CN103826267A - Lte network relay station time sequence switching method and relay station - Google Patents
Lte network relay station time sequence switching method and relay station Download PDFInfo
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- CN103826267A CN103826267A CN201210464827.9A CN201210464827A CN103826267A CN 103826267 A CN103826267 A CN 103826267A CN 201210464827 A CN201210464827 A CN 201210464827A CN 103826267 A CN103826267 A CN 103826267A
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Abstract
The invention discloses an LTE network relay station time sequence switching method which comprises the following steps: a relay station determines an access air interface uplink switching sub frame number and a return air interface uplink sending sub frame number according to a preset working mode and a preset frame ratio; the relay station sets the starting time of uplink time sequence switching from an access air interface to a return air interface and the sending time at which return air interface uplink data is sent to a donor evolved node B according to the access air interface uplink switching sub frame number, the switching air interface time delay calculated by the donor evolved node B, and the sending gap between the access air interface uplink switching sub frame number and the return air interface uplink sending sub frame number; and the relay station sends return air interface uplink data to the donor evolved node B according to the sending time and completes time sequence switching between an access uplink and a return uplink. The invention further discloses a relay station. By adopting the scheme disclosed by the invention, the problem of time sequence switching of the relay station between the access uplink and the return uplink can be solved to enable a system to work normally, and data transmission pressure is not caused.
Description
Technical field
The present invention relates to communication technical field, specially refer to method and relay station that a kind of LTE network trunk station sequential is switched.
Background technology
LTE-A(LTE-Advanced) be the smooth evolution on LTE basis, can support multiple covering scene, seamless coverage from macrocellular to indoor scene is provided, and its emphasis solves the high speed data transfer in low speed mobile environment, further reduces technical costs and energy consumption etc. simultaneously.Introduce RN(Relay Node, relay station) can make LTE-A network better meet demand, capacity is promoted, in low speed mobile environment time, transmission speed also can reach 1Gbps, thereby improves spreadability, and can carry out blind spot covering.Therefore the object of introducing RN is effectively to improve the quality of reception of Cell Edge User, improves covering power.In RN, adopt some enhancing technology of eating dishes without rice or wine can make throughput improve, but the handling capacity of whole back haul link is but the bottleneck that whole system capability improves.
With reference to Fig. 1, in network, introduce RN, make originally to only have the system of 2 links to increase by 4 links.Access Uu eat dishes without rice or wine link: RN and UE(User Equipment, terminal) between link, comprise uplink and downlink access link.The backhaul Un link of eating dishes without rice or wine: DeNB(Donor evolved Node B, host base station) and RN between wireless link, comprise uplink and downlink back haul link.
For TDD(Time Division Duplex in band, time division multiplexing) and FDD(Frequency Division Duplex, frequency division multiplexing) two kinds of repeater modes, because up link and down link have all adopted time division multiplexing mode, Uu link and the Un link of eating dishes without rice or wine of eating dishes without rice or wine need to carry out sequential switching controls in the time of time-sharing work like this.In LTE-A Relase10 agreement, sequential for RN between access downlink and backhaul down link is switched, had clear and definite regulation, the time slot that takies two symbols in back haul link Un eats dishes without rice or wine descending sub frame completes receives the switching of sending out and being dealt into receipts.But the sequential for RN between access up link and backhaul uplink is switched the solution still not stipulating, thereby causes DeNB to receive abnormal upstream data, and system cannot normally be worked; And, because the access Un ascending resource of eating dishes without rice or wine is less, easily cause transfer of data pressure.
Summary of the invention
Method and the relay station of main purpose of the present invention for providing a kind of LTE network trunk station sequential to switch, be intended to solve the sequential switching problem of relay station between access up link and backhaul uplink, system is normally worked, and can not cause transfer of data pressure.
The invention provides the method that a kind of LTE network trunk station sequential is switched, comprising:
Relay station is according to default mode of operation and frame proportioning, determines access up switching subframe numbers and the backhaul up transmission subframe numbers of eating dishes without rice or wine of eating dishes without rice or wine;
According to described access switching that up switching subframe numbers, host base station the calculate time delay of eating dishes without rice or wine of eating dishes without rice or wine, and the access transmission gap that up switching subframe numbers and backhaul eat dishes without rice or wine between up transmission subframe numbers of eating dishes without rice or wine, set described access the eat dishes without rice or wine initial time that up sequential switches and to the eat dishes without rice or wine delivery time of upstream data of host base station transmission backhaul of described backhaul of eating dishes without rice or wine;
Send the backhaul upstream data of eating dishes without rice or wine to host base station according to described delivery time, the sequential completing between access up link and backhaul uplink is switched.
Preferably, carrying out describedly according to the frame proportioning of the mode of operation of relay station and relay station, determining that eat dishes without rice or wine up switching subframe numbers and backhaul of access eat dishes without rice or wine before up transmission subframe numbers, also to comprise:
According to the system configuration of LTE network, set mode of operation.
Preferably, described mode of operation is time division multiplexing and frequency division multiplexing pattern.
Preferably, carrying out described setting access the eat dishes without rice or wine initial time that up sequential switches and send backhaul to host base station and eat dishes without rice or wine before the delivery time of upstream data, also to comprise of described backhaul of eating dishes without rice or wine:
Receive the time delay of eating dishes without rice or wine that the host base station in LTE network sends, described in the time delay of eating dishes without rice or wine be that the Physical Random Access Channel module of described host base station obtains by calculating;
Setting the described switching time delay of eating dishes without rice or wine is 1/2nd time delay values of eating dishes without rice or wine.
Preferably, described according to access switching that up switching subframe numbers, host base station the calculate time delay of eating dishes without rice or wine of eating dishes without rice or wine, and the access transmission gap that up switching subframe numbers and backhaul eat dishes without rice or wine between up transmission subframe numbers of eating dishes without rice or wine, set described access the eat dishes without rice or wine initial time that up sequential switches and comprising to the eat dishes without rice or wine delivery time of upstream data of host base station transmission backhaul of described backhaul of eating dishes without rice or wine:
Determining the eat dishes without rice or wine original position of symbol of up switching subframe numbers of described access, is the described access described backhaul initial time that up sequential switches of eating dishes without rice or wine of eating dishes without rice or wine by described start position setting;
Described switching the eat dishes without rice or wine transmission gap sum that up switching subframe numbers and backhaul eat dishes without rice or wine between up transmission subframe numbers of time delay and access of eating dishes without rice or wine is set as sending to host base station the eat dishes without rice or wine delivery time of upstream data of backhaul.
The present invention also provides a kind of relay station, comprising:
Determination module, for according to default mode of operation and frame proportioning, determines access up switching subframe numbers and the backhaul up transmission subframe numbers of eating dishes without rice or wine of eating dishes without rice or wine;
The first setting module, the switching calculating for eat dishes without rice or wine according to described access up switching subframe numbers, the host base station time delay of eating dishes without rice or wine, and the access transmission gap that up switching subframe numbers and backhaul eat dishes without rice or wine between up transmission subframe numbers of eating dishes without rice or wine, set described access the eat dishes without rice or wine initial time that up sequential switches and to the eat dishes without rice or wine delivery time of upstream data of host base station transmission backhaul of described backhaul of eating dishes without rice or wine;
Handover module, for send the backhaul upstream data of eating dishes without rice or wine to host base station according to described delivery time, the sequential completing between access up link and backhaul uplink is switched.
Preferably, relay station also comprises:
The second setting module, for according to the system configuration of LTE network, sets mode of operation.
Preferably, described mode of operation is time division multiplexing and frequency division multiplexing pattern.
Preferably, relay station also comprises:
Receiver module, the time delay of eating dishes without rice or wine sending for receiving the host base station of LTE network, described in the time delay of eating dishes without rice or wine be that the Physical Random Access Channel module of described host base station obtains by calculating;
The 3rd setting module is 1/2nd time delay values of eating dishes without rice or wine for setting the described switching time delay of eating dishes without rice or wine.
Preferably, described the first setting module comprises:
Determining unit, for determining the eat dishes without rice or wine original position of symbol of up switching subframe numbers of described access;
The first setup unit, for by described start position setting being the described access described backhaul initial time that up sequential switches of eating dishes without rice or wine of eating dishes without rice or wine;
The second setup unit, is set as sending to host base station the eat dishes without rice or wine delivery time of upstream data of backhaul for eat dishes without rice or wine transmission gap sum that up switching subframe numbers and backhaul eat dishes without rice or wine between up transmission subframe numbers of described switching is eated dishes without rice or wine time delay and access.
The present invention is by determining the access of relay station up switching subframe numbers and the backhaul up transmission subframe numbers of eating dishes without rice or wine of eating dishes without rice or wine; According to the access up switching subframe numbers of eating dishes without rice or wine, set the access backhaul initial time that up sequential switches of eating dishes without rice or wine of eating dishes without rice or wine; And the switching calculating according to the host base station time delay of eating dishes without rice or wine, and the access transmission gap that up switching subframe numbers and backhaul eat dishes without rice or wine between up transmission subframe numbers of eating dishes without rice or wine, set relay station to the eat dishes without rice or wine delivery time of upstream data of host base station transmission backhaul.And relay station sends the backhaul upstream data of eating dishes without rice or wine to host base station according to this delivery time, thereby the sequential completing between access up link and backhaul uplink is switched.Adopt in this way, can solve the sequential switching problem of relay station between access up link and backhaul uplink, system is normally worked, and can not cause transfer of data pressure.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet that the present invention is based on method one embodiment of LTE network settings relay station switching sequence;
Fig. 2 is the schematic flow sheet of the another embodiment of method of LTE network trunk of the present invention station sequential switching;
Fig. 3 is the schematic flow sheet of another embodiment of method of LTE network trunk of the present invention station sequential switching;
Fig. 4 is the schematic flow sheet of setting initial time and delivery time in the method switched of LTE network trunk of the present invention station sequential;
Fig. 5 a to Fig. 5 c is the switching schematic diagram of three kinds of execution modes of the method for LTE network trunk of the present invention station sequential switching;
Fig. 6 is the structural representation of relay station one embodiment of the present invention;
Fig. 7 is the structural representation of the another embodiment of relay station of the present invention;
Fig. 8 is the structural representation of another embodiment of relay station of the present invention;
Fig. 9 is the structural representation of the first setting module in the relay station shown in Fig. 6.
Realization, functional characteristics and the advantage of the object of the invention, in connection with embodiment, are described further with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
The invention provides the method that a kind of LTE network trunk station sequential is switched.
With reference to Fig. 1, Fig. 1 is that Fig. 1 is the schematic flow sheet of method one embodiment of LTE network trunk of the present invention station sequential switching.
The method that the LTE network trunk station sequential that the present embodiment provides is switched, comprising:
Step S10, relay station is according to default mode of operation and frame proportioning, determines access up switching subframe numbers and the backhaul up transmission subframe numbers of eating dishes without rice or wine of eating dishes without rice or wine;
In the present embodiment, the mode of operation of default relay station in the time that the system of being provided with powers on, and after the frame proportioning of this relay station, this frame proportioning is the proportioning of sub-frame of uplink and the descending sub frame of relay station; This relay station is according to mode of operation and frame proportioning, further determine access up switching subframe numbers and the backhaul up transmission subframe numbers of eating dishes without rice or wine of eating dishes without rice or wine, in the present embodiment, the access up switching subframe numbers of eating dishes without rice or wine can be denoted as K, and the backhaul up transmission subframe numbers of eating dishes without rice or wine is denoted as L; And the span of K and L all can be set between 0 ~ 9.
In the present embodiment, eat dishes without rice or wine up switching subframe numbers K and backhaul while eating dishes without rice or wine up transmission subframe numbers L determining access, according to the difference of the mode of operation of relay station, the factor that determines to eat dishes without rice or wine access the value model of up switching subframe numbers K turns is also different, but, for different mode of operations, access eat dishes without rice or wine up switching subframe numbers K need be in advance at least one backhaul up transmission subframe numbers L that eats dishes without rice or wine.
Step S20, according to access switching that up switching subframe numbers, host base station the calculate time delay of eating dishes without rice or wine of eating dishes without rice or wine, and the access transmission gap that up switching subframe numbers and backhaul eat dishes without rice or wine between up transmission subframe numbers of eating dishes without rice or wine, set access the eat dishes without rice or wine initial time that up sequential switches and to the eat dishes without rice or wine delivery time of upstream data of host base station transmission backhaul of backhaul of eating dishes without rice or wine;
Eat dishes without rice or wine after the value of up transmission subframe numbers L in eat dishes without rice or wine up switching subframe numbers K and backhaul of the access of having determined relay station, according to the access up switching subframe numbers K that eats dishes without rice or wine, set the access backhaul initial time that up sequential switches of eating dishes without rice or wine of eating dishes without rice or wine; And, after having set initial time, the switching further calculating according to the host base station time delay of eating dishes without rice or wine, and the access transmission gap that up switching subframe numbers and backhaul eat dishes without rice or wine between up transmission subframe numbers of eating dishes without rice or wine, set to the eat dishes without rice or wine delivery time of upstream data of host base station transmission backhaul.
Step S30, sends the backhaul upstream data of eating dishes without rice or wine to host base station according to delivery time, the sequential completing between access up link and backhaul uplink is switched.
When having set respectively access the eat dishes without rice or wine initial time that up sequential switches and send backhaul to host base station and eat dishes without rice or wine after the delivery time of upstream data of backhaul of eating dishes without rice or wine, relay station sends the backhaul upstream data of eating dishes without rice or wine to host base station according to the delivery time that sets, so far, completed the process that the sequential between access up link and backhaul uplink is switched.
The embodiment of the present invention, by determining the access of relay station up switching subframe numbers and the backhaul up transmission subframe numbers of eating dishes without rice or wine of eating dishes without rice or wine; According to the access up switching subframe numbers of eating dishes without rice or wine, set the access backhaul initial time that up sequential switches of eating dishes without rice or wine of eating dishes without rice or wine; And the switching calculating according to the host base station time delay of eating dishes without rice or wine, and the access transmission gap that up switching subframe numbers and backhaul eat dishes without rice or wine between up transmission subframe numbers of eating dishes without rice or wine, set relay station to the eat dishes without rice or wine delivery time of upstream data of host base station transmission backhaul.And relay station sends the backhaul upstream data of eating dishes without rice or wine to host base station according to this delivery time, thereby the sequential completing between access up link and backhaul uplink is switched.Adopt in this way, can solve the sequential switching problem of relay station between access up link and backhaul uplink, system is normally worked, and can not cause transfer of data pressure.
With reference to Fig. 2, Fig. 2 is the schematic flow sheet of the another embodiment of method of LTE network trunk of the present invention station sequential switching.
On the basis of above-described embodiment, before execution step S10, the method that LTE network trunk station sequential is switched also comprises:
Step S40, according to the system configuration of LTE network, sets mode of operation.
In the present embodiment, determining that eat dishes without rice or wine up switching subframe numbers and backhaul of the access of relay station eat dishes without rice or wine before up transmission subframe numbers, according to the system configuration of LTE network, in the time that system powers on, the mode of operation of relay station to be arranged.In the present embodiment, the mode of operation of indication relay station comprises two kinds of time division multiplexing TDD and frequency division multiplexing model F DD.
Eat dishes without rice or wine before up transmission subframe numbers in eat dishes without rice or wine up switching subframe numbers and backhaul of the access of determining relay station, mode of operation to relay station arranges, further set access the eat dishes without rice or wine initial time that up sequential switches and send the eat dishes without rice or wine delivery time of upstream data of backhaul to host base station of backhaul of eating dishes without rice or wine for relay station, provide a great convenience.
With reference to Fig. 3, Fig. 3 is the schematic flow sheet of another embodiment of method of LTE network trunk of the present invention station sequential switching.
On the basis of method one embodiment switching in LTE network trunk of the present invention station sequential, before execution step S20, also comprise:
Step S50, receives the time delay of eating dishes without rice or wine that the host base station in LTE network sends, and the time delay of eating dishes without rice or wine is that the Physical Random Access Channel module of host base station obtains by calculating;
Step S51, sets that to switch the time delay of eating dishes without rice or wine be 1/2nd time delay values of eating dishes without rice or wine.
In the present embodiment, in the switching calculating according to the host base station time delay of eating dishes without rice or wine, and the access transmission gap that up switching subframe numbers and backhaul eat dishes without rice or wine between up transmission subframe numbers of eating dishes without rice or wine, setting relay station sends backhaul and eats dishes without rice or wine before the delivery time of upstream data, first to receive the time delay N that eats dishes without rice or wine between relay station and the host base station of transmitting the host base station in LTE network to host base station
tA, this time delay N that eats dishes without rice or wine
tAfor the Physical Random Access Channel module by host base station obtains by calculating, when host base station calculates the time delay N that eats dishes without rice or wine
tAvalue after, this value can be sent to relay station by eating dishes without rice or wine.
Receive at relay station the time delay N that eats dishes without rice or wine that host base station sends
tAafter, can be further according to this time delay N that eats dishes without rice or wine
tA, set the value of switching the time delay of eating dishes without rice or wine.In the present embodiment, can get 1/2nd and eat dishes without rice or wine time delay value as the eat dishes without rice or wine value of time delay of switching, switching the time delay of eating dishes without rice or wine is N
tA/ 2.
Send backhaul to host base station and eat dishes without rice or wine before the delivery time of upstream data, to receive the time delay of eating dishes without rice or wine between relay station and the host base station of transmitting host base station setting relay station, and according to this time delay N that eats dishes without rice or wine
tAfurther set and switch the value of time delay of eating dishes without rice or wine, send the backhaul setting of delivery time of upstream data of eating dishes without rice or wine to host base station to complete relay station, thereby further guarantee to provide a great convenience for the setting of delivery time.
With reference to Fig. 4, Fig. 4 is the schematic flow sheet of setting initial time and delivery time in the method switched of LTE network trunk of the present invention station sequential.
On the basis of method one embodiment switching in LTE network trunk of the present invention station sequential, step S20 comprises:
Step S21, determines the eat dishes without rice or wine original position of symbol of up switching subframe numbers of access, is the access backhaul initial time that up sequential switches of eating dishes without rice or wine of eating dishes without rice or wine by start position setting;
In the present embodiment, determine that at relay station eat dishes without rice or wine up switching subframe numbers K and backhaul of access eat dishes without rice or wine after the value of up transmission subframe numbers L, first determine the original position of the symbol that accesses the up switching subframe numbers K that eats dishes without rice or wine, then the access backhaul initial time that up sequential switches of eating dishes without rice or wine of eating dishes without rice or wine according to this start position setting, in the present embodiment, the symbol of this K can be designated as M, is the access backhaul initial time that up sequential switches of eating dishes without rice or wine of eating dishes without rice or wine by the start position setting of M.
Access the symbol M of the up switching subframe numbers K that eats dishes without rice or wine, its value is the symbol numbers comprising in a subframe, and in the present embodiment, the span that is set as this M is between 0 ~ 13.And in the time of M>1, the value of M is not subject to the restriction of its original position, can get any time in 0 ~ 12 as the access backhaul initial time that up sequential switches of eating dishes without rice or wine of eating dishes without rice or wine.
Step S22, is set as sending to host base station the eat dishes without rice or wine delivery time of upstream data of backhaul by switching the eat dishes without rice or wine transmission gap sum that up switching subframe numbers and backhaul eat dishes without rice or wine between up transmission subframe numbers of time delay and access of eating dishes without rice or wine.
Eat dishes without rice or wine after initial time that up sequential switches having set the access backhaul of eating dishes without rice or wine, the switching calculating according to the host base station time delay of eating dishes without rice or wine, and the access transmission gap that up switching subframe numbers and backhaul eat dishes without rice or wine between up transmission subframe numbers of eating dishes without rice or wine, set relay station to the eat dishes without rice or wine delivery time of upstream data of host base station transmission backhaul.Eat dishes without rice or wine transmission gap that up switching subframe numbers and backhaul eat dishes without rice or wine between up transmission subframe numbers of access is desired in the agreement of LTE network, can be designated as N
tA offset, the N of defined in agreement
tA offsetvalue be 624T
s.In the present embodiment, delivery time can be set as switching eat dishes without rice or wine time delay and the transmission gap sum that accesses eat dishes without rice or wine up switching subframe numbers and backhaul and eat dishes without rice or wine between up transmission subframe numbers, is N
tA/ 2+N
tA offset.
Be the access backhaul initial time that up sequential switches of eating dishes without rice or wine of eating dishes without rice or wine by the eat dishes without rice or wine start position setting of symbol of up switching subframe numbers of access; And switching the eat dishes without rice or wine transmission gap sum that up switching subframe numbers and backhaul eat dishes without rice or wine between up transmission subframe numbers of time delay and access of eating dishes without rice or wine is set as sending to host base station the eat dishes without rice or wine delivery time of upstream data of backhaul.Make relay station can send by delivery time the backhaul upstream data of eating dishes without rice or wine to host base station, thereby further guarantee to solve the sequential switching problem of relay station between access up link and backhaul uplink, system is normally worked, and can not cause transfer of data pressure.
The various embodiments described above of method of switching based on LTE network trunk of the present invention station sequential, below with three kinds of execution modes, the method that LTE network trunk station sequential is switched is elaborated:
With reference to Fig. 5 a, Fig. 5 a is the switching schematic diagram of the execution mode one of the method for LTE network trunk of the present invention station sequential switching.
Execution mode one:
When the mode of operation of the relay station in LTE network system is tdd mode, the backhaul only sub-frame of uplink of eating dishes without rice or wine, the up switching subframe that access is eated dishes without rice or wine is conventional sub-frame of uplink.
Step 1: according to LTE grid layout, in configuration band, the mode of operation of relay station is TDD in the time that system powers on;
Step 2: determine that according to the frame proportioning of relay station under tdd mode the eat dishes without rice or wine value of up switching subframe numbers K of access is K=6 or 7, and the eat dishes without rice or wine value of up transmission subframe numbers L of backhaul is L=8;
Step 3: the eat dishes without rice or wine original position of symbol M of up switching subframe numbers K=6 or K=7 of access is set to the access backhaul initial time that up sequential switches of eating dishes without rice or wine of eating dishes without rice or wine, here get optimal value K=7, the switching instant of M=13 is the access backhaul initial time that up sequential switches of eating dishes without rice or wine of eating dishes without rice or wine, and this initial time can be designated as and go out as shown in FIG. 1.;
Step 4: determine the time delay N that eats dishes without rice or wine between relay station and host base station
tA, this time delay N that eats dishes without rice or wine
tAvalue is calculated by the Physical Random Access Channel module of host base station, and passes to relay station by eating dishes without rice or wine, and relay station is only got this time delay N that eats dishes without rice or wine
tA/ 2nd of a value, and according to the access of the LTE agreement defined transmission gap N that up switching subframe numbers and backhaul eat dishes without rice or wine between up transmission subframe numbers that eats dishes without rice or wine
tA offset, setting relay station, send the eat dishes without rice or wine delivery time of upstream data of backhaul to host base station be N
tA/ 2+N
tA offset, this delivery time can be designated as and go out as shown in FIG. 2.;
Step 5: relay station is shifting to an earlier date in N
tA/ 2+N
tA offsetthe delivery time of DeNB, sends backhaul and eats dishes without rice or wine upstream data to host base station, and the sequential so far completing between access up link and backhaul uplink is switched.For the transfer of data that guarantees to eat dishes without rice or wine is correct and stable, can suppose relay stand on symbol M=13 of access ascending idle port subframe numbers K=7 and do not dispatch any information.
With reference to Fig. 5 b, Fig. 5 b is the switching schematic diagram of the execution mode two of the method for LTE network trunk of the present invention station sequential switching.
Execution mode two:
When the mode of operation of the relay station in LTE network system is tdd mode, the backhaul only sub-frame of uplink of eating dishes without rice or wine, the up switching subframe that access is eated dishes without rice or wine is special sub-frame of uplink.
Step 1: according to LTE grid layout, in configuration band, the mode of operation of relay station is TDD in the time that system powers on;
Step 2: determine that according to the frame proportioning of relay station under tdd mode the eat dishes without rice or wine value of up switching subframe numbers K of access is K=1, and the eat dishes without rice or wine value of up transmission subframe numbers L of backhaul is L=2;
Step 3: the eat dishes without rice or wine original position of symbol M of up switching subframe numbers K=1 of access is set to the access backhaul initial time that up sequential switches of eating dishes without rice or wine of eating dishes without rice or wine, here get optimal value K=1, the switching instant of M=13 is the access backhaul initial time that up sequential switches of eating dishes without rice or wine of eating dishes without rice or wine, and this initial time can be designated as and go out as shown in FIG. 1.;
Step 4: determine the time delay N that eats dishes without rice or wine between relay station and host base station
tA, this time delay N that eats dishes without rice or wine
tAvalue is calculated by the Physical Random Access Channel module of host base station, and passes to relay station by eating dishes without rice or wine, and relay station is only got this time delay N that eats dishes without rice or wine
tA/ 2nd of a value, and according to the access of the LTE agreement defined transmission gap N that up switching subframe numbers and backhaul eat dishes without rice or wine between up transmission subframe numbers that eats dishes without rice or wine
tA offset, setting relay station, send the eat dishes without rice or wine delivery time of upstream data of backhaul to host base station be N
tA/ 2+N
tA offset, this delivery time can be designated as and go out as shown in FIG. 2.;
Step 5: relay station is shifting to an earlier date in N
tA/ 2+N
tA offsetthe delivery time of DeNB, sends backhaul and eats dishes without rice or wine upstream data to host base station, and the sequential so far completing between access up link and backhaul uplink is switched.For the transfer of data that guarantees to eat dishes without rice or wine is correct and stable, can suppose relay stand on symbol M=13 of access ascending idle port subframe numbers K=1 and do not dispatch any information.
With reference to Fig. 5 c, Fig. 5 c is the switching schematic diagram of the execution mode three of the method for LTE network trunk of the present invention station sequential switching.
Execution mode three:
When the mode of operation of the relay station in LTE network system is fdd mode, backhaul two sub-frame of uplink of eating dishes without rice or wine, the up switching subframe that access is eated dishes without rice or wine is conventional sub-frame of uplink.
Step 1: according to LTE grid layout, in configuration band, the mode of operation of relay station is FDD in the time that system powers on;
Step 2: determine that according to the frame proportioning of relay station under tdd mode the eat dishes without rice or wine value of up switching subframe numbers K of access is K=0 or 1, and the eat dishes without rice or wine value of up transmission subframe numbers L of backhaul is L=2 and 3;
Step 3: the eat dishes without rice or wine original position of symbol M of up switching subframe numbers K=1 of access is set to the access backhaul initial time that up sequential switches of eating dishes without rice or wine of eating dishes without rice or wine, here get optimal value K=1, the switching instant of M=13 is the access backhaul initial time that up sequential switches of eating dishes without rice or wine of eating dishes without rice or wine, and this initial time can be designated as and go out as shown in FIG. 1.;
Step 4: determine the time delay N that eats dishes without rice or wine between relay station and host base station
tA, this time delay N that eats dishes without rice or wine
tAvalue is calculated by the Physical Random Access Channel module of host base station, and passes to relay station by eating dishes without rice or wine, and relay station is only got this time delay N that eats dishes without rice or wine
tA/ 2nd of a value, and according to the access of the LTE agreement defined transmission gap N that up switching subframe numbers and backhaul eat dishes without rice or wine between up transmission subframe numbers that eats dishes without rice or wine
tA offset, setting relay station, send the eat dishes without rice or wine delivery time of upstream data of backhaul to host base station be N
tA/ 2+N
tA offset, this delivery time can be designated as and go out as shown in FIG. 2.;
Step 5: relay station is shifting to an earlier date in N
tA/ 2+N
tA offsetthe delivery time of DeNB, sends backhaul and eats dishes without rice or wine upstream data to host base station, and the sequential so far completing between access up link and backhaul uplink is switched.For the transfer of data that guarantees to eat dishes without rice or wine is correct and stable, can suppose relay stand on symbol M=13 of access ascending idle port subframe numbers K=1 and do not dispatch any information.
The present invention also provides a kind of relay station.
With reference to Fig. 6, Fig. 6 is the structural representation of relay station one embodiment of the present invention.
The relay station that the present embodiment provides, comprising:
The first setting module 20, the switching calculating for eat dishes without rice or wine according to access up switching subframe numbers, the host base station time delay of eating dishes without rice or wine, and the access transmission gap that up switching subframe numbers and backhaul eat dishes without rice or wine between up transmission subframe numbers of eating dishes without rice or wine, set access the eat dishes without rice or wine initial time that up sequential switches and to the eat dishes without rice or wine delivery time of upstream data of host base station transmission backhaul of backhaul of eating dishes without rice or wine;
In the present embodiment, the mode of operation of default relay station in the time that the system of being provided with powers on, and after the frame proportioning of this relay station, this frame proportioning is the proportioning of sub-frame of uplink and the descending sub frame of relay station; Relay station passes through determination module 10 according to mode of operation and frame proportioning, further determine access up switching subframe numbers and the backhaul up transmission subframe numbers of eating dishes without rice or wine of eating dishes without rice or wine, in the present embodiment, the access up switching subframe numbers of eating dishes without rice or wine can be denoted as K, and the backhaul up transmission subframe numbers of eating dishes without rice or wine is denoted as L; And the span of K and L all can be set between 0 ~ 9.
In the present embodiment, eat dishes without rice or wine up switching subframe numbers K and backhaul while eating dishes without rice or wine up transmission subframe numbers L determining access, according to the difference of the mode of operation of relay station, the factor that determines to eat dishes without rice or wine access the value model of up switching subframe numbers K turns is also different, but, for different mode of operations, access eat dishes without rice or wine up switching subframe numbers K need be in advance at least one backhaul up transmission subframe numbers L that eats dishes without rice or wine.
Eat dishes without rice or wine after the value of up transmission subframe numbers L in eat dishes without rice or wine up switching subframe numbers K and backhaul of the access of having determined relay station, the first setting module 20 is according to the access up switching subframe numbers K that eats dishes without rice or wine, and sets the access backhaul initial time that up sequential switches of eating dishes without rice or wine of eating dishes without rice or wine; And, after having set initial time, the switching that the first setting module 20 further calculates according to the host base station time delay of eating dishes without rice or wine, and the access transmission gap that up switching subframe numbers and backhaul eat dishes without rice or wine between up transmission subframe numbers of eating dishes without rice or wine, default switching eat dishes without rice or wine time delay and the delay skew amount of eating dishes without rice or wine, set and send the eat dishes without rice or wine delivery time of upstream data of backhaul to dominant base host base station.
When having set respectively access the eat dishes without rice or wine initial time that up sequential switches and send backhaul to host base station and eat dishes without rice or wine after the delivery time of upstream data of backhaul of eating dishes without rice or wine, send the backhaul upstream data of eating dishes without rice or wine to host base station according to the delivery time setting by handover module 30, so far, completed the process that the sequential between access up link and backhaul uplink is switched.
The embodiment of the present invention, by determining the access of relay station up switching subframe numbers and the backhaul up transmission subframe numbers of eating dishes without rice or wine of eating dishes without rice or wine; According to the access up switching subframe numbers of eating dishes without rice or wine, set the access backhaul initial time that up sequential switches of eating dishes without rice or wine of eating dishes without rice or wine; And the switching calculating according to the host base station time delay of eating dishes without rice or wine, and the access transmission gap that up switching subframe numbers and backhaul eat dishes without rice or wine between up transmission subframe numbers of eating dishes without rice or wine, and according to default eat dishes without rice or wine time delay and the delay skew amount of eating dishes without rice or wine, set relay station and send the eat dishes without rice or wine delivery time of upstream data of backhaul to dominant base host base station.And relay station sends the backhaul upstream data of eating dishes without rice or wine to dominant base host base station according to this delivery time, thereby the sequential completing between access up link and backhaul uplink is switched.Adopt in this way, can solve the sequential switching problem of relay station between access up link and backhaul uplink, system is normally worked, and can not cause transfer of data pressure.
With reference to Fig. 7, Fig. 7 is the structural representation of the another embodiment of relay station of the present invention.
On the basis of above-described embodiment, relay station also comprises:
The second setting module 40, for according to the system configuration of LTE network, sets mode of operation.
In the present embodiment, determining that eat dishes without rice or wine up switching subframe numbers and backhaul of the access of relay station eat dishes without rice or wine before up transmission subframe numbers,,, in the time that system powers on the mode of operation of relay station to be arranged according to the system configuration of LTE network by the second setting module 40.In the present embodiment, the mode of operation of indication relay station comprises two kinds of time division multiplexing TDD and frequency division multiplexing model F DD.
Eat dishes without rice or wine before up transmission subframe numbers in eat dishes without rice or wine up switching subframe numbers and backhaul of the access of determining relay station, mode of operation to relay station arranges, further set access the eat dishes without rice or wine initial time that up sequential switches and send the eat dishes without rice or wine delivery time of upstream data of backhaul to host base station of backhaul of eating dishes without rice or wine for relay station, provide a great convenience.
With reference to Fig. 8, Fig. 8 is the structural representation of another embodiment of relay station of the present invention.
Continue in the present invention station one embodiment basis on, this device also comprises:
The 3rd setting module 51, for setting, to switch the time delay of eating dishes without rice or wine be 1/2nd time delay values of eating dishes without rice or wine.
In the present embodiment, in the switching calculating according to the host base station time delay of eating dishes without rice or wine, and the access transmission gap that up switching subframe numbers and backhaul eat dishes without rice or wine between up transmission subframe numbers of eating dishes without rice or wine, setting relay station sends backhaul and eats dishes without rice or wine before the delivery time of upstream data, first to receive the time delay N that eats dishes without rice or wine between relay station and the host base station of transmitting the host base station in LTE network by receiver module 50 to host base station
tA, this time delay N that eats dishes without rice or wine
tAfor the Physical Random Access Channel module by host base station obtains by calculating, when host base station calculates the time delay N that eats dishes without rice or wine
tAvalue after, this value can be sent to relay station by eating dishes without rice or wine.
Receive at relay station the time delay N that eats dishes without rice or wine that host base station sends
tAafter, the 3rd setting module 51 can be further according to this time delay N that eats dishes without rice or wine
tA, set the value of switching the time delay of eating dishes without rice or wine.In the present embodiment, can get 1/2nd and eat dishes without rice or wine time delay value as the eat dishes without rice or wine value of time delay of switching, switching the time delay of eating dishes without rice or wine is N
tA/ 2.
Send backhaul to host base station and eat dishes without rice or wine before the delivery time of upstream data, to receive the time delay of eating dishes without rice or wine between relay station and the host base station of transmitting host base station setting relay station, and according to this time delay N that eats dishes without rice or wine
tAfurther set and switch the value of time delay of eating dishes without rice or wine, send the backhaul setting of delivery time of upstream data of eating dishes without rice or wine to host base station to complete relay station, thereby further guarantee to provide a great convenience for the setting of delivery time.
With reference to Fig. 9, Fig. 9 is the structural representation of the first setting module in the relay station shown in Fig. 6.
Continue in the present invention station one embodiment basis on, the first setting module 20 comprises:
Determining unit 21, for determining the original position of the symbol that accesses the up switching subframe numbers of eating dishes without rice or wine;
The first setup unit 22, for by start position setting being the access described backhaul initial time that up sequential switches of eating dishes without rice or wine of eating dishes without rice or wine;
The second setup unit 23, is set as sending to host base station the eat dishes without rice or wine delivery time of upstream data of backhaul for eat dishes without rice or wine transmission gap sum that up switching subframe numbers and backhaul eat dishes without rice or wine between up transmission subframe numbers of switching is eated dishes without rice or wine time delay and access.
In the present embodiment, determine that at relay station eat dishes without rice or wine up switching subframe numbers K and backhaul of access eat dishes without rice or wine after the value of up transmission subframe numbers L, first determine the original position of the symbol that accesses the up switching subframe numbers K that eats dishes without rice or wine by determining unit 21, then by the first setup unit 22, the access backhaul initial time that up sequential switches of eating dishes without rice or wine of eating dishes without rice or wine according to this start position setting, in the present embodiment, the symbol of this K can be designated as M, is the access backhaul initial time that up sequential switches of eating dishes without rice or wine of eating dishes without rice or wine by the start position setting of M.
Access the symbol M of the up switching subframe numbers K that eats dishes without rice or wine, its value is the symbol numbers comprising in a subframe, and in the present embodiment, the span that is set as this M is between 0 ~ 13.And in the time of M>1, the value of M is not subject to the restriction of its original position, can get any time in 0 ~ 12 as the access backhaul initial time that up sequential switches of eating dishes without rice or wine of eating dishes without rice or wine.
Eat dishes without rice or wine after initial time that up sequential switches having set the access backhaul of eating dishes without rice or wine, by the second setup unit 23, the switching calculating according to the host base station time delay of eating dishes without rice or wine, and the access transmission gap that up switching subframe numbers and backhaul eat dishes without rice or wine between up transmission subframe numbers of eating dishes without rice or wine, set relay station to the eat dishes without rice or wine delivery time of upstream data of host base station transmission backhaul.Eat dishes without rice or wine transmission gap that up switching subframe numbers and backhaul eat dishes without rice or wine between up transmission subframe numbers of access is desired in the agreement of LTE network, can be designated as N
tA offset, the N of defined in agreement
tA offsetvalue be 624T
s.In the present embodiment, delivery time can be set as switching eat dishes without rice or wine time delay and the transmission gap sum that accesses eat dishes without rice or wine up switching subframe numbers and backhaul and eat dishes without rice or wine between up transmission subframe numbers, is N
tA/ 2+N
tA offset.
Be the access backhaul initial time that up sequential switches of eating dishes without rice or wine of eating dishes without rice or wine by the eat dishes without rice or wine start position setting of symbol of up switching subframe numbers of access; And switching the eat dishes without rice or wine transmission gap sum that up switching subframe numbers and backhaul eat dishes without rice or wine between up transmission subframe numbers of time delay and access of eating dishes without rice or wine is set as sending to host base station the eat dishes without rice or wine delivery time of upstream data of backhaul.Make relay station can send by delivery time the backhaul upstream data of eating dishes without rice or wine to host base station, thereby further guarantee to solve the sequential switching problem of relay station between access up link and backhaul uplink, system is normally worked, and can not cause transfer of data pressure.
The foregoing is only the preferred embodiments of the present invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes specification of the present invention and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. the method that LTE network trunk station sequential is switched, is characterized in that, comprising:
Relay station is according to default mode of operation and frame proportioning, determines access up switching subframe numbers and the backhaul up transmission subframe numbers of eating dishes without rice or wine of eating dishes without rice or wine;
According to described access switching that up switching subframe numbers, host base station the calculate time delay of eating dishes without rice or wine of eating dishes without rice or wine, and the access transmission gap that up switching subframe numbers and backhaul eat dishes without rice or wine between up transmission subframe numbers of eating dishes without rice or wine, set described access the eat dishes without rice or wine initial time that up sequential switches and to the eat dishes without rice or wine delivery time of upstream data of host base station transmission backhaul of described backhaul of eating dishes without rice or wine;
Send the backhaul upstream data of eating dishes without rice or wine to host base station according to described delivery time, the sequential completing between access up link and backhaul uplink is switched.
2. the method for claim 1, is characterized in that, is carrying out describedly according to the frame proportioning of the mode of operation of relay station and relay station, determines that eat dishes without rice or wine up switching subframe numbers and backhaul of access eat dishes without rice or wine before up transmission subframe numbers, also to comprise:
According to the system configuration of LTE network, set mode of operation.
3. method as claimed in claim 2, is characterized in that, described mode of operation is time division multiplexing and frequency division multiplexing pattern.
4. the method for claim 1, is characterized in that, is carrying out described setting access the eat dishes without rice or wine initial time that up sequential switches and send backhaul to host base station and eat dishes without rice or wine before the delivery time of upstream data, also to comprise of described backhaul of eating dishes without rice or wine:
Receive the time delay of eating dishes without rice or wine that the host base station in LTE network sends, described in the time delay of eating dishes without rice or wine be that the Physical Random Access Channel module of described host base station obtains by calculating;
Setting the described switching time delay of eating dishes without rice or wine is 1/2nd time delay values of eating dishes without rice or wine.
5. the method as described in any one in claim 1 to 4, it is characterized in that, described according to access switching that up switching subframe numbers, host base station the calculate time delay of eating dishes without rice or wine of eating dishes without rice or wine, and the access transmission gap that up switching subframe numbers and backhaul eat dishes without rice or wine between up transmission subframe numbers of eating dishes without rice or wine, set described access the eat dishes without rice or wine initial time that up sequential switches and comprising to the eat dishes without rice or wine delivery time of upstream data of host base station transmission backhaul of described backhaul of eating dishes without rice or wine:
Determining the eat dishes without rice or wine original position of symbol of up switching subframe numbers of described access, is the described access described backhaul initial time that up sequential switches of eating dishes without rice or wine of eating dishes without rice or wine by described start position setting;
Described switching the eat dishes without rice or wine transmission gap sum that up switching subframe numbers and backhaul eat dishes without rice or wine between up transmission subframe numbers of time delay and access of eating dishes without rice or wine is set as sending to host base station the eat dishes without rice or wine delivery time of upstream data of backhaul.
6. a relay station, is characterized in that, comprising:
Determination module, for according to default mode of operation and frame proportioning, determines access up switching subframe numbers and the backhaul up transmission subframe numbers of eating dishes without rice or wine of eating dishes without rice or wine;
The first setting module, the switching calculating for eat dishes without rice or wine according to described access up switching subframe numbers, the host base station time delay of eating dishes without rice or wine, and the access transmission gap that up switching subframe numbers and backhaul eat dishes without rice or wine between up transmission subframe numbers of eating dishes without rice or wine, set described access the eat dishes without rice or wine initial time that up sequential switches and to the eat dishes without rice or wine delivery time of upstream data of host base station transmission backhaul of described backhaul of eating dishes without rice or wine;
Handover module, for send the backhaul upstream data of eating dishes without rice or wine to host base station according to described delivery time, the sequential completing between access up link and backhaul uplink is switched.
7. relay station as claimed in claim 6, is characterized in that, also comprises:
The second setting module, for according to the system configuration of LTE network, sets mode of operation.
8. relay station as claimed in claim 7, is characterized in that, described mode of operation is time division multiplexing and frequency division multiplexing pattern.
9. relay station as claimed in claim 6, is characterized in that, also comprises:
Receiver module, the time delay of eating dishes without rice or wine sending for receiving the host base station of LTE network, described in the time delay of eating dishes without rice or wine be that the Physical Random Access Channel module of described host base station obtains by calculating;
The 3rd setting module is 1/2nd time delay values of eating dishes without rice or wine for setting the described switching time delay of eating dishes without rice or wine.
10. the relay station as described in any one in claim 6 to 9, is characterized in that, described the first setting module comprises:
Determining unit, for determining the eat dishes without rice or wine original position of symbol of up switching subframe numbers of described access;
The first setup unit, for by described start position setting being the described access described backhaul initial time that up sequential switches of eating dishes without rice or wine of eating dishes without rice or wine;
The second setup unit, is set as sending to host base station the eat dishes without rice or wine delivery time of upstream data of backhaul for eat dishes without rice or wine transmission gap sum that up switching subframe numbers and backhaul eat dishes without rice or wine between up transmission subframe numbers of described switching is eated dishes without rice or wine time delay and access.
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| CN115361716A (en) * | 2022-08-16 | 2022-11-18 | 国网福建省电力有限公司 | SIM switching method based on random access air interface time delay |
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