CN102695285A - Random access method under multi-carrier scenarios, and device - Google Patents
Random access method under multi-carrier scenarios, and device Download PDFInfo
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Abstract
The invention discloses a random access method under multi-carrier scenarios, and a device. The method comprises: a piece of user equipment UE receives a signal for configuring or activating a new service cell for the UE; and if the signaling includes a reference service cell indication which indicates a downlink carrier of at least one service cell as a reference service cell, random access is initiated on the new service cell by the UE with the reference service cell as a time reference for sending an uplink random access code. The method and the device of the invention can improve the probability of successful random access of the UE, so that a new carrier can be quickly used for data transmission by the UE.
Description
Technical field
The present invention relates to the mobile communication technology field, be specifically related to accidental access method and device under a kind of multicarrier scene.
Background technology
At LTE (Long-term Evolution; Long Term Evolution) in the system, the sub-district is actually a pair of up-downgoing carrier wave, and the terminal is through behind certain sub-district connecting system; The a pair of up-downgoing carrier wave that can use this sub-district to provide carries out transfer of data, and the frequency domain span of this a pair of up-downgoing carrier wave is called bandwidth.Bandwidth of cell among the LTE can comprise 1.4MHz, 3MHz, 5MHz, 10MHz, 15MHz, 20MHz, and wherein, maximum bandwidth is 20MHz.
UE is a benchmark with the descending sub frame border of Pcell (Primary Serving Cell, basic service sub-district) when initiating random access procedure, sends uplink random access code (Preamble).
A kind of scene is to have under the scene of repeater, if the downstream signal of the PCell that UE receives is the signal of transmitting through the repeater, and the length that then up-downgoing time delay sum is allowed greater than Preamble; Another kind of scene is to introduce RRU (Remote Radio Unit; Remote Radio Unit) under the border, field; If the PCell downstream signal that UE receives is the signal that sends through RRU, the length that then up-downgoing time delay sum is allowed greater than Preamble, these two kinds of scenes make the base station can't receive the Preamble that UE sends; Cause UE can't increase new carrier wave, reduce the probability of success that UE inserts at random.
Summary of the invention
The present invention provides accidental access method and device under a kind of multicarrier scene, improves the probability of success that UE inserts at random.
On the one hand, accidental access method under a kind of multicarrier scene is provided, has comprised:
What user terminal UE received the base station transmission is said UE configuration or the signaling that activates new Serving cell;
If comprise the reference cell indication in said configuration or the activation signaling; It is reference cell that said reference cell indication is used to indicate the descending carrier of at least one Serving cell; Then said UE as the time reference that sends the uplink random access code, initiates random access procedure with said reference cell on said new Serving cell.
On the other hand, accidental access method under the another kind of multicarrier scene is provided, has comprised:
When the base station is that a connected state user terminal UE is when increasing new Serving cell; If said base station confirm as new Serving cell that said UE increases can not with the shared up transmitting time lead of the original any Serving cell of said UE; Said base station confirms that the descending carrier of Serving cell is a reference cell, said reference cell is sent the time reference of uplink random access code as said UE;
Said base station is sent as the signaling that said UE disposed or activated new Serving cell to said UE; Comprise the reference cell indication in the said signaling; It is reference cell with the descending carrier of at least one Serving cell that said reference cell indication is used to indicate UE; So that said UE initiates random access procedure with the time reference of said reference cell as transmission uplink random access code on said new Serving cell.
On the other hand, accidental access device under a kind of multicarrier scene is provided, has comprised:
Transmission unit is used to receive that the base station sends for said UE configuration or activate the signaling of new Serving cell;
First confirms the unit; Be used for if the said signaling that said transmission unit receives comprises the reference cell indication; It is reference cell that said reference cell indication is used to indicate the descending carrier of at least one Serving cell, with the time reference of said reference cell as transmission uplink random access code;
First trigger element is used for the time reference according to the definite transmission uplink random access code in said first definite unit, on said new Serving cell, initiates random access procedure.
On the other hand, accidental access device under a kind of multicarrier scene is provided, has comprised:
Confirm the unit; Be used for when the user terminal UE for a connected state increases new Serving cell; If be the new Serving cell that increases of said UE can not with the shared up transmitting time lead of the original any Serving cell of said UE; The descending carrier of confirming Serving cell is a reference cell, said reference cell is sent the time reference of uplink random access code as said UE;
Processing unit is used for adding the reference cell information that said definite unit is confirmed in the signaling that disposes or activate new Serving cell for said UE;
Transmitting element; Be used for being sent as the signaling that said UE disposed or activated new Serving cell to said UE; Comprise the said reference cell information that said processing unit adds in the said signaling; So that said UE initiates random access procedure with the time reference of said reference cell as transmission uplink random access code on said new Serving cell.
Accidental access method and device under the multicarrier scene that the embodiment of the invention provides; UE disposes or activates the signaling of new Serving cell through what receive that the base station sends for this UE; If comprise the reference cell indication in the said signaling; It is reference cell that said reference cell indication is used to indicate the descending carrier of at least one Serving cell, and UE as the time reference that sends the uplink random access code, initiates random access procedure with said Reference Services on said new Serving cell.Thereby can make the base station is that UE selects the benchmark of the littler descending carrier of propagation delay time as transmission uplink random access code on new Serving cell; The uplink random access code that the base station is received falls within its scope of allowing, improves the probability of success that UE inserts at random.
Correspondingly; Accidental access method and device under the embodiment of the invention multicarrier scene; When the base station is that a connected state UE is when increasing new Serving cell; If said base station confirm as new Serving cell that this UE increases can not with the shared up transmitting time lead of the original any Serving cell of this UE; Said base station confirms that the descending carrier of at least one Serving cell is a reference cell, and with the time reference of said reference cell as this UE transmission uplink random access code, said base station is sent as the signaling that this UE disposed or activated new Serving cell to this UE; Comprise the reference cell indication in the said signaling; It is reference cell with the descending carrier of at least one Serving cell that said reference cell indication is used to indicate UE, so that this UE initiates random access procedure with the time reference of said reference cell as transmission uplink random access code on said new Serving cell.Insert probability of successful at random thereby can increase UE, UE can be received through new Serving cell fast send data, improve data transmission bauds.
Description of drawings
In order to be illustrated more clearly in the application embodiment or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use among the embodiment below; Obviously; The accompanying drawing that describes below only is some embodiment that put down in writing among the present invention, for those of ordinary skills, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is existing random access procedure flow chart;
Fig. 2 is the sequential chart in the existing random access procedure;
Fig. 3 is a kind of flow chart of accidental access method under the embodiment of the invention multicarrier scene;
Fig. 4 is a kind of structural representation of accidental access device under the embodiment of the invention multicarrier scene;
Fig. 5 is the another kind of flow chart of accidental access method under the embodiment of the invention multicarrier scene;
Fig. 6 is a kind of structural representation of accidental access device under the embodiment of the invention multicarrier scene;
Fig. 7 is the another kind of structural representation of accidental access device under the embodiment of the invention multicarrier scene.
Embodiment
In order to make those skilled in the art person understand the scheme of the embodiment of the invention better, the process of at first UE under the multicarrier scene in the existing protocol being initiated to insert is at random below done simple declaration.
3GPP (The 3rd Generation Partnership Project, third generation partner program) has introduced the notion of CA (Carrier Aggregation, carrier aggregation).So-called CA joins together a plurality of up and descending carriers, for single UE data transport service is provided together.The mode of this carrier wave associating comes into force to single UE, that is to say, having only network side is UE configuration and the associating that has activated a plurality of carrier waves, and UE could use, otherwise UE can only use the carrier wave of that sub-district that oneself belongs to.
If the UE of connected state need newly dispose a Serving cell, a dedicated signaling flow process can be passed through in the base station, and with the configuration information notice UE of new Serving cell, afterwards, again through a signaling process, for example MAC layer signaling notifies UE to activate new Serving cell.After configuration and activating, if this new Serving cell and original Serving cell can shared up transmitting time lead T
A, UE can use this new Serving cell transceive data immediately; If this new Serving cell and original Serving cell can not shared up transmitting time lead T
A, UE just needs to initiate random access procedure, to obtain the up transmitting time lead T that new Serving cell uses
A, could use new Serving cell transceive data bag.
Under the multicarrier scene, UE has been configured a plurality of carrier waves, and a up-link carrier and a descending carrier are wherein arranged, and is called as the basic service sub-district.The effect of basic service sub-district is equivalent to original single Serving cell, and UE accomplishes flow processs such as safety detection, the transmission of physical layer upstream control signaling through the basic service sub-district.In addition, under the situation of single TA, UE initiates random access procedure if desired, also must on the basic service sub-district, accomplish.
Inserting at random is the first step that UE and base station connect; As shown in Figure 1, in random access procedure, UE selects a uplink random access code to send to the base station at random; So that the up transmitting time lead of base station measurement UE; The up transmitting time lead of adjustment UE is that UE distributes some ascending resources according to measurement result simultaneously, makes UE utilize these ascending resources to initiate to insert request message.。
Fig. 2 is the sequential chart in the random access procedure, and random access procedure is following:
201. the base station is sent a plurality of descending sub frames continuously, such as descending sub frame 21;
202. delay when these descending sub frames pass through certain downlink transfer, arrive UE, such as the descending sub frame 22 shown in the figure;
203.UE be as the criterion with own detected certain descending sub frame border, send the uplink random access code; Among the figure, see to align with the border of the descending sub frame 22 that UE receives in the subframe border of transmission uplink random access code from the angle of UE;
204.UE delay during the uplink of the uplink random access code that sends process, arrive the base station;
205. the subframe border time difference between descending sub frame that base station measurement oneself sends and the uplink random access code received is as up transmitting time lead T
A, base station measurement is the subframe border difference between descending sub frame 21 and the uplink random access code received among the figure.Should notify UE by up transmitting time lead, UE shifts to an earlier date T on the time reference of original transmission uplink random access code
ASend follow-up upstream data, i.e. sub-frame of uplink 23 among the figure;
206.UE the sub-frame of uplink 23 that sends is delayed during through certain uplink, arrives the base station, i.e. sub-frame of uplink 24 shown in the figure, and its subframe border is just and the descending sub frame boundary alignment that sends of base station.
As can beappreciated from fig. 2, the Timing Advance T that measures according to the uplink random access code of base station
A, be exactly in fact the up-downgoing propagation delay time sum of UE, i.e. T
A=T_UL+T_DL.Wherein, T_UL representes the uplink time delay, and T_DL representes the downlink transfer time delay.
Because different UE is far and near different apart from the base station, so the T that records in the random access procedure
AAlso different.Under the normal condition, the up-downgoing propagation delay time sum of UE has certain upper limit, is called Preamble
CP, exceeding this upper limit, the base station just can't have been discerned after receiving the uplink random access code.So during the network planning, the up-downgoing propagation delay time sum that needs to guarantee Cell Edge User is less than this upper limit, this factor has determined the radii size of sub-district.The sub-district is in case plan Preamble
CPGenerally can arbitrarily not change.In the CA scene; If only safeguard a TA value between UE and the base station; UE must do on the basic service sub-district at random and insert, and its implication is exactly the up-link carrier transmission random access code of UE through the basic service sub-district, after the uplink random access code is received in the base station; Descending sub frame with basic sub-district is a benchmark, Measuring Time lead T
A
On the one hand, behind the introducing repeater, can bring certain influence to the random access procedure of UE, because some extra propagation delay times can be brought in the repeater, if total up-downgoing propagation delay time summation is greater than Preamble
CP, the base station just can't be discerned after receiving the uplink random access code, also just can't measure Timing Advance, and this can cause access failure at random.
On the other hand, for guaranteeing covering effect of signals, wireless communication system has adopted radio frequency remote unit RRU; RRU is to use optical fiber that the radio-frequency module of base station is pulled out; Separate with the central processing module of base station, adopt RRU, can save the needed a large amount of machine rooms of conventional solution; Through adopting a large amount of fiber optic stretch of big capacity macro base station support, can realize the conversion between capacity and the covering simultaneously.
But these two kinds of scenes make the base station can't receive the Preamble that UE sends, and cause UE can't increase new carrier wave, reduce the probability of success that UE inserts at random.
In order to solve above-mentioned technical problem; The embodiment of the invention provides accidental access method and equipment under a kind of multicarrier scene, can improve the probability of success that UE inserts at random, in order to make the object of the invention, technical scheme and advantage clearer; To combine accompanying drawing that the present invention is done to describe in detail further below; Obviously, described embodiment only is a part of embodiment of the present invention, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making all other embodiment that obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
As shown in Figure 3, be a kind of flow chart of accidental access method under the embodiment of the invention multicarrier scene, comprising:
Such as, need be transferred to this UE when there is mass data the base station, and the current carrier wave of UE just need be that the UE of a connected state increases new Serving cell can not carry so multidata the time.
The base station is according to the frequency range at newly-increased Serving cell place, the position at UE place and the information such as position of repeater, decision should newly-increased Serving cell whether can with the shared up transmitting time lead of original Serving cell.Such as; The frequency range and the original frequency range of UE at newly-increased Serving cell place are separated by far away; Perhaps the position at UE place is just near the repeater; And only there is amplification this repeater to original Serving cell or newly-increased Serving cell, this new Serving cell just can not with the shared up transmitting time lead of original Serving cell.
Because when UE initiates random access procedure; Need on new Serving cell, send the uplink random access code, therefore, in embodiments of the present invention; The base station need confirm that the border of descending carrier that which Serving cell UE can adopt is as the benchmark that sends the uplink random access code; That is to say, when the base station confirms that this UE sends the uplink random access code, can be used as the descending carrier of the Serving cell of benchmark use.Particularly; The base station can be judged according to following one or more parameters: the length of fiber between the effective radius (promptly be the center with the repeater, UE receives that the signal of repeater is stronger than base station signal in much scopes) of the position of repeater, the logical scope (signal that is which frequency can amplify via the repeater) of the band of repeater, repeater, the propagation delay time (owing to introducing straight inbound newly-increased time delay) of repeater, new Serving cell place frequency range, RRU and the base station, the position (can obtain through positioning function or other modes) of UE etc.; Wherein, the information of relevant repeater can obtain according to configuration information.
If the signal strength signal intensity that the base station is confirmed to arrive UE after the downstream signal of said new Serving cell is transmitted through the repeater is greater than the direct transfer signal strength signal intensity of base station to UE; And the time delay of the signal of transmitting through the repeater is during greater than certain threshold value; Just can indicate UE to use another border, as the benchmark that on new Serving cell, sends the uplink random access code without the descending carrier of the Serving cell of repeater forwarding.
Above-mentioned threshold value can be disposed by the base station, with the Preamble of said new Serving cell
CPRelevant, generally speaking than the Preamble of new Serving cell
CPLittle, if, can cause up-downgoing propagation delay time sum greater than Preamble because adopt the signal of transmitting through the repeater as the benchmark that on new carrier wave, sends the uplink random access code
CP, cause the base station can't correctly arrive the uplink random access code.
This signaling can be the signaling of a special use, such as " Serving cell increase " signaling, certainly, does not do qualification for the title embodiment of the invention of this signaling.
The reference cell indication can be a cell index, and this index value is indicated a sub-district uniquely; Also can be a bit map, corresponding Serving cell of each bit in this bitmap, if bit is 0, the corresponding Serving cell of expression is Serving cell as a reference not, if bit is 1, the corresponding Serving cell of expression is Serving cell as a reference.
In embodiments of the present invention, the base station can be according at least one descending carrier of confirming as said UE time reference in the position of length of fiber between the position of repeater, the logical scope of band of repeater, the effective radius of repeater, the propagation delay time of repeater, the processing delay of repeater, new Serving cell place frequency range, RRU and the base station and UE.
In concrete the application; The base station confirms that the descending carrier of Serving cell is a reference cell; When said reference cell is sent the time reference of uplink random access code as UE; The base station can confirm that the descending carrier of at least one other Serving cell except that the basic service sub-district is a reference cell, the descending carrier of said at least one other Serving cell except that the basic service sub-district is sent the time reference of uplink random access code as UE.
Correspondingly; When the base station is sent as this UE configuration or activates the signaling of new Serving cell to UE; The base station can be sent as the signaling that this UE disposed or activated new Serving cell to UE, in said configuration or activation signaling, comprises the indication of the descending carrier of at least one other Serving cell except that the basic service sub-district.
In addition; The base station confirms that the descending carrier of Serving cell is a reference cell; When said reference cell is sent the time reference of uplink random access code as UE; The base station can also confirm that the descending carrier of at least one following other Serving cell except that new Serving cell is a reference cell, the descending carrier of said at least one Serving cell except that new Serving cell is sent the time reference of uplink random access code as UE.
Correspondingly; When the base station is sent as this UE configuration or activates the signaling of new Serving cell to UE; The base station can be sent as the signaling that said UE disposed or activated new Serving cell to UE, in said configuration or activation signaling, comprises the descending carrier indication of at least one Serving cell except that the basic service sub-district.
In embodiments of the present invention, the base station can adopt multiple mode in said signaling, to add to be used for the information that this UE carries out random access procedure.Such as:
(1) in said signaling, increases a reference cell indication; Be used to represent descending carrier that which Serving cell UE can use Serving cell as a reference; Then said UE as the time reference that sends the uplink random access code, initiates random access procedure with said reference cell on said new Serving cell.
Particularly, if UE can use the descending carrier of basic service sub-district as benchmark, then in said signaling, do not add the downlink carrier information of said basic service sub-district; If UE can use the descending carrier of other Serving cells outside the basic service sub-district as benchmark, in said signaling, add the downlink carrier information of said other Serving cells.
(2) downlink carrier information of the said Serving cell of interpolation in said signaling is so that UE is with the benchmark of this descending carrier as transmission uplink random access code.
Particularly; If the base station is confirmed UE and can be used the benchmark of the descending carrier of basic service sub-district as transmission uplink random access code; Then the base station can increase sign in said signaling, uses the benchmark of the descending carrier of basic service sub-district as transmission uplink random access code with notice UE; If the base station is confirmed UE and can not be used the benchmark of the descending carrier border of basic service sub-district as transmission uplink random access code; Then in said signaling, increase sign, notice UE uses the descending carrier of which Serving cell as the benchmark that sends the uplink random access code; If said new Serving cell can with the shared up transmitting time lead of original Serving cell of said UE, then in said signaling, comprise the sign of said original Serving cell.
The descending carrier of UE use basic service sub-district or the descending carrier of other Serving cells that is to say, no matter all need be pointed out in said signaling as the benchmark that sends the uplink random access code clearly.
(3) default mode.
A kind of special case when this mode only is the UE descending carrier that can use the basic service sub-district as the benchmark that sends the uplink random access code; Promptly in said process; If the base station confirms that the border of descending carrier that UE can use the basic service sub-district is as the benchmark that sends the uplink random access code; Also can in said signaling, not increase any sign, UE thinks that defaultly the descending carrier border of adopting the basic service sub-district is as the benchmark that sends the uplink random access code.Like this, can further save signaling consumption.
Certainly, the embodiment of the invention does not limit which kind of mode of employing, initiates to insert at random the information of the descending carrier that uses as benchmark when sending the uplink random access code as long as said signaling can clearly illustrate that UE.
The reference cell indication can be a cell index, and this index value is indicated a sub-district uniquely; Also can be a bit map, corresponding Serving cell of each bit in this bitmap, if bit is 0, the corresponding Serving cell of expression is Serving cell as a reference not, if bit is 1, the corresponding Serving cell of expression is Serving cell as a reference.
It is thus clear that; Accidental access method under the embodiment of the invention multicarrier scene; Be that the UE of a connected state is when increasing new Serving cell in the base station; If the base station confirm as new Serving cell that this UE increases can not with the shared up transmitting time lead of the original any Serving cell of this UE, the base station confirms that the descending carrier of Serving cell is a reference cell, said reference cell is sent the time reference of uplink random access code as said UE; The base station is sent as the signaling that this UE disposed or activated new Serving cell to this UE; And in this signaling, comprise reference cell indication; Being used to indicate UE with indication is reference cell with the descending carrier of at least one Serving cell; So that this UE initiates random access procedure with the time reference of said reference cell as transmission uplink random access code on said new Serving cell.Like this, the base station can select the littler descending carrier of propagation delay time as the benchmark that sends the uplink random access code for UE, and the uplink random access code that base station side is received can fall within its scope of allowing, thereby improves the probability of success that inserts at random.
In addition; Can also may further comprise the steps in embodiments of the present invention: if said new Serving cell can with the shared up transmitting time lead of original certain Serving cell of this UE; Then in said signaling, comprise the sign of this original Serving cell, thereby reduce unnecessary random access procedure.Certainly, also can set default value, be used to represent to use the up transmitting time lead of the up transmitting time lead of basic service sub-district as new Serving cell.Like this, can further save signaling consumption.
Need to prove; Transmission uplink random access code described in the foregoing description refers on new Serving cell and sends the uplink random access code; If in follow-up description, do not specify, the transmission uplink random access code of being mentioned is meant too on new Serving cell and sends the uplink random access code.
Correspondingly, the embodiment of the invention also provides accidental access device under a kind of multicarrier scene, and is as shown in Figure 4, is a kind of structural representation of this device.
In this embodiment, said device comprises: confirm unit 401, processing unit 402 and transmitting element 403.Wherein:
Confirm unit 401; Be used for when the UE for a connected state increases new Serving cell; If the new Serving cell that increases for this UE can not with the shared up transmitting time lead of the original any Serving cell of this UE; The descending carrier of confirming Serving cell is a reference cell, said reference cell is sent the time reference of uplink random access code as this UE;
Processing unit 402 is used for adding the reference cell information that said definite unit 401 is confirmed in the signaling that disposes or activate new Serving cell for UE;
Transmitting element 403; Be used for being sent as the signaling that this UE disposed or activated new Serving cell to UE; Comprise the said reference cell information that said processing unit adds in the said signaling; So that this UE initiates random access procedure with the time reference of said reference cell as transmission uplink random access code on said new Serving cell.
When specifically using, said definite unit 401 can be according at least one definite descending Serving cell as said UE time reference in the position of the position of repeater, the logical scope of band of repeater, the effective radius of repeater, the propagation delay time of repeater, the processing delay of repeater, new Serving cell place frequency range and UE.And, confirm that can there be multiple implementation unit 401, such as:
The descending carrier of confirming unit 401 definite at least one other Serving cell except that the basic service sub-district is a reference cell, other Serving cell descending carriers of said at least one except that the basic service sub-district is sent the time reference of uplink random access code as UE.Correspondingly, processing unit 402 adds the descending carrier indication of at least one other Serving cell except that the basic service sub-district in said signaling.
Perhaps; Confirm that unit 401 confirms that the descending carrier of at least one other Serving cell is a reference cell except that new Serving cell, with the descending carrier of said at least one other Serving cell except that new Serving cell time reference as said UE transmission uplink random access code.Correspondingly, processing unit 402 adds the descending carrier indication of at least one other Serving cell except that new Serving cell in said signaling.
Perhaps, confirm that unit 401 definite descending Serving cells as the UE time reference are the descending Serving cell of basic service sub-district.Correspondingly, processing unit 402 does not add the descending service cell information of the said basic service sub-district of confirming that unit 401 is confirmed in said signaling.
Confirm that unit 401 definite descending Serving cells as the UE time reference are the descending Serving cell of new Serving cell.Correspondingly, processing unit 402 does not add the descending service cell information of the said new Serving cell of confirming that unit 401 is confirmed in said signaling.
Need to prove; In embodiments of the present invention; Said transmitting element 403 also can be used for being sent as the signaling that this UE disposed or activated new Serving cell to UE, in said signaling, does not add the information of said descending Serving cell, so that this UE obtains descending service cell information; The said descending Serving cell that obtains as the time reference that sends the uplink random access code, is initiated random access procedure on said new Serving cell.
In addition, in embodiments of the present invention,, then in said signaling, add the sign of said original Serving cell if said processing unit 402 also can be used for the shared up transmitting time lead of original Serving cell of said new Serving cell and UE.
The reference cell indication can be a cell index, and this index value is indicated a sub-district uniquely; Also can be a bit map, corresponding Serving cell of each bit in this bitmap, if bit is 0, the corresponding Serving cell of expression is Serving cell as a reference not, if bit is 1, the corresponding Serving cell of expression is Serving cell as a reference.
It is thus clear that; Accidental access device under the multicarrier scene of the embodiment of the invention; When the UE that is a connected state increases new Serving cell; Can be for UE to select the benchmark of the descending carrier of the littler Serving cell of propagation delay time as transmission uplink random access code, the uplink random access code that base station side is received can fall within its scope of allowing, thereby improves the probability of success that inserts at random.
Need to prove that accidental access device can be the part of base station or base station under the embodiment of the invention multicarrier scene.
Correspondingly, the embodiment of the invention also provides accidental access method under a kind of multicarrier scene, and is as shown in Figure 5, is a kind of flow chart of accidental access method under this multicarrier scene.
In this embodiment, may further comprise the steps:
Can know by the description in the embodiment of the invention of front; The base station needs UE to initiate under the situation of random access procedure when confirm increasing said new Serving cell; Need to confirm that said UE can be used as the reference cell that benchmark uses when sending the uplink random access code; And through the indication of signaling UE reference cell; Is reference cell to indicate UE with the descending carrier of at least one Serving cell, so that UE initiates random access procedure with the time reference of said reference cell as transmission uplink random access code on said new Serving cell.Wherein, the reference cell indication can have the multiple mode of carrying.Therefore, after UE receives said signaling, can know whether initiate random access procedure according to said signaling, and the information that can be used as the reference cell that benchmark uses when sending the uplink random access code.Such as:
If comprise the reference cell indication in the said signaling; It is reference cell that said reference cell indication is used to indicate the descending carrier of at least one Serving cell except that the basic service sub-district; In this case, UE will be except that the basic service sub-district descending carrier of at least one Serving cell as the time reference that sends the uplink random access code.
If comprise the reference cell indication in the said signaling; It is reference cell that said reference cell indication is used to indicate the descending carrier of at least one Serving cell except that new Serving cell; In this case, UE will except that the descending carrier of at least one Serving cell the new Serving cell as the time reference that sends the uplink random access code.
If do not comprise the reference cell indication in the said signaling.In this case; UE obtains the downlink carrier information of at least one Serving cell; With the descending carrier of at least one Serving cell that obtains Serving cell as a reference; UE as the time reference that sends the uplink random access code, initiates random access procedure with said reference cell on said new Serving cell.
Particularly, UE can obtain the downlink carrier information of basic service sub-district, with the descending carrier of the basic service sub-district that obtains Serving cell as a reference, UE with the descending carrier of said basic service sub-district as the time reference that sends the uplink random access code; Perhaps, UE obtains the downlink carrier information of new Serving cell, with the descending carrier of at least one the new Serving cell that obtains Serving cell as a reference, UE with the descending carrier of said at least one new Serving cell as the time reference that sends the uplink random access code.
The information that comprises the original Serving cell of UE in the said signaling, and indication UE uses the up transmitting time lead of original Serving cell.
In this case, UE uses the up transmitting time lead of said original Serving cell, on said new Serving cell, sends upstream data and signaling.
It is thus clear that; Accidental access method under the embodiment of the invention multicarrier scene; UE receive that the base station sends for this UE configuration or activate the signaling of new Serving cell, newly initiating random access procedure on the Serving cell, insert probability of successful at random according to the reference cell indication that comprises in this signaling thereby can increase; Increase new Serving cell fast, improve data transmission bauds.
Correspondingly, the embodiment of the invention also provides accidental access device under a kind of multicarrier scene, and is as shown in Figure 6, is a kind of structural representation of this device.
In this embodiment, said device comprises:
First confirms unit 602; Be used for if the said signaling that said transmission unit 601 receives comprises the reference cell indication; It is reference cell that said reference cell indication is used to indicate the descending carrier of at least one Serving cell, with the time reference of said reference cell as transmission uplink random access code;
Accidental access device under the multicarrier scene of the embodiment of the invention; Can for disposing or activate the reference cell of carrying in the signaling of new Serving cell, UE indicate according to what sent the base station; Confirm to send the time reference of uplink random access code, on said new Serving cell, initiate random access procedure.Insert probability of successful at random thereby can increase, increase new Serving cell fast, improve data transmission bauds.
In embodiments of the present invention, what sent the base station can have multiple mode for UE disposes or activate the reference cell indication of carrying in the signaling of new Serving cell, and correspondingly, said first confirms that also can there be multiple implementation unit 602, such as:
First confirms that unit 602 comprises the reference cell indication in said signaling; When the indication of said reference cell is used to indicate the descending carrier of at least one Serving cell except that the basic service sub-district to be reference cell, will be except that the basic service sub-district the descending carrier of at least one Serving cell as the time reference of transmission uplink random access code;
Perhaps; First confirms that unit 602 comprises the reference cell indication in said signaling; When the indication of said reference cell is used to indicate the descending carrier of at least one Serving cell except that new Serving cell to be reference cell, will be except that the descending carrier of at least one Serving cell the new Serving cell time reference as transmission uplink random access code.
In said signaling, can also not comprise the reference cell indication, for this reason, in another embodiment shown in Figure 7, said device also can further comprise:
Acquiring unit 701 does not comprise reference cell indication if be used for said signaling, obtains the downlink carrier information of at least one Serving cell, with the descending carrier of at least one Serving cell that obtains Serving cell as a reference;
Second confirms unit 702, and the reference cell that is used for said acquiring unit 701 is obtained is as the time reference that sends the uplink random access code;
When concrete the application, said acquiring unit 701 can obtain the descending service cell information of basic service sub-district; Correspondingly, said second confirm the basic service sub-district that unit 702 obtains said acquiring unit 701 descending carrier Serving cell as a reference, with the descending carrier of said basic service sub-district as the time reference that sends the uplink random access code.Perhaps, said acquiring unit 701 can also obtain the descending service cell information of new Serving cell; Correspondingly, said second confirm at least one new Serving cell that unit 702 obtains said acquiring unit 701 descending carrier Serving cell as a reference, with said at least one new Serving cell as the time reference that sends the uplink random access code.
In said signaling, do not comprise under the situation of reference cell indication, said signaling can comprise the information of original Serving cell.In this case; Said transmission unit 601 also is used for using the up transmitting time lead of said original Serving cell on said new Serving cell, to send upstream data and signaling if the said signaling that said transmission unit 601 receives comprises the information of original Serving cell.
Need to prove that accidental access device can be the part of UE or UE under the embodiment of the invention multicarrier scene.
Correspondingly, the embodiment of the invention also provides accidental access method under a kind of multicarrier scene:
UE selects the transmitting time reference of the descending carrier of propagation delay time minimum service sub-district as Preamble.
Carry out the downstream signal of a plurality of Serving cells of polymerization; When send the base station, be synchronous; These downstream signals are through the transmission of eating dishes without rice or wine, and time delay separately is different, and the time that finally arrives UE is also inequality; So see from the angle of UE, the downstream signal of a plurality of Serving cells of these polymerizations is successively to arrive.Arrive the downstream signal of UE earlier, its propagation delay time is shorter; The back arrives the downstream signal of UE, and its propagation delay time is longer.Under the situation of repeater, the signal of a plurality of Serving cells simultaneously base station sets out, have transmit via the repeater after issue UE again, what have directly mails to UE from the base station, the descending carrier signal of these Serving cells can successively arrive UE.Under the situation of using RRU; The Serving cell signal that has passes to RRU through optical fiber from the base station; Pass to UE from RRU through wave point again; The Serving cell signal that has directly passes to UE from the radio-frequency module of base station through wave point, and radio-frequency module and baseband module are put together, so also can cause the descending carrier signal of a plurality of Serving cells can successively arrive UE.
Because the difference between the descending carrier signal propagation delay time of these Serving cells is roughly in the us level; So UE can judge the signal propagation delay time minimum of the descending carrier of which Serving cell; Thereby select a Serving cell downstream signal of receiving at first voluntarily, as the benchmark that sends Preamble.
In this embodiment, may further comprise the steps:
701, UE receives being used to that the base station sends and indicates said base station to dispose or activate the signaling of new Serving cell for this UE.
Optional; 702; UE receives the threshold value of the difference of the downlink transfer time delay of sending the base station, and said threshold value is the threshold value of downlink transfer time delay and the difference of the downlink transfer time delay of other Serving cells except that the Serving cell of minimum downlink transfer time delay of the Serving cell of minimum downlink transfer time delay.
UE can be UE configuration or the signaling that activates new Serving cell or through obtaining the threshold value of the difference of this downlink transfer time delay in the signaling that activates new Serving cell through the base station.
703a; If indication UE initiates random access procedure in the said signaling; Said random access procedure is used for obtaining up transmitting time lead; Then UE selects the minimum Serving cell of downlink transfer time delay Serving cell as a reference, with the transmitting time reference of said reference cell as Preamble.
Wherein, step 703a can carry out after receiving the configuration that send the base station or activating the signaling of new Serving cell, also can after the signaling of receiving the new Serving cell of activation that send the base station, carry out.
703b; If indicated the threshold value of difference of the downlink transfer time delay of other Serving cell the minimum Serving cell of downlink transfer time delay and the Serving cell that removes downlink transfer time delay minimum in the said signaling; And UE detects at least one Serving cell in other Serving cell except that the Serving cell of downlink transfer time delay minimum; The difference of the propagation delay time of the Serving cell that the downstream signal propagation delay time of this at least one Serving cell and downlink transfer time delay are minimum is less than said threshold value, and UE also can select at least one Serving cell as the time reference that sends Preamble arbitrarily.
Wherein step 703a and step 703b are two steps arranged side by side.
Wherein said " threshold value " also can be stipulated by agreement, also can be disposed by network side entity.
704, UE uses selected reference cell, send Preamble after; Receive the up transmitting time adjustment order that send the base station; And on the time basis that sends Preamble, adjust transmitting time forward or backward, send the upstream data of back according to the adjustment order of base station.
For being in the UE that the downlink transfer time delay changes violent area; The priority situation of the downstream signal arrival UE of each Serving cell possibly can't be foreseen in the base station; Also just can't correctly dispose reference cell; Through the embodiment of the invention, the reference cell that UE uses in the time of can confirming voluntarily to send Preamble, the base station need not to dispose reference cell.Make and select the descending reference Serving cell in this way; Can guarantee that uplink time delay and downlink transfer time delay sum are minimum; Perhaps can be in the scope that the system of assurance allows, thus the probability that base station side correctly detects Preamble improved, also just improved the probability of success that UE inserts at random.
Correspondingly; The embodiment of the invention also provides accidental access method under the another kind of multicarrier scene: the base station is according to whether increasing Serving cell newly through the repeater, whether via information such as RRU; When notice UE sends out preamble, need the Serving cell and the deviate of reference.
In this embodiment, may further comprise the steps:
801, UE receives being used to that the base station sends and indicates said base station to dispose or activate the signaling of new Serving cell for this UE.
802, the descending carrier of the new Serving cell of reference that can implicit expression or the descending carrier of main Serving cell are reference, and optional UE receives the descending reference Serving cell and the time corresponding deviation that are used to indicate said base station configuration that send the base station.
Wherein, these two parameters of descending reference Serving cell and time corresponding deviation can be included in the described configuration of step 1 or activate in the signaling of new Serving cell, perhaps are included in the signaling that activates new Serving cell.
803; If indication UE initiates random access procedure in the said signaling; This random access procedure can be used to obtain which Serving cell up transmitting time lead, indication UE use when inserting at random descending carrier as a reference and extra time deviation value; Then UE uses service specified cell downlink carrier wave as a reference, adjusts a time deviation value more on this basis forward or backward, as the transmitting time reference of Preamble.
Wherein, this time deviation value can be greater than zero, also can be less than zero.Its implication may be prescribed as: " adjust forward greater than null representation, adjust backward " less than null representation, and also can be opposite.In fact, in most cases, UE need adjust up transmitting time lead forward, at this moment, also can stipulate this adjustment time only get on the occasion of, after UE receives said time deviation, adjust up transmitting time lead forward.
In the base, indication UE initiates random access procedure, and this indication can be placed on the described configuration of step 1 or activate in the signaling of new Serving cell, perhaps is placed in the signaling that activates new Serving cell.
Wherein, 803, can after receiving the configuration that send the base station or activating the signaling of new Serving cell, carry out, also can after the signaling of receiving the new Serving cell of activation that send the base station, carry out.
804, UE uses selected descending reference Serving cell, send Preamble after; Receive the up transmitting time adjustment order that send the base station; And on the time basis that sends Preamble, adjust transmitting time forward or backward, send the upstream data of back according to the adjustment order of base station.
The king-sized area of descending carrier time delay at the part Serving cell; Such as RRU region covered edge; And the Optical Fiber Transmission between RRU and baseband module distance is when long, and at this moment, the descending carrier signal of Serving cell reaches RRU from baseband module through optical fiber; Be transferred to UE from RRU again, the downlink transfer time delay of process is bigger.Through embodiments of the invention, can use a time deviation to compensate, can increase the probability that the base station correctly receives Preamble, improved the probability of success that UE inserts at random.
Correspondingly, the embodiment of the invention also provides accidental access method: UE under the another kind of multicarrier scene to select reference cell according to the indication of base station, initiates to insert at random; If failure; Initiate once more to insert at random, simultaneously the frequency of failure (or the frequency of failure of sending preamble) that inserts is at random added up, if after the transmission Preamble frequency of failure reaches certain threshold value; UE adjusts the time of certain unit forward or backward; Send Preamble once more, after wherein sending the threshold value of the Preamble frequency of failure and reach threshold value by base station configuration, the time that UE adjusts forward or backward.
Wherein, failure maximum times threshold value also can be arranged by agreement.
May further comprise the steps at this embodiment:
901, UE receives being used to that the base station sends and indicates said base station to dispose or activate the signaling of new Serving cell for this UE.
Step 902a, UE receive the indication that is used for of base station transmission:
The maximum times of the access failure at random threshold value of said base station configuration (or frequency of failure maximum threshold of transmission preamble); With
After access failure number of times (or the frequency of failure of sending preamble) reaches threshold value at random, adjust the adjustment step-length of up transmitting time.
Step 902b, UE receive the indication that is used for of base station transmission:
The maximum times of the access failure at random threshold value of said base station configuration (or frequency of failure maximum threshold of transmission preamble); With
After access failure number of times (or the frequency of failure of sending preamble) reaches threshold value at random, adjust the adjustment step-length of up transmitting time; With
After access failure number of times (or the frequency of failure of sending preamble) reaches threshold value at random, adjust up transmitting time forward or backward.
Wherein, 902a and 902b are two steps arranged side by side.
Wherein the parameter among step 902a and the 902B can be that a plurality of UE are shared, also can be different to each UE, also can two kinds of configuration coexistences (if the specific configuration of UE is arranged, just use; Otherwise use public configuration).
Above-mentioned " access failure maximum times threshold value at random ", after the access failure number of times reaches threshold value at random; Forward/and the up transmitting time of back adjustment, the access failure number of times adjustment step-length that reaches the up transmitting time of adjustment after the threshold value can receive through configuration or the signaling that activates new Serving cell at random, also can receive through the signaling that activates new Serving cell.
In the above-mentioned configuration information, " the access failure number of times is adjusted up transmitting time forward/afterwards after reaching threshold value at random " this parameter also can be removed, be defaulted as and adjust up transmitting time forward.
903; If indication UE initiates random access procedure in the said signaling, be used to obtain up transmitting time lead, the descending carrier of the selected Serving cell of UE is as the reference of sending Preamble; Initiate to insert at random; If failure is initiated to insert at random once more, simultaneously the frequency of failure (or the frequency of failure of sending preamble) that inserts is at random added up.
" descending carrier of selecting a Serving cell is as the reference of sending Preamble " described in this step; Can be by descending reference Serving cell of the explicit indication in base station; Also can implicit expression select the minimum Serving cell of a downlink transfer time delay as the descending reference Serving cell voluntarily by UE; Also can use the mode shown in the embodiment shown in Figure 7, UE selects a Serving cell as the descending reference Serving cell within the descending carrier of several Serving cells voluntarily.
904, if after the frequency of failure that inserts at random (or the frequency of failure of sending preamble) reaches predetermined threshold, forward or backward the time of unit of adjustment's step-length, send Preamble once more, proceed frequency of failure statistics simultaneously.
905, UE uses selected descending reference Serving cell, send Preamble after; Receive the up transmitting time adjustment order that send the base station; And on the time basis that sends Preamble, adjust transmitting time forward or backward, send the upstream data of back according to the adjustment order of base station.
Cross the embodiment of the invention; UE adjusts up transmitting time voluntarily; Can increase the probability that the base station correctly receives Preamble, avoid UE to use for many times wrong Timing Advance to send Preamble, alleviate the load of access at random of whole sub-district; Reduce interference, improve the success rate that inserts at random other UE.
One of ordinary skill in the art will appreciate that all or part of step that realizes in the foregoing description method is to instruct relevant hardware to accomplish through program; Described program can be stored in the computer read/write memory medium; Described storage medium, as: ROM/RAM, magnetic disc, CD etc.
Need to prove that each embodiment in this specification all adopts the mode of going forward one by one to describe, identical similar part is mutually referring to getting final product between each embodiment, and each embodiment stresses all is the difference with other embodiment.Especially, for apparatus embodiments, because it is basically similar in appearance to method embodiment, so describe fairly simplely, relevant part gets final product referring to the part explanation of method embodiment.
In addition; Apparatus embodiments described above only is schematic; Wherein said unit as the separating component explanation can or can not be physically to separate also; The parts that show as the unit can be or can not be physical locations also, promptly can be positioned at a place, perhaps also can be distributed on a plurality of NEs.Can realize the purpose of present embodiment scheme according to the needs selection some or all of module wherein of reality.Those of ordinary skills promptly can understand and implement under the situation of not paying creative work.
More than the embodiment of the invention has been carried out detailed introduction, used embodiment among this paper the present invention set forth, the explanation of above embodiment just is used for help understanding method and apparatus of the present invention; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that on embodiment and range of application, all can change, in sum, this description should not be construed as limitation of the present invention.
Claims (24)
1. accidental access method under the multicarrier scene is characterized in that, comprising:
What user terminal UE received the base station transmission is said UE configuration or the signaling that activates new Serving cell;
If comprise the reference cell indication in the said signaling; It is reference cell that said reference cell indication is used to indicate the descending carrier of at least one Serving cell; Then said UE as the time reference that sends the uplink random access code, initiates random access procedure with said reference cell on said new Serving cell.
2. method according to claim 1; It is characterized in that; If comprise the reference cell indication in the said signaling; It is reference cell that said reference cell indication is used to indicate the descending carrier of at least one Serving cell, and said UE comprises said Reference Services as the time reference that sends the uplink random access code:
Comprise the reference cell indication in the said signaling, it is reference cell that said reference cell indication is used to indicate the descending carrier of at least one Serving cell except that the basic service sub-district;
Said UE will be except that the basic service sub-district descending carrier of at least one Serving cell as the time reference that sends the uplink random access code.
3. method according to claim 1; It is characterized in that; If comprise the reference cell indication in the said signaling; It is reference cell that said reference cell indication is used to indicate the descending carrier of at least one Serving cell, and said UE comprises said Reference Services as the time reference that sends the uplink random access code:
If comprise the reference cell indication in the said signaling, it is reference cell that said reference cell indication is used to indicate the descending carrier of at least one Serving cell except that new Serving cell;
Said UE will except that the descending carrier of at least one Serving cell the new Serving cell as the time reference that sends the uplink random access code.
4. method according to claim 1 is characterized in that, said method also comprises:
If comprise reference cell indication in the said signaling, said UE obtains the downlink carrier information of at least one Serving cell, with the descending carrier of at least one Serving cell that obtains Serving cell as a reference;
Said UE as the time reference that sends the uplink random access code, initiates random access procedure with said reference cell on said new Serving cell.
5. method according to claim 4; It is characterized in that; Said UE obtains the downlink carrier information of at least one Serving cell; With the descending carrier of at least one Serving cell that obtains Serving cell as a reference, said UE comprises said reference cell as the time reference that sends the uplink random access code:
Said UE obtains the downlink carrier information of basic service sub-district, with the descending carrier of the basic service sub-district that obtains Serving cell as a reference, said UE with the descending carrier of said basic service sub-district as the time reference that sends the uplink random access code;
Perhaps
Said UE obtains the downlink carrier information of new Serving cell; With the descending carrier of at least one the new Serving cell that obtains Serving cell as a reference, said UE with the descending carrier of said at least one new Serving cell as the time reference that sends the uplink random access code.
6. according to claim 1 or the described method of 4 claims, it is characterized in that said method also comprises:
If comprise the information of the original Serving cell of UE in the said signaling; And indication UE uses the up transmitting time lead of original Serving cell, and said UE uses the up transmitting time lead of said original Serving cell on said new Serving cell, to send upstream data and signaling.
7. accidental access method under the multicarrier scene is characterized in that, comprising:
When the base station is that a connected state user terminal UE is when increasing new Serving cell; If said base station confirm as new Serving cell that said UE increases can not with the shared up transmitting time lead of the original any Serving cell of said UE; Said base station confirms that the descending carrier of Serving cell is a reference cell, said reference cell is sent the time reference of uplink random access code as said UE;
Said base station is sent as the signaling that said UE disposed or activated new Serving cell to said UE; Comprise the reference cell indication in the said signaling; It is reference cell with the descending carrier of at least one Serving cell that said reference cell indication is used to indicate UE; So that said UE initiates random access procedure with the time reference of said reference cell as transmission uplink random access code on said new Serving cell.
8. method according to claim 7 is characterized in that,
Said base station confirms that the descending carrier of Serving cell is a reference cell, and said reference cell is comprised as the time reference that said UE sends the uplink random access code:
Said base station confirms that the descending carrier of at least one other Serving cell except that the basic service sub-district is a reference cell, the descending carrier of said at least one other Serving cell except that the basic service sub-district is sent the time reference of uplink random access code as UE;
Said base station is sent as the signaling that said UE disposed or activated new Serving cell to said UE, comprises the reference cell indication in the said signaling and comprises:
Said base station is sent as the signaling that said UE disposed or activated new Serving cell to said UE, in said signaling, comprises the indication of the descending carrier of at least one other Serving cell except that the basic service sub-district.
9. method according to claim 7 is characterized in that,
Said base station confirms that the descending carrier of Serving cell is a reference cell, and said reference cell is comprised as the time reference that said UE sends the uplink random access code:
Said base station confirms that the descending carrier of at least one following other Serving cell except that new Serving cell is a reference cell, the descending carrier of said at least one Serving cell except that new Serving cell is sent the time reference of uplink random access code as said UE;
Said base station is sent as the signaling that said UE disposed or activated new Serving cell to said UE, comprises the reference cell indication in the said signaling and comprises:
Said base station is sent as the signaling that said UE disposed or activated new Serving cell to said UE, in said signaling, comprises the descending carrier indication of at least one Serving cell except that the basic service sub-district.
10. method according to claim 7 is characterized in that, said base station confirms that the descending carrier of Serving cell is that reference cell comprises:
The base station is according at least one descending carrier of confirming as said UE time reference in the position of the position of repeater, the logical scope of band of repeater, the effective radius of repeater, the propagation delay time of repeater, the processing delay of repeater, new Serving cell place frequency range and UE.
11. method according to claim 7 is characterized in that, said method also comprises:
If said new Serving cell can with the shared up transmitting time lead of original Serving cell of said UE, then in said signaling, comprise the sign of said original Serving cell.
12. accidental access device under the multicarrier scene is characterized in that, comprising:
Transmission unit is used to receive that the base station sends for said UE configuration or activate the signaling of new Serving cell;
First confirms the unit; Be used for if the said signaling that said transmission unit receives comprises the reference cell indication; It is reference cell that said reference cell indication is used to indicate the descending carrier of at least one Serving cell, with the time reference of said reference cell as transmission uplink random access code;
First trigger element is used for the time reference according to the definite transmission uplink random access code in said first definite unit, on said new Serving cell, initiates random access procedure.
13. device according to claim 12 is characterized in that,
Said first confirms the unit; Specifically be used for said signaling and comprise the reference cell indication; It is reference cell that the indication of said reference cell is used to indicate the descending carrier of at least one Serving cell except that the basic service sub-district, will be except that the basic service sub-district the descending carrier of at least one Serving cell as the time reference of transmission uplink random access code; Perhaps
Said first confirms the unit; Specifically be used for said signaling and comprise the reference cell indication; It is reference cell that the indication of said reference cell is used to indicate the descending carrier of at least one Serving cell except that new Serving cell, will be except that the descending carrier of at least one Serving cell the new Serving cell time reference as transmission uplink random access code.
14. device according to claim 12 is characterized in that, said device also comprises:
Acquiring unit does not comprise reference cell indication if be used for said signaling, obtains the downlink carrier information of at least one Serving cell, with the descending carrier of at least one Serving cell that obtains Serving cell as a reference;
Second confirms the unit, and the reference cell that is used for said acquiring unit is obtained is as the time reference that sends the uplink random access code;
Second trigger element is used on said new Serving cell, initiating random access procedure according to the definite said time reference in said second definite unit.
15. device according to claim 14 is characterized in that,
Said acquiring unit specifically is used to obtain the descending service cell information of basic service sub-district;
Said second confirms the unit, and the descending carrier of the basic service sub-district that specifically is used for said acquiring unit is obtained is Serving cell as a reference, with the descending carrier of said basic service sub-district as the time reference that sends the uplink random access code; Perhaps
Said acquiring unit specifically is used to obtain the descending service cell information of new Serving cell;
Said second confirms the unit, and the descending carrier of at least one the new Serving cell that specifically is used for said acquiring unit is obtained is Serving cell as a reference, with said at least one new Serving cell as the time reference that sends the uplink random access code.
16. according to claim 14 or the described device of 15 claims, it is characterized in that,
Said transmission unit also is used for using the up transmitting time lead of said original Serving cell on said new Serving cell, to send upstream data and signaling if the said signaling that said transmission unit receives comprises the information of original Serving cell.
17., it is characterized in that accidental access device is a subscriber equipment under the said multicarrier scene according to the described device of the arbitrary claim of claim 1 to 14.
18. accidental access device under the multicarrier scene is characterized in that, comprising:
Confirm the unit; Be used for when the user terminal UE for a connected state increases new Serving cell; If be the new Serving cell that increases of said UE can not with the shared up transmitting time lead of the original any Serving cell of said UE; The descending carrier of confirming Serving cell is a reference cell, said reference cell is sent the time reference of uplink random access code as said UE;
Processing unit is used for adding the reference cell information that said definite unit is confirmed in the signaling that disposes or activate new Serving cell for said UE;
Transmitting element; Be used for being sent as the signaling that said UE disposed or activated new Serving cell to said UE; Comprise the said reference cell information that said processing unit adds in the said signaling; So that said UE initiates random access procedure with the time reference of said reference cell as transmission uplink random access code on said new Serving cell.
19. device according to claim 18 is characterized in that,
Said definite unit; Be used for specifically confirming that the descending carrier of at least one other Serving cell except that the basic service sub-district is a reference cell, other Serving cell descending carriers of said at least one except that the basic service sub-district sent the time reference of uplink random access code as UE;
Said processing unit specifically is used for adding in said signaling the descending carrier indication of at least one other Serving cell except that the basic service sub-district;
Perhaps
Said definite unit; Be used for specifically confirming that the descending carrier of at least one other Serving cell is a reference cell except that new Serving cell, the descending carrier of said at least one other Serving cell except that new Serving cell sent the time reference of uplink random access code as said UE;
Said processing unit specifically is used for adding in said signaling the descending carrier indication of at least one other Serving cell except that new Serving cell.
20. device according to claim 18, base be characterised in that,
Said transmitting element; Also be used for being sent as the signaling that said UE disposed or activated new Serving cell to said UE; In said signaling, do not add the information of said descending Serving cell; So that said UE obtains descending service cell information, the said descending Serving cell that obtains as the time reference that sends the uplink random access code, is initiated random access procedure on said new Serving cell.
21. device according to claim 18 is characterized in that,
Said definite unit is used for specifically confirming that the descending Serving cell as said UE time reference is the descending Serving cell of basic service sub-district;
Said processing unit specifically is used for not adding in said signaling the descending service cell information of the said basic service sub-district of confirming said definite unit; Perhaps
Said definite unit is used for specifically confirming that the descending Serving cell as said UE time reference is the descending Serving cell of new Serving cell;
Said processing unit specifically is used for not adding in said signaling the descending service cell information of the said new Serving cell of confirming said definite unit.
22. according to the described device of the arbitrary claim of claim 18 to 21, it is characterized in that,
Said definite unit, specifically be used for the logical scope of band of position, repeater, the effective radius of repeater, the propagation delay time of repeater, the processing delay of repeater, new Serving cell place frequency range and UE according to the repeater the position at least one confirm descending Serving cell as said UE time reference.
23. according to the described device of the arbitrary claim of claim 18 to 21, it is characterized in that,
Said processing unit if also be used for the shared up transmitting time lead of original Serving cell of said new Serving cell and said UE, then adds the sign of said original Serving cell in said signaling.
24., it is characterized in that accidental access device is the base station under the said multicarrier scene according to the described device of the arbitrary claim of claim 18 to 21.
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| WO2014153928A1 (en) * | 2013-03-26 | 2014-10-02 | 中兴通讯股份有限公司 | Method for setting sending time of carrier, and communication system |
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| CN109803436A (en) * | 2017-11-17 | 2019-05-24 | 华为技术有限公司 | A kind of accidental access method and device |
| CN110073711A (en) * | 2017-01-05 | 2019-07-30 | Oppo广东移动通信有限公司 | Method and apparatus for random access |
| WO2020007296A1 (en) * | 2018-07-02 | 2020-01-09 | 中国移动通信有限公司研究院 | Random access status transmission method, random access status receiving method, user terminal, and network side device |
| CN112804764A (en) * | 2017-06-23 | 2021-05-14 | 高通股份有限公司 | Techniques and apparatus for supplementing uplink random access configuration |
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| CN109803436A (en) * | 2017-11-17 | 2019-05-24 | 华为技术有限公司 | A kind of accidental access method and device |
| WO2020007296A1 (en) * | 2018-07-02 | 2020-01-09 | 中国移动通信有限公司研究院 | Random access status transmission method, random access status receiving method, user terminal, and network side device |
| CN114040474A (en) * | 2021-11-30 | 2022-02-11 | 新华三技术有限公司成都分公司 | Terminal access method, device and equipment |
| CN114040474B (en) * | 2021-11-30 | 2023-09-26 | 新华三技术有限公司成都分公司 | Terminal access method, device and equipment |
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