jointly to use simultaneously, the method can also comprise:
Base station notifies described UE order of transmission;
Particularly, base station can by UE order of transmission described in ULGrant message notice.
Here, after notifying described UE order of transmission, after the fixing PRB that described UE adopts the order of transmission of notice and described all UE jointly to use sends data, base station can know it is the data that described UE sends.
Wherein, during practical application, when defining the fixing PRB that multiple UE adopts described all UE jointly to use simultaneously, any process also can not be done in base station, C-RNTI is adopted to carry out scrambling to the data block sent by each UE, in this way, base station also can know that the data received are which UE sends;
The data sent can be the data etc. of the discontinuous low rate traffic of uplink burst.
After this data transfer completes, base station can redefine the time domain cycle of next round transfer of data as required and redistribute PRB.
As can be seen from description above, the data transmission method of the embodiment of the present invention, can think that base station is semi-statically UE Resources allocation.
Embodiment two
The data transmission method that the present embodiment provides, as shown in Figure 2, comprises the following steps:
Step 201: the fixing PRB that all UE of notification received distribution use jointly;
Here, the fixing PRB that described all UE that UE receives the distribution of base station notice use jointly.
Step 202: the fixing PRB utilizing the up time-domain multiplexed physical channel set up to adopt described all UE jointly to use within the time domain cycle transmits data.
Here, before execution step 202, the method can also comprise:
Receive the notice adopting physical channel time division multiplexing scheme;
Wherein, UE receives the notice of the employing physical channel time division multiplexing scheme that base station sends;
Particularly, the UE TFM-RNTI that base stations detected is distributed in PDCCH, until detect the TFM-RNTI of distribution; When the TFM-RNTI of distribution being detected, show that UE receives the notice of the employing physical channel time division multiplexing scheme that base station sends.
The fixing PRB that described employing adopts described all UE jointly to use within the time domain cycle transmits data, comprising:
UE receives the order of transmission that base station sends; According to the order of transmission received, the fixing PRB adopting described all UE jointly to use within the time domain cycle transmits data; Or,
Data block to be sent adopts C-RNTI to carry out scrambling process by UE;
The fixing PRB that data block after scrambling process adopts described all UE jointly to use within the described time domain cycle is transmitted, so that it is the data which UE sends that base station can be identified.
Wherein, UE receives the order of transmission of base station transmission by receiving ULGrant information, in other words, ULGrant message notice UE order of transmission can be passed through in base station.
Because UE has known the fixing PRB that all UE of distribution use jointly, even if so when UE is in desynchronizing state before transmitting data, the fixing PRB that described all UE of distribution still can be used jointly to use carries out transfer of data.Like this, just do not need described UE and to set up complete Signalling exchange flow process between base station synchronous to realize, namely adopt the mode of asynchronous transmission can realize transfer of data yet.Wherein, described data can be: upstream data, such as: the data etc. that can be the discontinuous low rate traffic of uplink burst.
Fig. 3 is the subframe structure schematic diagram of transfer of data, and as shown in Figure 3, during practical application, the time domain cycle can be T=N*Frame-lenrth; Wherein, N represents number, and base station can be arranged as required, is such as set to 4,5 etc.; Frame-lenrth represents frame length, is a protocol specification, is constant.
As can be seen from Figure 3, within the time domain cycle, UE is that unit carries out transfer of data according to frame data; According to time sequencing, in subframe 1 in a frame, transmit data A, data B etc. successively.Within the described time domain cycle, when there being a sub-frame data there is no Successful transmissions, when namely needing to retransmit, then the field (HalfSFN) comprised in the described time domain cycle or the same subframe index+offset position place of single frames (SFN) retransmit.Wherein, be biased and can determine as required; The number of times retransmitted can pre-set; Redundancy versions (RV, RedundancyVersion) required in data retransmission process is determined by signaling, and uses successively according to the number of times retransmitted.
During practical application, when within the described time domain cycle equal for the upstream data of all UE end of transmission, and when not occurring to retransmit, the time domain cycle of next round and the distribution of PRB can be redefined as required, give an example, according to the data cases sent, the time domain cycle of next round and the distribution of PRB can be redefined.
The data transmission method that the embodiment of the present invention provides, can think that base station is semi-statically UE Resources allocation, because UE is that the fixing PRB utilizing the up time-domain multiplexed physical channel set up to adopt all UE of distribution jointly to use within the time domain cycle transmits data, so, effectively can reduce resource fragmentation, improve the utilance of resource.
In addition, because UE has known the fixing PRB that all UE of distribution use jointly, even if so when UE is in desynchronizing state before transmitting data, the fixing PRB that described all UE of distribution still can be used jointly to use carries out transfer of data, even if so when UE is in desynchronizing state before transmitting data, the fixing PRB that described all UE of distribution still can be used jointly to use carries out transfer of data, like this, effectively reduce the resource of synchronous data interaction, reduce the signaling consumption of system.
In addition, because the PRB distributed is the fixing PRB that all UE use jointly, that is, the fixing PRB that each UE all adopts described all UE jointly to use carries out transfer of data, so, meets the demand that multiple subscriber equipment carries out transfer of data.
Embodiment three
The data transmission method that the present embodiment provides, as shown in Figure 4, comprises the following steps:
Step 401: up time-domain multiplexed physical channel is set up in base station, distributes for UE fixing PRB that all UE use jointly and informs described UE in the time domain cycle;
Here, when after the good PRB of base station assigns, the fixing PRB that the described all UE distributed use jointly is informed to each UE, so that the fixing PRB that each UE adopts described all UE jointly to use transmits data.
During practical application, base station can according to the state of the load state of self and each UE, such as: the channel status of UE etc. consider, for UE distributes all UE fixing PRB jointly used in the time domain cycle.
The fixing PRB that the described all UE distributed use jointly can be informed to described UE by public PDCCH or broadcast signaling by base station.
Step 402: after described UE is notified, the fixing PRB utilizing the up time-domain multiplexed physical channel set up to adopt described all UE jointly to use within the described time domain cycle transmits data.
The method can also comprise:
When needing to adopt physical channel time division multiplexing scheme, base station sends the notice adopting physical channel time division multiplexing scheme to described UE;
Correspondingly, after described UE receives the notice of employing physical channel time division multiplexing scheme of base station, the fixing PRB utilizing the up time-domain multiplexed physical channel set up to adopt described all UE jointly to use within the described time domain cycle transmits data.
Particularly, base station is described UE distribution T FM-RNTI, and is sent the TFM-RNTI distributed to described UE by RRC signaling;
The UE TFM-RNTI that base stations detected is distributed in PDCCH, until detect the TFM-RNTI of distribution; When the TFM-RNTI of distribution being detected, show that UE receives the notice of the employing physical channel time division multiplexing scheme that base station sends.
Wherein, describedly need to adopt to be the opportunity of physical channel time division multiplexing scheme: base station defines the transmission of multiple UE needs and to happen suddenly the packet of Internet service of discontinuous low rate.
During practical application, base station notifies that described UE adopts the step of physical channel time division multiplexing scheme can perform before step 401, also can perform with step 401 simultaneously, can also perform after step 401 and before step 402; In other words, compared with step 401, base station notifies that described UE adopts the time of implementation of the step of physical channel time division multiplexing scheme not limit.
The method can also comprise:
When defining the fixing PRB that multiple UE adopts described all UE jointly to use simultaneously, base station notifies described UE order of transmission;
Correspondingly, described UE receives the order of transmission that base station sends; According to the order of transmission received, the fixing PRB adopting described all UE jointly to use within the time domain cycle transmits data.
Wherein, base station can by UE order of transmission described in ULGrant message notice.
After notifying described UE order of transmission, after the fixing PRB that described UE adopts the order of transmission of notice and described all UE jointly to use sends data, base station can know it is the data that described UE sends.
During practical application, when defining the fixing PRB that multiple UE adopts described all UE jointly to use simultaneously, any process also can not be done in base station, C-RNTI is adopted to carry out scrambling to the data block sent by each UE, in other words, data block to be sent adopts Cell Radio Network Temporary Identifier/Identity, Cell-RNTI (C-RNTI, Cell-RadioNetworkTemporaryIdentity) to carry out scrambling process by described UE;
Transmitted by the fixing PRB that data block after scrambling process adopts described all UE jointly to use within the described time domain cycle, in this way, base station also can know that the data received are which UE sends.
Here, because UE has known the fixing PRB that all UE of distribution use jointly, even if so when UE is in desynchronizing state before transmitting data, the fixing PRB that described all UE of distribution still can be used jointly to use carries out transfer of data.Like this, just do not need described UE and to set up complete Signalling exchange flow process between base station synchronous to realize, namely adopt the mode of asynchronous transmission can realize transfer of data yet.Wherein, described data can be: upstream data, such as: the data etc. that can be the discontinuous low rate traffic of uplink burst.
Fig. 3 is the subframe structure schematic diagram of transfer of data, and as shown in Figure 3, during practical application, the time domain cycle can be T=N*Frame-lenrth; Wherein, N represents number, and base station can be arranged as required, is such as set to 4,5 etc.; Frame-lenrth represents frame length, is a protocol specification, is constant.
As can be seen from Figure 3, within the time domain cycle, UE is that unit carries out transfer of data according to frame data; ; According to time sequencing, in subframe 1 in a frame, transmit data A, data B etc. successively.Within the described time domain cycle, when there being a sub-frame data not have Successful transmissions, when namely needing to retransmit, then the same subframe index+offset position place of HalfSFN or SFN comprised in the described time domain cycle retransmits.Wherein, be biased and can determine as required; The number of times retransmitted can pre-set; RV required in data retransmission process determines by signaling, and uses successively according to the number of times retransmitted.
During practical application, when within the described time domain cycle equal for the upstream data of all UE end of transmission, and when not occurring to retransmit, the time domain cycle of next round and the distribution of PRB can be redefined as required, give an example, according to the data cases sent, the time domain cycle of next round and the distribution of PRB can be redefined.
The data transmission method that the embodiment of the present invention provides, can think that base station is semi-statically UE Resources allocation, because UE is that the fixing PRB utilizing the up time-domain multiplexed physical channel set up to adopt all UE of distribution jointly to use within the time domain cycle transmits data, so, effectively can reduce resource fragmentation, improve the utilance of resource.
In addition, because UE has known the fixing PRB that all UE of distribution use jointly, even if so when UE is in desynchronizing state before transmitting data, the fixing PRB that described all UE of distribution still can be used jointly to use carries out transfer of data, even if so when UE is in desynchronizing state before transmitting data, the fixing PRB that described all UE of distribution still can be used jointly to use carries out transfer of data, like this, effectively reduce the resource of synchronous data interaction, reduce the signaling consumption of system.
In addition, because the PRB distributed is the fixing PRB that all UE use jointly, that is, the fixing PRB that each UE all adopts described all UE jointly to use carries out transfer of data, so, meets the demand that multiple subscriber equipment carries out transfer of data.
Embodiment four
For realizing the method that embodiment one provides, the base station that the present embodiment provides, as shown in Figure 5, this base station comprises: distribution module 51 and notification module 52; Wherein,
Distribution module 51, for setting up up time-domain multiplexed physical channel, and for UE distributes all UE fixing PRB jointly used in the time domain cycle;
Notification module 52, informs to described UE for the fixing PRB jointly used by the described all UE distributed.
Wherein, during practical application, distribution module 51 can according to the state of the load state of the base station at self place and each UE, such as: the channel status of UE etc. consider, for UE distributes all UE fixing PRB jointly used in the time domain cycle.
After distribution module 51 distributes PRB, the fixing PRB that the described all UE distributed use jointly is informed to each UE by notification module 52, so that the fixing PRB that each UE adopts described all UE jointly to use transmits data.
The fixing PRB that the described all UE distributed use jointly can be informed to described UE by public PDCCH or broadcast signaling by notification module 52.
Notification module 52, time also for needs employing physical channel time division multiplexing scheme, sends the notice adopting physical channel time division multiplexing scheme to described UE;
Particularly, notification module 52 is described UE distribution T FM-RNTI, and is sent the TFM-RNTI distributed to described UE by RRC signaling, like this, after described UE detects TFM-RNTI in PDCCH, just determines to need to adopt physical channel time division multiplexing scheme.
Wherein, describedly need to adopt to be the opportunity of physical channel time division multiplexing scheme: base station defines the transmission of multiple UE needs and to happen suddenly the packet of Internet service of discontinuous low rate.
Notification module 52, also for when defining the fixing PRB that multiple UE adopts described all UE jointly to use simultaneously, notifies described UE order of transmission;
Particularly, notification module 52 can by UE order of transmission described in ULGrant message notice.
Here, after notifying described UE order of transmission, after the fixing PRB that described UE adopts the order of transmission of notice and described all UE jointly to use sends data, base station can know it is the data that described UE sends.
Wherein, during practical application, when defining the fixing PRB that multiple UE adopts described all UE jointly to use simultaneously, any process also can not be done in base station, C-RNTI is adopted to carry out scrambling to the data block sent by each UE, in this way, base station also can know that the data received are which UE sends;
The data sent can be the data etc. of the discontinuous low rate traffic of uplink burst.
After this data transfer completes, distribution module 51 can redefine the time domain cycle of next round transfer of data as required and redistribute PRB.
As can be seen from description above, the data transmission method of the embodiment of the present invention, can think that base station is semi-statically UE Resources allocation.
During practical application, distribution module 51 can by the central processing unit (CPU in base station, CentralProcessingUnit), digital signal processor (DSP, DigitalSignalProcessor) or programmable logic array (FPGA, Field-ProgrammableGateArray) realize; Notification module 52 can be realized in conjunction with transmitter by CPU, DSP or the FPGA in base station.
Embodiment five
For realizing the method that embodiment two provides, present embodiments provide a kind of UE, as shown in Figure 6, this UE comprises: receiver module 61 and transport module 62; Wherein,
Receiver module 61, the fixing PRB that all UE for notification received distribution use jointly;
Transport module 62, the fixing PRB adopting described all UE jointly to use within the time domain cycle for utilizing the up time-domain multiplexed physical channel of foundation transmits data.
Here, receiver module 61, also for receiving the notice adopting physical channel time division multiplexing scheme; And after receiving the notice adopting physical channel time division multiplexing scheme, trigger communication module 62;
Correspondingly, transport module 62, for receive receiver module 61 triggering after, the fixing PRB utilizing the up time-domain multiplexed physical channel set up to adopt described all UE jointly to use within the time domain cycle transmits data.
Particularly, receiver module 61 TFM-RNTI that base stations detected is distributed in PDCCH, until detect the TFM-RNTI of distribution; When the TFM-RNTI of distribution being detected, show that UE receives the notice of the employing physical channel time division multiplexing scheme that base station sends.
Transport module 62 receives specifically for: UE the order of transmission that base station sends; According to the order of transmission received, the fixing PRB adopting described all UE jointly to use within the time domain cycle transmits data; Or,
C-RNTI is adopted to carry out scrambling process data block to be sent; The fixing PRB that data block after scrambling process adopts described all UE jointly to use within the described time domain cycle is transmitted, so that it is the data which UE sends that base station can be identified.
Wherein, transport module 62 receives the order of transmission of base station transmission by receiving ULGrant information, in other words, ULGrant message notice UE order of transmission can be passed through in base station.
Because UE has known the fixing PRB that all UE of distribution use jointly, even if so when UE is in desynchronizing state before transmitting data, the fixing PRB that described all UE of distribution still can be used jointly to use carries out transfer of data.Like this, just do not need described UE and to set up complete Signalling exchange flow process between base station synchronous to realize, namely adopt the mode of asynchronous transmission can realize transfer of data yet.Wherein, described data can be: upstream data, such as: the data etc. that can be the discontinuous low rate traffic of uplink burst.
Fig. 3 is the subframe structure schematic diagram of transfer of data, and as shown in Figure 3, during practical application, the time domain cycle can be T=N*Frame-lenrth; Wherein, N represents number, and base station can be arranged as required, is such as set to 4,5 etc.; Frame-lenrth represents frame length, is a protocol specification, is constant.
As can be seen from Figure 3, within the time domain cycle, transport module 62 is that unit carries out transfer of data according to frame data; According to time sequencing, in subframe 1 in a frame, transmit data A, data B etc. successively.Within the described time domain cycle, when there being a sub-frame data not have Successful transmissions, when namely needing to retransmit, then the same subframe index+offset position place of HalfSFN or SFN comprised in the described time domain cycle retransmits.Wherein, be biased and can determine as required; The number of times retransmitted can pre-set; RV required in data retransmission process determines by signaling, and uses successively according to the number of times retransmitted.
During practical application, when within the described time domain cycle equal for the upstream data of all UE end of transmission, and when not occurring to retransmit, the time domain cycle of next round and the distribution of PRB can be redefined as required, give an example, according to the data cases sent, the time domain cycle of next round and the distribution of PRB can be redefined.
During practical application, receiver module 61 can be realized in conjunction with receiver by CPU, DSP or the FPGA in UE, and transport module 62 can be realized in conjunction with transmitter by CPU, DSP or the FPGA in UE.
Embodiment six
For realizing the method that embodiment three provides, present embodiments provide a kind of data transmission system, as shown in Figure 7, described system comprises: base station 71 and UE72; Wherein,
Base station 71, for setting up up time-domain multiplexed physical channel, distributing for UE fixing PRB that all UE use jointly and informing UE72 in the time domain cycle;
UE72, for receive base station 71 notice after, the fixing PRB utilizing the up time-domain multiplexed physical channel set up to adopt described all UE jointly to use within the described time domain cycle transmits data.
During practical application, first can set up up time-domain multiplexed physical channel by the distribution module of base station 71, and for UE distributes all UE fixing PRB jointly used in the time domain cycle, then by the notification module of base station 71, the fixing PRB that the described all UE distributed use jointly is informed to UE72; Correspondingly, the notice that can be sent by the receiver module reception base station 71 of UE72, and the fixing PRB utilizing the up time-domain multiplexed physical channel set up to adopt described all UE jointly to use within the described time domain cycle by the transport module of UE72 transmits data.
Here, after base station 71 distributes PRB, the fixing PRB that the described all UE distributed use jointly is informed to each UE, so that the fixing PRB that each UE adopts described all UE jointly to use transmits data.
During practical application, base station 71 can according to the state of the load state of self and each UE, such as: the channel status of UE etc. consider, for UE72 distributes all UE fixing PRB jointly used in the time domain cycle.
The fixing PRB that the described all UE distributed use jointly can be informed to UE72 by public PDCCH or broadcast signaling by base station 71.
Base station 71, time also for needs employing physical channel time division multiplexing scheme, sends the notice adopting physical channel time division multiplexing scheme to UE72;
Correspondingly, UE72, for receive the employing physical channel time division multiplexing scheme that base station 71 sends notice after, the fixing PRB utilizing the up time-domain multiplexed physical channel set up to adopt described all UE jointly to use within the described time domain cycle transmits data.
Wherein, base station 71, specifically for being UE72 distribution T FM-RNTI, and sends the TFM-RNTI distributed to UE72 by RRC signaling;
UE72, specifically for the TFM-RNTI that base stations detected in PDCCH is distributed, until detect the TFM-RNTI of distribution; When the TFM-RNTI of distribution being detected, show that UE72 receives the notice of the employing physical channel time division multiplexing scheme that base station sends.
Wherein, describedly need to adopt to be the opportunity of physical channel time division multiplexing scheme: base station 71 defines the transmission of multiple UE needs and to happen suddenly the packet of Internet service of discontinuous low rate.
During practical application, be UE72 distribution T FM-RNTI by the notification module of base station 71, and sent the TFM-RNTI distributed by RRC signaling to UE72; The TFM-RNTI distributed in base stations detected in PDCCH by the receiver module of UE72 again, until detect the TFM-RNTI of distribution.
Base station 71, also for when defining the fixing PRB that multiple UE adopts described all UE jointly to use simultaneously, notice UE72 order of transmission;
Correspondingly, UE72, for receiving the order of transmission that base station 71 sends; And according to the order of transmission received, the fixing PRB adopting described all UE jointly to use within the time domain cycle transmits data.
Wherein, ULGrant message notice UE72 order of transmission can be passed through in base station 71.
After notice UE72 order of transmission, after the fixing PRB that UE72 adopts the order of transmission of notice and described all UE jointly to use sends data, base station can know it is the data that described UE sends.
During practical application, can by the notification module of base station 71 by ULGrant message notice UE72 order of transmission; Correspondingly, the order of transmission that can be sent by the transport module reception base station 71 of UE72; And according to the order of transmission received, the fixing PRB adopting described all UE jointly to use within the time domain cycle transmits data.
During practical application, when defining the fixing PRB that multiple UE adopts described all UE jointly to use simultaneously, any process also can not be done in base station 71, C-RNTI is adopted to carry out scrambling to the data block sent by each UE, in other words, data block to be sent adopts C-RNTI to carry out scrambling process by UE72; Transmitted by the fixing PRB that data block after scrambling process adopts described all UE jointly to use within the described time domain cycle, in this way, base station 71 also can know that the data received are which UE sends.
Here, because UE72 has known the fixing PRB that all UE of distribution use jointly, even if so when UE72 is in desynchronizing state before transmitting data, the fixing PRB that described all UE of distribution still can be used jointly to use carries out transfer of data.Like this, just do not need between UE72 with base station 71, to set up complete Signalling exchange flow process synchronous to realize, namely adopt the mode of asynchronous transmission can realize transfer of data yet.Wherein, described data can be: upstream data, such as: the data that can be the discontinuous low rate traffic of uplink burst.
Fig. 3 is the subframe structure schematic diagram of transfer of data, and as shown in Figure 3, during practical application, the time domain cycle can be T=N*Frame-lenrth; Wherein, N represents number, and base station can be arranged as required, is such as set to 4,5 etc.; Frame-lenrth represents frame length, is a protocol specification, is constant.
As can be seen from Figure 3, within the time domain cycle, UE72 is that unit carries out transfer of data according to frame data; According to time sequencing, in subframe 1 in a frame, transmit data A, data B etc. successively.Within the described time domain cycle, when there being a sub-frame data not have Successful transmissions, when namely needing to retransmit, then the same subframe index+offset position place of HalfSFN or SFN comprised in the described time domain cycle retransmits.Wherein, be biased and can determine as required; The number of times retransmitted can pre-set; RV required in data retransmission process determines by signaling, and uses successively according to the number of times retransmitted.
During practical application, when within the described time domain cycle equal for the upstream data of all UE end of transmission, and when not occurring to retransmit, base station 71 can redefine the time domain cycle of next round and the distribution of PRB as required, give an example, base station 71 according to the data cases sent, can redefine the time domain cycle of next round and the distribution of PRB.
The data transmission system that the embodiment of the present invention provides, can think that base station is semi-statically UE Resources allocation, because UE is that the fixing PRB utilizing the up time-domain multiplexed physical channel set up to adopt all UE of distribution jointly to use within the time domain cycle transmits data, so, effectively can reduce resource fragmentation, improve the utilance of resource.
In addition, because UE has known the fixing PRB that all UE of distribution use jointly, even if so when UE is in desynchronizing state before transmitting data, the fixing PRB that described all UE of distribution still can be used jointly to use carries out transfer of data, even if so when UE is in desynchronizing state before transmitting data, the fixing PRB that described all UE of distribution still can be used jointly to use carries out transfer of data, like this, effectively reduce the resource of synchronous data interaction, reduce the signaling consumption of system.
In addition, because the PRB distributed is the fixing PRB that all UE use jointly, that is, the fixing PRB that each UE all adopts described all UE jointly to use carries out transfer of data, so, meets the demand that multiple subscriber equipment carries out transfer of data.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt the form of hardware embodiment, software implementation or the embodiment in conjunction with software and hardware aspect.And the present invention can adopt in one or more form wherein including the upper computer program implemented of computer-usable storage medium (including but not limited to magnetic disc store and optical memory etc.) of computer usable program code.
The present invention describes with reference to according to the flow chart of the method for the embodiment of the present invention, equipment (system) and computer program and/or block diagram.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or square frame.These computer program instructions can being provided to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, making the instruction performed by the processor of computer or other programmable data processing device produce device for realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing device, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make on computer or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computer or other programmable devices is provided for the step realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
The above, be only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention, and all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (24)
1. a data transmission method, is characterized in that, described method comprises:
Set up up time-domain multiplexed physical channel, and for user equipment (UE) distributes all UE fixed physical Resource Block PRB jointly used in the time domain cycle;
The fixing PRB that the described all UE distributed use jointly is informed to described UE.
2. method according to claim 1, is characterized in that, described method also comprises:
When needing to adopt physical channel time division multiplexing scheme, send the notice adopting physical channel time division multiplexing scheme to described UE.
3. method according to claim 2, is characterized in that, described transmission to described UE adopts the notice of physical channel time division multiplexing scheme to comprise:
For described UE distributes time-domain multiplexed Radio Network Temporary Identifier TFM-RNTI, and sent the TFM-RNTI distributed to described UE by radio resource control RRC signaling.
4. method according to claim 1, is characterized in that, when defining the fixing PRB that multiple UE adopts described all UE jointly to use simultaneously, described method also comprises:
Notify described UE order of transmission.
5. method according to claim 4, is characterized in that, describedly notifies described UE order of transmission, for:
By UE order of transmission described in uplink authorization ULGrant message notice.
6. a data transmission method, is characterized in that, described method comprises:
The fixing PRB that all UE of notification received distribution use jointly;
The fixing PRB utilizing the up time-domain multiplexed physical channel set up to adopt described all UE jointly to use within the time domain cycle transmits data.
7. method according to claim 6, is characterized in that, before the described fixing PRB utilizing the up time-domain multiplexed physical channel set up to adopt described all UE jointly to use within the time domain cycle transmits data, described method also comprises:
Receive the notice adopting physical channel time division multiplexing scheme.
8. method according to claim 7, is characterized in that, the described notice receiving employing physical channel time division multiplexing scheme, for:
The TFM-RNTI that base stations detected is distributed in PDCCH, until detect the TFM-RNTI of distribution.
9. method according to claim 6, is characterized in that, the described fixing PRB adopting described all UE jointly to use within the time domain cycle transmits data, comprising:
Receive the order of transmission that base station sends;
According to the order of transmission received, the fixing PRB adopting described all UE jointly to use within the time domain cycle transmits data; Or,
Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI is adopted to carry out scrambling process data block to be sent;
The fixing PRB that data block after scrambling process adopts described all UE jointly to use within the described time domain cycle is transmitted.
10. a data transmission method, is characterized in that, described method comprises:
Up time-domain multiplexed physical channel is set up in base station, distributes fixing PRB that all UE use jointly and inform described UE in the time domain cycle for UE;
After described UE is notified, the fixing PRB utilizing the up time-domain multiplexed physical channel set up to adopt described all UE jointly to use within the described time domain cycle transmits data.
11. methods according to claim 10, is characterized in that, described method also comprises:
When needing to adopt physical channel time division multiplexing scheme, base station sends the notice adopting physical channel time division multiplexing scheme to described UE;
Correspondingly, after described UE receives the notice of the employing physical channel time division multiplexing scheme that base station sends, the fixing PRB utilizing the up time-domain multiplexed physical channel set up to adopt described all UE jointly to use within the described time domain cycle transmits data.
12. methods according to claim 11, is characterized in that, described base station sends the notice adopting physical channel time division multiplexing scheme to described UE, comprising:
Described base station is described UE distribution T FM-RNTI, and is sent the TFM-RNTI distributed to described UE by RRC signaling;
Correspondingly, described UE receives the notice of the employing physical channel time division multiplexing scheme that base station sends, for:
The described UE TFM-RNTI that base stations detected is distributed in PDCCH, until detect the TFM-RNTI of distribution.
13. methods according to claim 10, is characterized in that, described method also comprises:
When defining the fixing PRB that multiple UE adopts described all UE jointly to use simultaneously, described base station notifies described UE order of transmission;
Correspondingly, described UE is according to the order of transmission received, and the fixing PRB adopting described all UE jointly to use within the time domain cycle transmits data.
14. methods according to claim 13, is characterized in that, described base station notifies described UE order of transmission, for
Described base station is by UE order of transmission described in ULGrant message notice.
15. methods according to claim 10, is characterized in that, the described fixing PRB adopting described all UE jointly to use within the time domain cycle transmits data, comprising:
Data block to be sent adopts C-RNTI to carry out scrambling process by described UE;
The fixing PRB that data block after scrambling process adopts described all UE jointly to use within the described time domain cycle is transmitted.
16. 1 kinds of base stations, is characterized in that, described base station comprises: distribution module and notification module; Wherein,
Described distribution module, for setting up up time-domain multiplexed physical channel, and for UE distributes all UE fixing PRB jointly used in the time domain cycle;
Described notification module, informs to described UE for the fixing PRB jointly used by the described all UE distributed.
17. base stations according to claim 16, is characterized in that, described notification module, time also for needs employing physical channel time division multiplexing scheme, send the notice adopting physical channel time division multiplexing scheme to described UE.
18. base stations according to claim 16, is characterized in that, described notification module, also for when defining the fixing PRB that multiple UE adopts described all UE jointly to use simultaneously, notify described UE order of transmission.
19. 1 kinds of UE, is characterized in that, described UE comprises: receiver module and transport module; Wherein,
Described receiver module, the fixing PRB that all UE for notification received distribution use jointly;
Described transport module, the fixing PRB adopting described all UE jointly to use within the time domain cycle for utilizing the up time-domain multiplexed physical channel of foundation transmits data.
20. UE according to claim 19, is characterized in that, described receiver module, also for receiving the notice adopting physical channel time division multiplexing scheme; And after receiving the notice adopting physical channel time division multiplexing scheme, described trigger communication module;
Correspondingly, described transport module, for receive described receiver module triggering after, the fixing PRB utilizing the up time-domain multiplexed physical channel set up to adopt described all UE jointly to use within the time domain cycle transmits data.
21. UE according to claim 19, is characterized in that, described transport module, and also for receiving the order of transmission that base station sends, and according to the order of transmission received, the fixing PRB adopting described all UE jointly to use within the time domain cycle transmits data.
22. 1 kinds of data transmission systems, is characterized in that, described system comprises: base station and UE; Wherein,
Described base station, for setting up up time-domain multiplexed physical channel, distributing for UE fixing PRB that all UE use jointly and informing described UE in the time domain cycle;
Described UE, for receive described base station notice after, the fixing PRB utilizing the up time-domain multiplexed physical channel set up to adopt described all UE jointly to use within the described time domain cycle transmits data.
23. systems according to claim 22, is characterized in that,
Described base station, time also for needs employing physical channel time division multiplexing scheme, sends the notice adopting physical channel time division multiplexing scheme to described UE;
Correspondingly, described UE, for receive the employing physical channel time division multiplexing scheme that described base station sends notice after, the fixing PRB utilizing the up time-domain multiplexed physical channel set up to adopt described all UE jointly to use within the described time domain cycle transmits data.
24. systems according to claim 22, is characterized in that, described base station, also for when defining the fixing PRB that multiple UE adopts described all UE jointly to use simultaneously, notify described UE order of transmission;
Correspondingly, described UE, for receiving the order of transmission that described base station sends; And according to the order of transmission received, the fixing PRB adopting described all UE jointly to use within the time domain cycle transmits data.
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