CN102137500B - Method, base station and system for data transmission - Google Patents
Method, base station and system for data transmission Download PDFInfo
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- CN102137500B CN102137500B CN 201010105145 CN201010105145A CN102137500B CN 102137500 B CN102137500 B CN 102137500B CN 201010105145 CN201010105145 CN 201010105145 CN 201010105145 A CN201010105145 A CN 201010105145A CN 102137500 B CN102137500 B CN 102137500B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/02—Selection of wireless resources by user or terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/04—Large scale networks; Deep hierarchical networks
- H04W84/042—Public Land Mobile systems, e.g. cellular systems
- H04W84/047—Public Land Mobile systems, e.g. cellular systems using dedicated repeater stations
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Abstract
The invention discloses a method, a base station and a system for data transmission, which belong to the technical field of communication. The method comprises the following steps of: in a time division duplex (TDD) network, taking initial time of the network as reference by the base station of a cell where relay nodes are arranged, keeping uplink parts of an uplink sub-frame and a special sub-frame on a time line of the cell constant, re-configuring the length of protective time for the special sub-frame on the time line of the cell, taking the downlink parts of the downlink sub-frame and the special sub-frame on the initial time line as reference, delaying the downlink parts of the downlink sub-frame and the special sub-frame of the initial time line after the protective time of the cell is re-configured to obtain a new time line, and performing data transmission with user equipment (UE) or the relay nodes according to the new time line. The base station comprises a processing module and a sending module. The system comprises the base station and the relay node. According to the embodiment of the invention, the protective time and the downlink time for the time line of the cell with the relay nodes are adjusted to avoid interruption.
Description
Technical field
The present invention relates to communication technical field, particularly a kind of method, base station and system of transmitting data.
Background technology
In TDD (Time Division Duplex, time division duplex) network, adopt relaying technique (Relaying) can provide good user to cover and data throughout.At one time, as eNB (enhanced Node Base, the base station) and the relaying back haul link between the relaying Relay node, UE (User Equipment with via node and its service, subscriber equipment) the relaying access link between, when adopting identical frequency band or nearby frequency bands to communicate, if via node sends simultaneously and receives, then the signal of via node transmission can be received by via node oneself again, thereby form the interference to the reception signal of via node, bring winding self-interference (self-backhaul interference) problem.
For fear of the winding self-interference, the time that the time of the data that via node sends at the UE that receives its service and via node send data to the base station at its place need intersect staggers; The time that via node sends data to the UE of its service also needed to intersect to stagger with the time that via node reception base station sends data to it.So at any time via node can not receive simultaneously and send in identical frequency band, thereby does not have winding self-interference problem.
In the communication system, data are that unit assembles and transmits with the subframe.In the TDD system, three class subframe structures are arranged: descending sub frame (D), sub-frame of uplink (U) and special subframe (S).For the base station, descending sub frame is used for the transmission data and gives UE, and sub-frame of uplink is used for receiving the data from UE or via node.Special subframe is used for from descending sub frame comprising descender Dw, guard time GP and ascender Up excessively to sub-frame of uplink that wherein, the length of descender Dw and guard time GP is configurable.Above-mentioned three kinds of subframes are combined in a certain order and have been constituted the timeline structure.Wherein, all descenders in this timeline structure comprise descender in descending sub frame and the special subframe, the structure of forming is called the downgoing time line, all ascenders in this timeline structure comprise ascender in sub-frame of uplink and the special subframe, and the structure of composition is called up timeline.
Laying in the TDD cellular network of via node, after the downgoing time line of residential quarter, via node place arrives via node through propagation delay, via node with this time of advent line be reference, shift to an earlier date a period of time on this basis, downgoing time line as via node, so that the control data division staggers in the descending sub frame when control data division and base station arrive relaying in the via node descending sub frame, thereby the control data of the UE that relaying can be served it send, and can receive the base station again and give its control data.But, with the downgoing time line of via node in advance after, the control data division that the via node emission may occur propagate when arriving the base station can and the up receiving unit of base station overlapping, still can produce interference.
Summary of the invention
In order to solve prior art problems, the embodiment of the invention provides a kind of method, base station and system of transmitting data.Described technical scheme is as follows:
A kind of method of transmitting data, described method comprises:
In the network of time division duplex, for the residential quarter that lays via node, the base station of described residential quarter is reference with the initial time line of described network, keep the ascender of the sub-frame of uplink of timeline of described residential quarter and special subframe constant, reconfigure the length of guard time in the special subframe of timeline of described residential quarter, and descending sub frame and the descender in the special subframe with the initial time line of described network are reference, postpone the descending sub frame that reconfigures the timeline behind the guard time of described residential quarter and the descender in the special subframe, obtain the new timeline of described residential quarter;
Transfer of data is carried out according to described new timeline and subscriber equipment or described via node in described base station;
Wherein, reconfigure the length of guard time in the special subframe of timeline of described residential quarter, comprising:
Keep the length sum of descender in the described special subframe and guard time constant, the length that prolongs described guard time.
A kind of base station is arranged in the network of time division duplex, and cloth is placed with via node in the residential quarter of described base station service, and described base station comprises:
Processing module, the initial time line that is used for described network is reference, keep the ascender of the sub-frame of uplink of timeline of described residential quarter and special subframe constant, reconfigure the length of guard time in the special subframe of timeline of described residential quarter, and descending sub frame and the descender in the special subframe with the initial time line of described network are reference, postpone the descending sub frame that reconfigures the timeline behind the guard time of described residential quarter and the descender in the special subframe, obtain the new timeline of described residential quarter;
Sending module is used for carrying out transfer of data according to described new timeline and subscriber equipment or described via node;
Wherein, described processing module reconfigures the length of guard time in the special subframe of timeline of described residential quarter, comprising:
Keep the length sum of descender in the described special subframe and guard time constant, the length that prolongs described guard time.
A kind of system of transmitting data, described system is arranged in the network of time division duplex, comprising: base station and via node, and laid described via node in the residential quarter of described base station service;
Described base station, the initial time line that is used for described network is reference, keep the ascender of the sub-frame of uplink of timeline of described residential quarter and special subframe constant, reconfigure the length of guard time in the special subframe of timeline of described residential quarter, and descending sub frame and the descender in the special subframe with the initial time line of described network are reference, postpone the descending sub frame that reconfigures the timeline behind the guard time of described residential quarter and the descender in the special subframe, obtain the new timeline of described residential quarter; Also be used for carrying out transfer of data according to described new timeline and subscriber equipment or described via node;
Described via node, be used for after the descender of the new timeline of described base station is propagated the described via node of arrival, with described descender time of advent be reference, the time of appointment in advance is as the position of the descender of the timeline of described via node, it is not overlapping to make that control data division in the descending sub frame of new timeline of control data division in the descending sub frame of timeline of described via node and described base station arrives behind the described via node, also is used for carrying out transfer of data according to the timeline after the fixed time in advance and described base station or subscriber equipment;
Wherein, described base station reconfigures the length of guard time in the special subframe of timeline of described residential quarter, comprising:
Keep the length sum of descender in the described special subframe and guard time constant, the length that prolongs described guard time.
The embodiment of the invention is by carrying out the adjustment of timeline to the residential quarter that lays via node, reached and eliminated the purpose of disturbing, need not the timeline of the residential quarter that do not lay via node is adjusted, avoided the timeline of all residential quarters in the network is adjusted, greatly saved resource, avoid the wasting of resources, reduced maintenance cost and complexity.
Description of drawings
Fig. 1 is the timeline structural representation that the embodiment of the invention provides;
Fig. 2 is the transmission data method flow chart that the embodiment of the invention provides;
Fig. 3 is two residential quarter timeline alignment schematic diagrames that the embodiment of the invention provides;
Fig. 4 is the detail flowchart of the transmission data method that provides of the embodiment of the invention;
Fig. 5 is the structural representation of each timeline in the transmission data method that provides of the embodiment of the invention;
Fig. 6 is the architecture of base station figure that the embodiment of the invention provides;
Fig. 7 is the transmission data system structure chart that the embodiment of the invention provides.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, embodiment of the present invention is described further in detail below in conjunction with accompanying drawing.
Timeline in the embodiment of the invention comprises descending sub frame D, special subframe S and sub-frame of uplink U as shown in Figure 1.Wherein, a descending sub frame can be divided into two parts in time, and previous section is the control data division, is shown as the dash area of intersection among the figure, and aft section is the downlink service data part, is shown as the blank parts in the D among the figure.Special subframe can be divided into three parts, and previous section is descender Dw, comprises descending control data division and downlink service data part, and is identical with the structure of descending sub frame, and mid portion is a segment protect time GP, and aft section is ascender Up.When needing a special subframe during excessively to sub-frame of uplink from descending sub frame.The ascender length of special subframe is more fixing, but these those long the mutually adjusting that disappear of the length of descender and guard time, and both length sums cut its ascender length for the special subframe total length.Interval between any two sub-frame of uplink or the descending sub frame original position is the length of an integer subframe; Continuous descending sub frame comprises the descender of special subframe, between and sub-frame of uplink continuously, comprise the ascender of special subframe, between very close to each other.
Referring to Fig. 2, the embodiment of the invention provides a kind of sequential control method, comprising:
201: in the TDD network; for the residential quarter that lays via node; the base station of this residential quarter is reference with the initial time line of TDD network; keep the ascender of the sub-frame of uplink of timeline of this residential quarter and special subframe constant; reconfigure the length of guard time in the special subframe of timeline of this residential quarter; and descending sub frame and the descender in the special subframe with the initial time line of TDD network are reference; postpone the descending sub frame that reconfigures the timeline behind the guard time of this residential quarter and the descender in the special subframe, obtain the new timeline of this residential quarter.
Initial time line in the embodiment of the invention refers to, the identical timeline of arranging for all residential quarters when the TDD network is initial.Configured the length of the guard time GP of special subframe in this initial time line.If do not lay via node in this TDD network, then the timeline of all residential quarters is absolute time alignment, namely from natural time, in all residential quarters align in the border of each subframe, and or all be descending sub frame, perhaps all be sub-frame of uplink, perhaps all be special subframe.As shown in Figure 3, the timeline absolute time of residential quarter A and residential quarter B alignment.Otherwise, if residential quarter A is ascender, residential quarter B is descender in the identical moment, residential quarter A will receive terminal upstream data and the residential quarter B base station down data of own residential quarter simultaneously so, only be own cell terminal upstream data and residential quarter A wants, then the downlink data of residential quarter B can constitute interference.
For the length configuration of guard time GP, generally by the size of each residential quarter, perhaps determined by the distance between the base station of two residential quarter correspondences of equal valuely.Its basic demand is: when the downlink data emission of residential quarter A, comprise the descender of descending sub frame and special subframe, when arriving residential quarter B through propagation delay, can not receive with the upstream data of residential quarter B, the ascender that comprises sub-frame of uplink and special subframe has overlappingly, otherwise interference is arranged.Suppose that distance is L (rice) between the base station of the base station of residential quarter A and residential quarter B, i.e. the about L/2 rice of each radius of society, the wireless electromagnetic velocity of wave propagation is C=3.0*10
8Meter per second, then guard time GP is at least L/C second.Generally in order to improve resource utilization, GP preferably can just satisfy does not have interference to get final product, so that special subframe descender Dw is long as far as possible, to be used for transmitting data.
202: transfer of data is carried out according to the above-mentioned new timeline that obtains and UE or via node in the base station of this residential quarter, and wherein, this transmission comprises and sends and receive.
Said method is by carrying out the adjustment of timeline to the residential quarter that lays via node, reached and eliminated the purpose of disturbing, and need not the timeline of the residential quarter that do not lay via node is adjusted, avoided the timeline of all residential quarters in the network is adjusted, greatly saved resource, avoid the wasting of resources, reduced maintenance cost and complexity.
In the said method; particularly; 201 can realize in the following manner: reconfigure guard time GP and postpone the descending sub frame that reconfigures the timeline behind the guard time of this residential quarter and the descender in the special subframe; when making the descender of the descending sub frame of new timeline of this residential quarter and special subframe arrive neighbor cell by time delay; not overlapping with the ascender of the sub-frame of uplink of the timeline of this neighbor cell and special subframe; and when making the descender of the descending sub frame of timeline of neighbor cell and special subframe arrive this residential quarter by time delay; not overlapping with the ascender of the sub-frame of uplink of the new timeline of this residential quarter and special subframe; when also making descending control data division in the descending sub frame of timeline of via node arrive this residential quarter by time delay, not overlapping with the ascender of the sub-frame of uplink of the new timeline of this residential quarter and special subframe.
Referring to Fig. 4, the sequential control method that the embodiment of the invention provides can specifically comprise:
401: for the residential quarter that lays via node in the TDD network; the base station of this residential quarter is reference with the initial time line of TDD network; keep the ascender of the sub-frame of uplink of timeline of this residential quarter and special subframe constant; reconfigure the length of guard time in the special subframe of timeline of this residential quarter; and descending sub frame and the descender in the special subframe with the initial time line of TDD network are reference; postpone the descending sub frame that reconfigures the timeline behind the guard time of this residential quarter and the descender in the special subframe; obtain the new timeline of this residential quarter; when making the descender of the descending sub frame of new timeline of this residential quarter and special subframe arrive neighbor cell by time delay; not overlapping with the ascender of the sub-frame of uplink of the timeline of this neighbor cell and special subframe; and when making the descender of the descending sub frame of timeline of neighbor cell and special subframe arrive this residential quarter by time delay; not overlapping with the ascender of the sub-frame of uplink of the new timeline of this residential quarter and special subframe; when also making descending control data division in the descending sub frame of timeline of via node arrive this residential quarter by time delay, not overlapping with the ascender of the sub-frame of uplink of the new timeline of this residential quarter and special subframe.
Wherein, the initial time line of TDD network is generally and sets in advance, and the length that the initial time line comprises the guard time GP of setting special subframe wherein is set.Particularly, can be referring to the TDD initial network timeline among Fig. 5, i.e. the timeline structure of first row.Usually, when initial with the TDD network in the timeline absolute time alignment of all residential quarters.
In the present embodiment, particularly, with the length prolongation of guard time GP; namely shorten the length of descender Dw in the special subframe; and the length sum of GP and Dw is constant, as the timeline behind the cell re-configuration Dw/GP that lays via node among Fig. 5, namely second the row the timeline structure.
Preferably, the length that disposes guard time GP in the special subframe of timeline of this residential quarter is at least: (Tc+ τ-2*Tp+L/C) second; Wherein, Tc is the length of control data division in the descending sub frame of via node, and to be via node be transformed into change-over time of accepting state from the transmission state to τ, and Tp be the propagation delay that via node is arrived in the base station of this residential quarter.L is the spacing between the base station of the base station of a residential quarter and another residential quarter, and unit is rice, and C is the wireless electromagnetic velocity of wave propagation, and C=3.0*10
8Meter per second.Time τ is the consideration for hardware, and via node can not be transformed into accepting state immediately from the transmission state, needs certain change-over time, therefore, prolongs this time, reserves the corresponding time so that send out the conversion of receipts state to via node.In the present embodiment, τ is the number greater than 0, and along with the development of technology, the τ value can reach 0, when τ is 0, still is applicable to the technical scheme in the embodiment of the invention.
The length that this step prolongs guard time is in order to prevent under the constant prerequisite of the ascender of special subframe and sub-frame of uplink, postpones the descender of descending sub frame and special subframe and causes the too short situation of GP to take place.
In the present embodiment, when the via node that lays when the residential quarter is a plurality of, according to above-mentioned formula: (Tc+ τ-2*Tp) second, for each via node in these a plurality of via nodes calculates a time value, in all time values that obtain, select maximum, descending sub frame and the descender in the special subframe of the timeline of this residential quarter postponed this maximum at least.
Preferably, the descending sub frame and the descender in the special subframe that reconfigure the timeline behind the guard time that postpones this residential quarter was at least (Tc+ τ-2*Tp) second; Wherein, Tc is the length of control data division in the descending sub frame of via node, and to be via node be transformed into change-over time of accepting state from the transmission state to τ, and Tp be the propagation delay that via node is arrived in the base station of this residential quarter.Particularly, can be with reference to the timeline structure behind the fixing up time delay downgoing time in the residential quarter that lays via node among the figure 5, the i.e. structure of the third line timeline among the figure.Be not consider that with retardation the situation of Tp describes among the figure, this moment Tp=0, Up and U remain unchanged, each D, Dw all postpone backward, therefore, after first D, Dw among the figure postpones, shortened the length of GP in the special subframe, be shown as the GP of diagonal line hatches part left among the figure, correspondingly, after the D subframe delay that the U subframe is closelyed follow, its front is vacant to have gone out corresponding GP, be shown as the GP of diagonal line hatches part to the right among the figure, the length of GP before the length sum of two GP of place equals to postpone (GP in second row).
In the present embodiment; when the via node that lays when above-mentioned residential quarter is a plurality of; according to above-mentioned formula: (calculated a time value for each via node in these a plurality of via nodes in Tc+ τ-2*Tp+L/C) second; in all time values that obtain, select maximum, the length of guard time in the special subframe that reconfigures the timeline behind the guard time of this residential quarter is postponed this maximum at least.
402: transfer of data is carried out according to this new timeline and UE or via node in the base station of this residential quarter, and this transmission comprises and sends and receive.
In the present embodiment, owing to laid via node in the above-mentioned residential quarter, this via node also has the timeline of oneself as the residential quarter of base station identity service.At this moment, its timeline can not be again and its base station, place timeline alignment, because for the base station at its place, it is the identity of UE.And, via node is in the descending sub frame of own residential quarter, to finish the UE that control data division in the own cell downlink subframe is sent to its service earlier, and then finish the reception base station and issue its data, the control data division of via node comprises control data division and business datum part, so need stagger with the control data division of base station.Therefore, further, said method can also comprise:
403: when the descender of the new timeline of the base station of above-mentioned residential quarter propagate arrive described via node after, via node is reference with this descender time of advent, the time of appointment in advance is as the position of the descender of the timeline of via node, obtain the new timeline of via node, it is not overlapping to make that control data division in the descending sub frame of new timeline of control data division in the descending sub frame of timeline of via node and base station arrives behind the via node, further, via node carries out transfer of data according to oneself new timeline and above-mentioned base station and UE, and this transmission comprises and receives and send.
Particularly, with reference to figure 5, the timeline structure of fourth line is the above-mentioned base station that lays the residential quarter of via node, after new timeline transmission data, this new timeline arrives the result behind the via node, owing in transmission course, have time delay, therefore, can prolong a period of time backward after this new timeline arrives.Fifth line timeline structure among the figure is after via node shifts to an earlier date descender, the new timeline that obtains, because via node is reference with new timeline descender time of advent of base station, therefore, as can be seen from the figure, the new timeline of fourth line base station arrives the result behind the via node in the figure, and the new timeline of fifth line via node has shifted to an earlier date a period of time among the figure.Make control data division in the descending sub frame of timeline of via node in advance by this, not overlapping with the control data division in the descending sub frame of the timeline of base station.
In the present embodiment, application scenarios can also be LTE (Long Term Evolution, the 3GPP Long Term Evolution)/LTE-A (Long Term Evolution Advanced, senior Long Term Evolution) TDD network, in this TDD network, the length of a subframe is 1 millisecond, and is made up of 14 OFDM (Orthogonal Frequency Division Multiplexing, OFDM) symbol.Wherein, the value of the Dw of special subframe, GP and Up is specially an integer symbol lengths.In addition, the subframe control data division length of via node reception base station data is 1 or 2 symbols.Suppose that all via nodes in the residential quarter are used for receiving that control data division maximum length is k (k=1 in the subframe of base station data, 2) individual symbol, and the base station spacing of two residential quarters is L rice in this TDD network, then preferably, the GP total length that this residential quarter reconfigures is at least k symbol lengths+τ+L/C second, and wherein, τ is via node is transformed into accepting state from the transmission state change-over time, C is the wireless electromagnetic velocity of wave propagation, and C=3.0*10
8Meter per second.
The said method that present embodiment provides is by carrying out the adjustment of timeline to the residential quarter that lays via node, reached and eliminated the purpose of disturbing, need not the timeline of the residential quarter that do not lay via node is adjusted, avoided the timeline of all residential quarters in the network is adjusted, greatly save resource, avoided the wasting of resources, reduced maintenance cost and complexity, simple to operate, realize easily.For the residential quarter that does not lay via node, need not to adjust the timeline of this residential quarter, the timeline of the residential quarter that does not have via node is not affected, thereby these residential quarters do not have the wasting of resources, and whole network operation complexity reduce.Can prevent under the constant prerequisite of the ascender of special subframe and sub-frame of uplink by the length that prolongs GP, prolong the descender of descending sub frame and special subframe and cause the too short situation of GP to take place.The residential quarter makes the control data division of the descending sub frame that via node sends propagate when arriving the base station by postponing the descender of descending sub frame and special subframe, not can with the up receiving unit overlaid of base station, disturb thereby avoid producing.Via node with descender in advance after, make control data division in the descending sub frame of timeline of via node, not overlapping with the control data division in the descending sub frame of the timeline of base station, avoid producing and disturb.
Referring to Fig. 6, the embodiment of the invention also provides a kind of base station, is arranged in the TDD network, and cloth is placed with via node in the residential quarter of this base station service, and this base station comprises:
In the present embodiment, under first kind of implementation, processing module 601 can be used for:
The descending sub frame that reconfigures the timeline behind the guard time of this residential quarter and the descender in the special subframe are postponed to be (Tc+ τ-2*Tp) second at least; And/or,
The length that disposes guard time in the special subframe of timeline of this residential quarter is at least: (Tc+ τ-2*Tp+L/C) second;
Wherein, Tc is the length of control data division in the descending sub frame of via node, τ is via node is transformed into accepting state from the transmission state change-over time, Tp is that the base station of this residential quarter is to the propagation delay of via node, L is the spacing between the base station of the base station of a residential quarter and another residential quarter, unit is rice, and C is the wireless electromagnetic velocity of wave propagation, and C=3.0*10
8Meter per second.
In the present embodiment, under second kind of implementation, processing module 601 can be used for:
When the via node that lays when this residential quarter is a plurality of, according to (Tc+ τ-2*Tp) be that each via node calculates a time value second, in all time values that obtain, select maximum, the descending sub frame and the descender in the special subframe that reconfigure the timeline behind the guard time of this residential quarter postponed this maximum at least; And/or,
When the via node that lays when this residential quarter is a plurality of, according to (Tc+ τ-2*Tp+L/C) be that each via node calculates a time value second, in all time values that obtain, select maximum, the length of guard time in the special subframe of the timeline of this residential quarter is postponed this maximum at least;
Wherein, Tc is the length of control data division in the descending sub frame of via node, τ is via node is transformed into accepting state from the transmission state change-over time, Tp is that the base station of this residential quarter is to the propagation delay of via node, L is the spacing between the base station of the base station of a residential quarter and another residential quarter, unit is rice, and C is the wireless electromagnetic velocity of wave propagation, and C=3.0*10
8Meter per second.
In the present embodiment; the processing module 601 concrete initial time lines that are used for the TDD network are reference; keep the ascender of the sub-frame of uplink of timeline of this residential quarter and special subframe constant; reconfigure the length of guard time in the special subframe of timeline of this residential quarter; and descending sub frame and the descender in the special subframe with the initial time line of TDD network are reference; postpone the descending sub frame that reconfigures the timeline behind the guard time of this residential quarter and the descender in the special subframe; obtain the new timeline of this residential quarter; when making the descender of the descending sub frame of new timeline of this residential quarter and special subframe arrive neighbor cell by time delay; not overlapping with the ascender of the sub-frame of uplink of the timeline of this neighbor cell and special subframe; and when making the descender of the descending sub frame of timeline of neighbor cell and special subframe arrive this residential quarter by time delay; not overlapping with the ascender of the sub-frame of uplink of the new timeline of this residential quarter and special subframe; when also making descending control data division in the descending sub frame of timeline of via node arrive this residential quarter by time delay, not overlapping with the ascender of the sub-frame of uplink of the new timeline of this residential quarter and special subframe.
The above-mentioned base station that present embodiment provides is by carrying out the adjustment of timeline to the residential quarter that lays via node, reached and eliminated the purpose of disturbing, need not the timeline of the residential quarter that do not lay via node is adjusted, avoided the timeline of all residential quarters in the network is adjusted, greatly save resource, avoided the wasting of resources, reduced maintenance cost and complexity, simple to operate, realize easily.For the residential quarter that does not lay via node, need not to adjust the timeline of this residential quarter, the timeline of the residential quarter that does not have via node is not affected, thereby these residential quarters do not have the wasting of resources, and whole network operation complexity reduce.Can prevent under the constant prerequisite of the ascender of special subframe and sub-frame of uplink by the length that prolongs GP, prolong the descender of descending sub frame and special subframe and cause the too short situation of GP to take place.The residential quarter makes the control data division of the descending sub frame that via node sends propagate when arriving the base station by postponing the descender of descending sub frame and special subframe, not can with the up receiving unit overlaid of base station, disturb thereby avoid producing.
Referring to Fig. 7, the embodiment of the invention also provides a kind of system of transmitting data, comprising: base station 701 and via node 702;
Via node 702, be used at the TDD network, when the descender of the new timeline of base station 701 propagate reach via node 702 after, with this descender time of advent be reference, the time of appointment in advance is as the position of the descender of the timeline of via node 702, make control data division in the descending sub frame of timeline of via node 702, arrive behind the via node not overlappingly with control data division in the descending sub frame of the new timeline of base station 701, also be used for carrying out transfer of data according to the timeline after the fixed time in advance and base station 701 or UE.
In the present embodiment, above-mentioned transmission comprises reception and sends.
In the present embodiment; particularly; base station 701 is used at the TDD network; for the residential quarter that lays via node 702; initial time line with the TDD network is reference; keep the ascender of the sub-frame of uplink of timeline of this residential quarter and special subframe constant; reconfigure the length of guard time in the special subframe of timeline of this residential quarter; and descending sub frame and the descender in the special subframe with the initial time line of TDD network are reference; postpone the descending sub frame that reconfigures the timeline behind the guard time of this residential quarter and the descender in the special subframe; obtain the new timeline of residential quarter; when making the descender of the descending sub frame of new timeline of this residential quarter and special subframe arrive neighbor cell by time delay; not overlapping with the ascender of the sub-frame of uplink of the timeline of this neighbor cell and special subframe; and when making the descender of the descending sub frame of timeline of neighbor cell and special subframe arrive this residential quarter by time delay; not overlapping with the ascender of the sub-frame of uplink of the new timeline of this residential quarter and special subframe; when also making descending control data division in the descending sub frame of timeline of via node 702 arrive this residential quarter by time delay, not overlapping with the ascender of the sub-frame of uplink of the new timeline of this residential quarter and special subframe.
The said system that present embodiment provides is by carrying out the adjustment of timeline to the residential quarter that lays via node, reached and eliminated the purpose of disturbing, need not the timeline of the residential quarter that do not lay via node is adjusted, avoided the timeline of all residential quarters in the network is adjusted, greatly save resource, avoided the wasting of resources, reduced maintenance cost and complexity, simple to operate, realize easily.For the residential quarter that does not lay via node, need not to adjust the timeline of this residential quarter, the timeline of the residential quarter that does not have via node is not affected, thereby these residential quarters do not have the wasting of resources, and whole network operation complexity reduce.Can prevent under the constant prerequisite of the ascender of special subframe and sub-frame of uplink by the length that prolongs GP, prolong the descender of descending sub frame and special subframe and cause the too short situation of GP to take place.The residential quarter makes the control data division of the descending sub frame that via node sends propagate when arriving the base station by postponing the descender of descending sub frame and special subframe, not can with the up receiving unit overlaid of base station, disturb thereby avoid producing.Via node with descender in advance after, make control data division in the descending sub frame of timeline of via node, not overlapping with the control data division in the descending sub frame of the timeline of base station, avoid producing and disturb.
Need to prove at last, one of ordinary skill in the art will appreciate that all or part of flow process that realizes in above-described embodiment method, be to instruct relevant hardware to finish by computer program, described program can be stored in the computer read/write memory medium, this program can comprise the flow process as the embodiment of above-mentioned each side method when carrying out.Wherein, described storage medium can be magnetic disc, CD, read-only storage memory body (ROM) or stores memory body (RAM) etc. at random.
Each functional unit in the embodiment of the invention can be integrated in the processing module, also can be that the independent physics in each unit exists, and also can be integrated in the module two or more unit.Above-mentioned integrated module both can adopt the form of hardware to realize, also can adopt the form of software function module to realize.If described integrated module realizes with the form of software function module and during as independently production marketing or use, also can be stored in the computer read/write memory medium.The above-mentioned storage medium of mentioning can be read-only memory, disk or CD etc.Above-mentioned each device or system can carry out the method among the correlation method embodiment.
The above only is preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a method of transmitting data is characterized in that, described method comprises:
In the network of time division duplex, for the residential quarter that lays via node, the base station of described residential quarter is reference with the initial time line of described network, keep the ascender of the sub-frame of uplink of timeline of described residential quarter and special subframe constant, reconfigure the length of guard time in the special subframe of timeline of described residential quarter, and descending sub frame and the descender in the special subframe with the initial time line of described network are reference, postpone the descending sub frame that reconfigures the timeline behind the guard time of described residential quarter and the descender in the special subframe, obtain the new timeline of described residential quarter;
Transfer of data is carried out according to described new timeline and subscriber equipment or described via node in described base station;
Wherein, reconfigure the length of guard time in the special subframe of timeline of described residential quarter, comprising:
Keep the length sum of descender in the described special subframe and guard time constant, the length that prolongs described guard time.
2. method according to claim 1 is characterized in that, postpones the descending sub frame that reconfigures the timeline behind the guard time of described residential quarter and the descender in the special subframe, is specially:
Postpone the descending sub frame that reconfigures the timeline behind the guard time of described residential quarter and the descender in the special subframe at least: (Tc+ τ-2*Tp) second;
Wherein, Tc is the length of control data division in the descending sub frame of described via node, and to be described via node be transformed into change-over time of accepting state from the transmission state to τ, and Tp is that the base station of described residential quarter is to the propagation delay of described via node;
When the via node that lays when described residential quarter is a plurality of; according to described (Tc+ τ-2*Tp) be respectively each via node second to calculate a time value; select maximum in all time values that obtain, the descending sub frame and the descender in the special subframe that reconfigure the timeline behind the guard time of described residential quarter postpone described maximum at least.
3. method according to claim 1 is characterized in that, disposes the length of guard time in the special subframe of timeline of described residential quarter, is specially:
The length that disposes guard time in the special subframe of timeline of described residential quarter is at least: (Tc+ τ-2*Tp+L/C) second;
Wherein, Tc is the length of control data division in the descending sub frame of described via node, τ is described via node is transformed into accepting state from the transmission state change-over time, Tp is that the base station of described residential quarter is to the propagation delay of described via node, L is the spacing between the base station of the base station of a residential quarter and another residential quarter, unit is rice, and C is the wireless electromagnetic velocity of wave propagation, and C=3.0*10
8Meter per second;
When the via node that lays when described residential quarter is a plurality of; (be time value of each via node calculating in Tc+ τ-2*Tp+L/C) second according to described; select maximum in all time values that obtain, the length of guard time postpones described maximum at least in the special subframe of the timeline of described residential quarter.
4. according to the described method of arbitrary claim in the claim 1 to 3; it is characterized in that; the base station of described residential quarter is reference with the initial time line of described network; keep the ascender of the sub-frame of uplink of timeline of described residential quarter and special subframe constant; reconfigure the length of guard time in the special subframe of timeline of described residential quarter; and descending sub frame and the descender in the special subframe with the initial time line of described network are reference; postpone the descending sub frame that reconfigures the timeline behind the guard time of described residential quarter and the descender in the special subframe; obtain the new timeline of described residential quarter, be specially:
The base station of described residential quarter is reference with the initial time line of described network; keep the ascender of the sub-frame of uplink of timeline of described residential quarter and special subframe constant; reconfigure the length of guard time in the special subframe of timeline of described residential quarter; and descending sub frame and the descender in the special subframe with the initial time line of described network are reference; postpone the descending sub frame that reconfigures the timeline behind the guard time of described residential quarter and the descender in the special subframe; obtain the new timeline of described residential quarter; when making the descender of the descending sub frame of new timeline of described residential quarter and special subframe arrive neighbor cell by time delay; not overlapping with the ascender of the sub-frame of uplink of the timeline of this neighbor cell and special subframe; and when making the descender of the descending sub frame of timeline of neighbor cell and special subframe arrive described residential quarter by time delay; not overlapping with the ascender of the sub-frame of uplink of the new timeline of described residential quarter and special subframe; when also making descending control data division in the descending sub frame of timeline of described via node arrive described residential quarter by time delay, not overlapping with the ascender of the sub-frame of uplink of the new timeline of described residential quarter and special subframe.
5. a base station is characterized in that, is arranged in the network of time division duplex, and cloth is placed with via node in the residential quarter of described base station service, and described base station comprises:
Processing module, the initial time line that is used for described network is reference, keep the ascender of the sub-frame of uplink of timeline of described residential quarter and special subframe constant, reconfigure the length of guard time in the special subframe of timeline of described residential quarter, and descending sub frame and the descender in the special subframe with the initial time line of described network are reference, postpone the descending sub frame that reconfigures the timeline behind the guard time of described residential quarter and the descender in the special subframe, obtain the new timeline of described residential quarter;
Sending module is used for carrying out transfer of data according to described new timeline and subscriber equipment or described via node;
Wherein, described processing module reconfigures the length of guard time in the special subframe of timeline of described residential quarter, comprising:
Keep the length sum of descender in the described special subframe and guard time constant, the length that prolongs described guard time.
6. base station according to claim 5 is characterized in that, described processing module is used for:
The descending sub frame that reconfigures the timeline behind the guard time of described residential quarter and the descender in the special subframe are postponed to be (Tc+ τ-2*Tp) second at least, when the via node that lays when described residential quarter is a plurality of, according to (Tc+ τ-2*Tp) be that each via node calculates a time value second, in all time values that obtain, select maximum, the descending sub frame and the descender in the special subframe that reconfigure the timeline behind the guard time of described residential quarter postponed described maximum at least;
And/or,
The length that disposes guard time in the special subframe of timeline of described residential quarter is at least: (Tc+ τ-2*Tp+L/C) second, when the via node that lays when described residential quarter is a plurality of, according to (Tc+ τ-2*Tp+L/C) be that each via node calculates a time value second, in all time values that obtain, select maximum, the length of guard time in the special subframe of the timeline of described residential quarter is postponed described maximum at least;
Wherein, Tc is the length of control data division in the descending sub frame of described via node, τ is described via node is transformed into accepting state from the transmission state change-over time, Tp is that the base station of described residential quarter is to the propagation delay of described via node, L is the spacing between the base station of the base station of a residential quarter and another residential quarter, unit is rice, and C is the wireless electromagnetic velocity of wave propagation, and C=3.0*10
8Meter per second.
7. base station according to claim 5; it is characterized in that; the initial time line that described processing module specifically is used for described network is reference; keep the ascender of the sub-frame of uplink of timeline of described residential quarter and special subframe constant; reconfigure the length of guard time in the special subframe of timeline of described residential quarter; and descending sub frame and the descender in the special subframe with the initial time line of described network are reference; postpone the descending sub frame that reconfigures the timeline behind the guard time of described residential quarter and the descender in the special subframe; obtain the new timeline of described residential quarter; when making the descender of the descending sub frame of new timeline of described residential quarter and special subframe arrive neighbor cell by time delay; not overlapping with the ascender of the sub-frame of uplink of the timeline of this neighbor cell and special subframe; and when making the descender of the descending sub frame of timeline of neighbor cell and special subframe arrive described residential quarter by time delay; not overlapping with the ascender of the sub-frame of uplink of the new timeline of described residential quarter and special subframe; when also making descending control data division in the descending sub frame of timeline of described via node arrive described residential quarter by time delay, not overlapping with the ascender of the sub-frame of uplink of the new timeline of described residential quarter and special subframe.
8. a system of transmitting data is characterized in that, described system is arranged in the network of time division duplex, comprising: base station and via node, and laid described via node in the residential quarter of described base station service;
Described base station, the initial time line that is used for described network is reference, keep the ascender of the sub-frame of uplink of timeline of described residential quarter and special subframe constant, reconfigure the length of guard time in the special subframe of timeline of described residential quarter, and descending sub frame and the descender in the special subframe with the initial time line of described network are reference, postpone the descending sub frame that reconfigures the timeline behind the guard time of described residential quarter and the descender in the special subframe, obtain the new timeline of described residential quarter; Also be used for carrying out transfer of data according to described new timeline and subscriber equipment or described via node;
Described via node, be used for after the descender of the new timeline of described base station is propagated the described via node of arrival, with described descender time of advent be reference, the time of appointment in advance is as the position of the descender of the timeline of described via node, it is not overlapping to make that control data division in the descending sub frame of new timeline of control data division in the descending sub frame of timeline of described via node and described base station arrives behind the described via node, also is used for carrying out transfer of data according to the timeline after the fixed time in advance and described base station or subscriber equipment;
Wherein, described base station reconfigures the length of guard time in the special subframe of timeline of described residential quarter, comprising:
Keep the length sum of descender in the described special subframe and guard time constant, the length that prolongs described guard time.
Priority Applications (2)
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| CN 201010105145 CN102137500B (en) | 2010-01-26 | 2010-01-26 | Method, base station and system for data transmission |
| PCT/CN2011/070626 WO2011091748A1 (en) | 2010-01-26 | 2011-01-26 | Method, enhanced node base and system for transmitting data |
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| CN 201010105145 CN102137500B (en) | 2010-01-26 | 2010-01-26 | Method, base station and system for data transmission |
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| CN102811191B (en) | 2011-05-31 | 2016-06-08 | 华为技术有限公司 | A kind of data transmission method and device |
| CN105246159B (en) | 2011-05-31 | 2019-01-08 | 华为技术有限公司 | A kind of communication system |
| CN107529228B (en) * | 2012-02-29 | 2021-12-03 | 三星电子株式会社 | Method and apparatus for transceiving channels associated with a terminal supporting half-duplex transmission |
| WO2014082199A1 (en) * | 2012-11-27 | 2014-06-05 | Telefonaktiebolaget L M Ericsson (Publ) | Base station, user equipment and method for tcp transmission with dynamic tdd reconfiguration |
| CN107431610A (en) | 2013-12-25 | 2017-12-01 | 华为技术有限公司 | Communication means, base station and the terminal of half-duplex frequency division duplex |
| WO2016119266A1 (en) * | 2015-01-31 | 2016-08-04 | 华为技术有限公司 | Subframe sending and receiving methods, base station, and user equipment |
| US10342026B2 (en) | 2015-04-17 | 2019-07-02 | Panasonic Intellectual Property Corporation Of America | Rate matching for a machine type communication channel in time division duplex |
| CN108243432B (en) * | 2018-01-09 | 2021-05-11 | 重庆邮电大学 | Prototype design method for wireless access and return integrated small base station |
| US10863524B2 (en) * | 2018-04-04 | 2020-12-08 | Qualcomm Incorporated | Multiplexing rules for mixed communication protocols |
| CN111432464B (en) * | 2019-01-09 | 2023-04-07 | 成都鼎桥通信技术有限公司 | Communication method, device, system and storage medium |
| WO2021168751A1 (en) * | 2020-02-27 | 2021-09-02 | Qualcomm Incorporated | Techniques for coexistence of wireless communication devices that use the same frequency resources |
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