CN101990257B - Method for acquiring system messages of adjacent cell in wireless network system - Google Patents
Method for acquiring system messages of adjacent cell in wireless network system Download PDFInfo
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Abstract
The invention provides a method for acquiring system messages of an adjacent cell in a wireless network system, which comprises the following steps of: sending time information to a serving cell by UE (User Equipment); receiving system messages of an adjacent cell by UE according to the time information or combination of the time information and scheduled policies; or receiving system messages of an adjacent cell by UE according to the time configured in the serving cell to receive system messages of an adjacent cell. By using the method, good mobility of the UE between a macro cell and a femtocell or between femtocells can be ensured, and effect of reading MIB (Master Information Block) and/ or SIB1 (System Information Block 1) of femtocells on the current services of the UE can be reduced.
Description
Technical field
The present invention relates to moving communicating field, in particular to the processing method that a kind of adjacent domain system message reads.
Background technology
In the construction of Radio Network System, in-door covering has become the most important thing of networking, rational in-door covering scheme can make network system farthest play its effect on the one hand, for operator creates larger value, also greatly can save the networking cost of operator on the other hand, really realize low input high repayment.Thus, the radio reception device that one is called Home eNodeB (Home eNodeB, HeNB) arises at the historic moment.Home eNodeB is deployed in the private site uses such as family, group, company or school as the dedicated resources of private user, various High-speed wireless access service can be provided to user and to provide on rate preferential, make up existing distributed cellular radio communication system simultaneously and cover not enough defect.
It is the reserved frequency resource of Home eNodeB that Home eNodeB can use operator specially, also the frequency resource identical with macro base station can be used, community under macro base station (eNB) covers is called macrocell, and the community under Home eNodeB covers is called home base station cells.Current Home eNodeB has three kinds of access modules: open mode, closed mode and mixed mode, and wherein, the Home eNodeB of open mode allows all user's accesses, and corresponding community is called the home base station cells (open cell) of open mode, the Home eNodeB of closed mode only allows the user's access through authorizing, as the kinsfolk authorized, the users such as member of community, these constitute a closed user group (CSG through the user's (being called for short Member Users) authorized, ClosedSubscriber Group), identify with CSG ID (CSG Identity), user allows each closed user group mark accessed, be stored in subscriber equipment (User Equipment, referred to as UE) in, community under the Home eNodeB covering of closed mode is called the home base station cells of closed mode, be called for short CSG cell, the Home eNodeB of mixed mode also has a closed user group, the Home eNodeB of mixed mode is except allowing Member Users and accessing, also allow non-member user access, but Member Users enjoys the preferential guarantee power of service quality, priority allocation power in resource and the preferential right on rate, corresponding community is called the home base station cells (hybrid cell) of mixed mode.
CSG cell only allows Member Users to access, for travelling performance excellent under meeting connected state, UE needs initially to access judgement (Preliminary AccessCheck) to CSG cell, namely UE needs System information block 1 (the SystemInformation Block1 reading CSG cell, SIB1), allow each CSG ID accessed according to the user preserved in CSG ID and UE broadcasted in SIB1, judge whether UE allows to access this CSG cell.In addition home base station cells has a Physical Cell Identifier (Physical CellIdentity, PCI) and one global cell identity (Cell Global Identifier, CGI), the limited amount (504) of PCI, along with a large amount of deployment of Home eNodeB, unavoidably must there will be the situation that two or more home base station cells uses identical PCI, and CGI is unique in public land mobile network (Public Land Mobile Network, PLMN) scope.UE directly can obtain the PCI of home base station cells in Cell searching/measuring process, and CGI just can must obtain by reading SIB1.Macrocell is resided in so that UE is current, if there is two or more home base station cells to use identical PCI, target household base station cell cannot be uniquely determined after macrocell receives the PCI of the home base station cells that UE reports, for solving the problem, UE is needed to read the SIB1 of target household base station cell, obtain CGI and reported macrocell, thus uniquely determining target household base station cell.
LTE system has the frame structure (Type1 and Type2) of two types, Type 1 frame structure is applied to mode of frequency division duplexing (Frequency division duplex, FDD), Type 2 frame structure is applied to TDD mode (Time division duplex, TDD), respectively as depicted in figs. 1 and 2.In the frame structure of FDD, the radio frames of a 10ms has been divided into the word frame composition of 10 1ms, and each subframe is made up of the time slot of two 0.5ms; In tdd frame structure, the radio frames of a 10ms is divided into the field of two 5ms, and except special subframe, other subframe is all made up of the time slot of two 0.5ms.Special subframe in Type 2 is by DwPTS (Downlink Pilot Time Slot; descending pilot frequency time slot), GP (Guard Period; protection interval) and UpPTS (Uplink Pilot Time Slot; uplink pilot time slot) these 3 special time slot compositions; the length of these 3 time slots can be joined, but the overall length of these 3 time slots is fixed as 1ms.
According to Long Term Evolution (Long-Term Evolution, LTE) the system message scheduling mechanism of system, before reading SIB1, first UE must read host system message block (MainInformation Block, MIB), as shown in Figure 3, wherein MIB has the fixing transmission cycle of 40 milliseconds, and repeats in the #0 subframe of each radio frames of MIB within the transmission cycle to send.SIB1 has the fixing dispatching cycle of 80 milliseconds, SIB1 meets System Frame Number (System Frame Number is called for short SFN) within dispatching cycle to be undertaken repeating to send by the #5 subframe (subframe numbering is from 0) that 2 divide exactly the radio frames of (SFN%2=0).Therefore after introducing home base station cells, UE under connected state must be solved and how efficiently to read the problem of MIB and SIB1, while guaranteeing meeting UE travelling performance good between macrocell and home base station cells or between home base station cells and home base station cells, the impact on UE current business that MIB and SIB1 as far as possible reducing reading home base station cells causes.
At present, in LTE system, in order to meet the good alien frequencies of UE, different System Mobility energy, ensure normally carrying out of UE current business simultaneously, network side can be UE allocating and measuring gap (GAP), measurement clearance is that UE provides the time of carrying out alien frequencies, isosystem measurement specially, in measurement clearance, UE does not send any data, UE be tuned to alien frequencies, isosystem measurement object place frequency on measure, network also can be avoided when dispatching sending data to UE in measurement clearance, thus avoids the loss of data in measurement clearance.In existing system, GAP has two kinds of patterns, pattern 0 and pattern 1, and the cycle is respectively 40ms and 80ms, and GAP length (GAP length) is 6ms, and the time started of GAP length can be any one subframe in one-period.
If MIB and SIB1 reading home base station cells adopts existing GAP mechanism, because network side has no way of knowing the definite transmission position of target household base station cell MIB and SIB1, therefore network side cannot ensure that configured GAP just in time can comprise the transmission position of target household base station cell MIB or SIB1, when the GAP that network side configures can not comprise the transmission position of target household base station cell MIB or SIB1, UE cannot read MIB and SIB1 of target household base station cell, as shown in Figure 4, the GAP cycle is 40ms, the 6ms GAP length that network side configures does not comprise the transmission position of target household base station cell MIB or SIB1, no matter experience how many GAP cycles, UE cannot read MIB and SIB1 of target household base station cell, in addition, existing GAP needs the explicit configuration of network side and deletion, when home base station cells is disposed in a large number, and the obvious underaction of this mechanism, and can the serious load increasing space interface signaling.Existing GAP length is fixing 6ms on the other hand, and the actual transmitting time of MIB, SIB1 all only has 1ms, so adopt existing GAP to read MIB relatively also have more resource reservation, causes the transfer of data of this community to have larger interruption.
Therefore the invention provides a kind of adjacent domain system message acquisition methods, make use of MIB, SIB1 receives situation about relatively determining opportunity, after adopting method of the present invention, UE can get the system message of home base station cells in time efficiently, thus ensure the travelling performance that UE is good between macrocell and home base station cells or between home base station cells and home base station cells, the impact on UE current business that MIB and SIB1 simultaneously reducing reading home base station cells causes.The present invention can be used in equally and obtain other reception relative established data on opportunity.
Summary of the invention
Technical problem to be solved by this invention is the system message enabling subscriber equipment immediately obtain adjacent cell.For solving the problems of the technologies described above, the present invention proposes a kind of method obtaining the system message of adjacent cell in Radio Network System, comprising the following steps: subscriber equipment is to Serving cell transmission time information; Subscriber equipment is according to temporal information or the system message receiving adjacent cell according to the combination of temporal information and predetermined policy; Or the adjacent domain system message that subscriber equipment configures according to Serving cell receives the system message receiving adjacent cell opportunity.
Wherein, temporal information is the information on the opportunity that sends about adjacent domain system message that subscriber equipment gets.
Wherein, predetermined policy is the configuration guidelines that the predefined adjacent domain system message of subscriber equipment and network side receives opportunity.
Wherein, the temporal information configuration adjacent domain system message that Serving cell sends according to subscriber equipment receives opportunity, or, the temporal information that Serving cell sends according to subscriber equipment or know that subscriber equipment receives the opportunity of adjacent domain system message according to the combination of temporal information and predetermined policy.
Wherein, temporal information refers to, at least one in the time differential information between Serving cell and adjacent cell and the schedule information of adjacent domain system message, and schedule information refers to, at least one in cycle and deviation information.
Wherein, time differential information refers to, frame border time between Serving cell and adjacent cell is poor, at least one in frame information and parity frame boundary time difference, wherein, frame information refers to, at least one in the System Frame Number of Serving cell of the reception gap that the parity frame difference between Serving cell and adjacent cell, the System Frame Number deviation between Serving cell and adjacent cell and subscriber equipment will start.
Wherein, system message refers to the host system message block MIB in LTE system and at least one in System information block 1SIB1.
Wherein, subscriber equipment is poor to the frame border time between transmission Serving cell, Serving cell and adjacent cell; Determine the reception opportunity of the host system message block of adjacent cell according to the frame border time difference between Serving cell and adjacent cell or according to the combination of frame border time difference and predetermined policy and receive host system message block; Subscriber equipment to the frame information between transmission Serving cell, Serving cell and adjacent cell or parity frame boundary time poor; According to the frame border time difference between Serving cell and adjacent cell and frame information, or it is poor according to the parity frame boundary time between Serving cell and adjacent cell, or poor according to frame border time and frame information and predetermined policy combination, or according to parity frame boundary time difference and the combination of predetermined policy, determine reception opportunity of the System information block 1 of adjacent cell and receiving system message blocks 1.
Wherein, described according to the frame border time difference between Serving cell and adjacent cell or determine reception opportunity of the host system message block of adjacent cell according to frame border time difference and the combination of predetermined policy and the step receiving host system message block comprises: the reception opportunity of host system message block is determined according to frame border time difference in Serving cell; Subscriber equipment receives host system message block in the reception of host system message block opportunity.
Wherein, described according to the frame border time difference between Serving cell and adjacent cell or determine reception opportunity of the host system message block of adjacent cell according to frame border time difference and the combination of predetermined policy and the step receiving host system message block comprises: Serving cell sends to subscriber equipment and confirms to indicate; Subscriber equipment is according to 1) receive the confirmation the temporal information of instruction, 2) frame border time is poor, and 3) receive host system message block by the predetermined policy on Serving cell and subscriber equipment predefined reception opportunity determining host system message block.
Wherein, predetermined policy comprise following at least one: the cycle on reception opportunity of host system message block, length, original position, durations.
Wherein, according to the frame border time difference between Serving cell and adjacent cell and frame information, or it is poor according to the parity frame boundary time between Serving cell and adjacent cell, or poor according to frame border time and frame information and predetermined policy combination, or according to parity frame boundary time difference and the combination of predetermined policy, determine the reception opportunity of the System information block 1 of adjacent cell and the step of receiving system message blocks 1 comprises: Serving cell sends to subscriber equipment and confirms instruction; Subscriber equipment is according to 1) receive the confirmation the temporal information of instruction, 2) frame information or parity frame boundary time poor, and/or 3) by the predetermined policy receiving system message blocks 1 on reception opportunity of Serving cell and the predefined certainty annuity message blocks 1 of subscriber equipment.
Wherein, subscriber equipment by following to Serving cell transmission time information: physical layer signaling; The control unit MAC CE of medium education; Or radio resource control signaling.
Wherein, subscriber equipment also sends Physical Cell Identifier PCI and the frequency information of adjacent cell to Serving cell.
Wherein, system message refers to the host system message block MIB in UMTS system and at least one in System information block 3SIB3, System information block 4SIB4.
After the present invention program is applied to the system message obtaining home base station cells, UE can get system message (MIB and/or SIB1 of such as home base station cells) in time efficiently, thus ensure the travelling performance that UE is good between macrocell and home base station cells or between home base station cells and home base station cells, the impact on UE current business that MIB and/or SIB1 simultaneously reducing reading home base station cells causes.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form limitation of the invention.In the accompanying drawings:
Fig. 1 is the frame structure schematic diagram of FDD in LTE system;
Fig. 2 is the frame structure schematic diagram of TDD in LTE system;
Fig. 3 is the scheduling schematic diagram of MIB and SIB1 in LTE system;
Fig. 4 is the GAP configuration schematic diagram that existing GAP cannot get target household base station cell MIB and SIB1 in LTE system;
Fig. 5 is the configuration example figure that embodiment one MIB receives gap;
Fig. 6 embodiment one MIB receives the process chart in gap;
Fig. 7 is the configuration example figure that embodiment two MIB receives gap;
Fig. 8 embodiment two MIB receives the process chart in gap;
Fig. 9 is the configuration schematic diagram that SIB1 receives gap;
Figure 10 is another reception gap configuration schematic diagram of SIB1;
Figure 11 is the process chart that embodiment Three S's IB1 receives gap;
Figure 12 is the process chart that embodiment four SIB1 receives gap;
Figure 13 is the flow chart that UE reads home base station cells MIB and SIB1.
Embodiment
Below in conjunction with accompanying drawing to being described.
In LTE system, each community all can send two kinds of synchronizing signals (Synchronization signal) in the fixed position of each radio frames (Radio Frame), master sync signal (Primary synchronization signal, and auxiliary synchronous signals (Secondarysynchronization signal) PSS), UE can pass through PSS in Cell searching/measuring process, SSS gets the frame time information (Frame timing) of each community, further, when UE searches for/measures an adjacent cell, UE can by the temporal information of Serving cell, and the temporal information of the adjacent cell got, (concrete account form can be frame border time difference between acquisition Serving cell and adjacent cell, m-adjacent cell time during Serving cell, or m-Serving cell time during adjacent cell, all for the former in embodiment), this frame border time difference scope is (can equal 0ms between 0ms-10ms, but can not 10ms be equaled).Therefore the present invention is when reading the MIB of adjacent cell, the frame border time that UE and eNB make use of between Serving cell and adjacent cell is poor, namely network side is that UE reasonably configures the reception gap (GAP reading adjacent cell MIB according to above-mentioned frame border time difference, or claim reception opportunity), or network and UE determine the reception opportunity (or claiming to receive gap) of adjacent cell MIB according to above-mentioned frame border time difference, UE receives/reads MIB within this reception opportunity, and network then avoids scheduling to UE or transfer of data within this reception opportunity as far as possible.In addition, in LTE system, any during MIB sends at four times of the 40ms cycle once sends, all there is self-demarking code function, as long as that is channel quality is enough good, UE can send in the #0 subframe of any one radio frames by receiving MIB, gets the information of MIB.
In LTE system, SIB1 only sends in the #5 subframe (subframe numbering is from 0) of the radio frames meeting SFN%2=0 in dispatching cycle, namely also SIB1 only sends in even frame, and any in the sending for four times of 80ms cycle of SIB1 once sends, and all has self-demarking code function.And in MIB, broadcast the SFN of community, UE can according to the SFN of the SFN of Serving cell and adjacent cell, obtain the SFN difference (parity frame difference or SFN deviation) of Serving cell and adjacent cell, therefore, the present invention is when reading the SIB1 of adjacent cell, UE and eNB make use of the SFN difference of SFN information that UE gets from adjacent cell MIB or Serving cell and adjacent cell, here SFN information is referred to as, namely network side is that UE reasonably configures the reception gap (GAP reading adjacent cell SIB1 according to above-mentioned SFN information, or claim reception opportunity), or network and UE are according to the reception opportunity (or claiming to receive gap) of above-mentioned SFN information determination adjacent cell SIB1, UE receives/reads SIB1 within this reception opportunity, network then avoids scheduling to UE or transfer of data within this reception opportunity as far as possible.
The present invention goes for obtaining other reception relative established data on opportunity equally, such as the reception of universal mobile telecommunications system (Universal Mobile Telecommunications System, UMTS) MIB.Be similar to LTE system, in the umts system, UE once Cell searching/measure an adjacent cell, the frame border time that UE just can obtain between Serving cell and adjacent cell is poor, and simultaneously because the transmission position of MIB is fixed in UMTS, UE and network can utilize above-mentioned frame border time difference to determine the reception opportunity (or claiming to receive gap) of adjacent cell MIB.UE gets MIB and/or SB (Scheduling block, Scheduling Block) after can know again adjacent cell other system message blocks (SIB, here mainly refer to SIB3 or SIB4) schedule information (comprise the transmission cycle of SIB, the information such as the transmitting time deviation of the segmentation of SIB), therefore UE and network can utilize the transmission opportunity of above-mentioned schedule information determination adjacent cell SIB.
The present invention program is described in detail below for LTE system.
embodiment one
In the present embodiment, UE reports the frame border time difference (Serving cell-adjacent cell) between Serving cell and adjacent cell to Serving cell, Serving cell is the reception gap of UE configuration reading adjacent cell MIB according to the frame border time difference that UE reports, or sends to UE the instruction that starts MIB reception gap.
UE is current is in connection status at macrocell, and UE judges to need to read the system message of adjacent cell, or the UE instruction that receives network side needs to read the system message of adjacent cell, as one family base station cell.As shown in Figure 5, suppose sub-frame boundary alignment between Serving cell and adjacent cell in the present embodiment, the frame border time difference between Serving cell and this adjacent cell is 4ms, and the present embodiment reads the method for MIB as shown in Figure 6, and idiographic flow is as follows:
Step 6-1:UE reports to Serving cell (or claiming to send), and the frame border time between Serving cell and adjacent cell is poor, as Fig. 5 examples cited 4ms.Concrete reporting schemes UE can multiplexing existing measurement report message, namely in measurement report, frame border time difference is increased, UE also can increase new physical layer signaling, such as PUCCH (Physical UplinkControl Channel, Physical Uplink Control Channel) signaling, or newly-increased MAC CE (Medium Access Control Control Element, the control unit of medium education), or newly-increased RRC (Radio Resource Control, wireless heterogeneous networks) signaling, in above-mentioned newly-increased PUCCH/MAC CE/RRC signaling except reporting the frame border time difference between Serving cell and this adjacent cell, also need the PCI and the frequency information that report this adjacent cell, Serving cell judges it is which community according to PCI and frequency information.
Step 6-2: the frame border time between the Serving cell that macrocell reports according to UE and this adjacent cell is poor, and the transmission time information of the MIB of adjacent cell, namely in LTE, MIB sends in the #0 subframe of each radio frames, for UE explicit configuration MIB receives gap, as Fig. 5 examples cited, the configuration GAP cycle is 10ms; GAP length (GAP length) (is considered if alien-frequency district may need extra receiver frequency switching time for 2ms, if do not consider receiver frequency switching time, also can be configured to 1ms, other embodiments herewith illustrate); The original position of GAP is the position that each radio frames neutron frame number equals #4; Optionally can also carry the durations of GAP, can be 2 GAP cycles in the present embodiment, can be also endless, until UE reads MIB.Or, after macrocell receives the frame border time difference between Serving cell and adjacent cell that UE reports, not explicit configuration MIB receives gap, because after the sequential of acquisition Target cell, UE and network, according to the transmission feature of MIB, can calculate the transmitting time of actual MIB, read GAP length can be predefined (namely, predetermined policy), can be such as co-frequency cell 1ms, alien-frequency district 2ms.Macrocell sends one by RRC signaling/MAC CE/ physical layer signaling to UE and starts the instruction that MIB receives gap, shows that UE can start to obtain the MIB of adjacent cell.
Step 6-3:UE receives according to the MIB of the explicit configuration of macrocell the MIB that GAP reads adjacent cell.Or UE starts the temporal information of Serving cell when MIB receives the instruction in gap according to receiving, frame border time difference between Serving cell and adjacent cell and network and the predefined MIB of UE receive gap configuration criterion, such as network and the UE agreement GAP cycle is 10ms, GAP length is 2ms, GAP durations is 2 GAP cycles, or is continued until that UE reads MIB position.GAP original position is the subframe position that UE receives that first sub-frame number after starting MIB reception gap instruction equals frame border time difference, starts GAP.In such as the present embodiment, as shown in Figure 5, UE receives and starts the subframe that MIB receives rear first #4 of instruction in gap, and Serving cell is because obtain frame border time difference, the configuration guidelines in gap is obtained according to network and the predefined MIB of UE, network side is also definite to be known in position as shown in Figure 5, UE can start MIB and receive gap, network can avoid the scheduling/transfer of data to UE in corresponding GAP length, thus while guaranteeing that configured MIB reception gap just in time comprises the transmission position of target adjacent section MIB, effectively avoid the loss of data.According to GAP durations before, 2 GAP cycles, namely after 20ms, GAP loss of configuration, the transfer of data of network recovery in GAP.Or GAP is continued until that UE gets MIB message, after waiting for UE informing network, terminate GAP.
embodiment two
With embodiment together, in the present embodiment, UE reports the frame border time between Serving cell and adjacent cell poor to Serving cell, the frame border time difference that Serving cell reports according to UE knows that UE reads the reception opportunity of this adjacent cell MIB, thus avoid the scheduling/transfer of data to UE in corresponding GAP length, while guaranteeing that UE can successfully obtain target adjacent section MIB, effectively avoid the loss of data.
In the present embodiment, the state of UE and frame border time difference between Serving cell and adjacent cell are with embodiment one, as shown in Figure 7.The present embodiment reads the method for MIB as shown in Figure 8, and idiographic flow is as follows:
Step 8-1: with embodiment one.
Step 8-2: macrocell sends the confirmation to message 8-1 to UE, this confirmation can be specifically RLC (the Radio Link Control to described 8-1 message, wireless link) confirmation of layer data bag, also can be HARQ (the Hybrid AutomaticRepeat Request to described 8-1 message, hybrid automatic repeat-request) confirmation (dotted line represents non-RRC information, lower with).
Step 8-3:UE is according to the temporal information of Serving cell during the confirmation received message 8-1, frame border time difference between Serving cell and adjacent cell and network and the predefined MIB of UE receive gap configuration criterion, the GAP cycle that such as network and UE arrange to configure is 20ms, GAP is 2ms (GAP1 length1)+2ms (GAP2 length2), interval 10ms between GAP1 and GAP2, GAP durations is 1 GAP cycle, or is continued until that UE reads the position of MIB.The original position of GAP is that UE receives the adjacent cell MIB calculated according to time differential information described before after to the confirmation of message 8--1 and receives and start to receive MIB opportunity, such as, UE receives the subframe position that first sub-frame number after to the confirmation of message 8--1 equals frame border time difference.UE starts GAP in the #4 subframe of SFN=1 in this example.And Serving cell is because obtain frame border time difference, according to the computational methods identical with UE, network side is also definite to be known in position as shown in Figure 7, UE can start MIB and receive gap, network can avoid the scheduling/transfer of data to UE in corresponding GAP length, thus while guaranteeing that configured MIB reception gap just in time comprises the transmission position of target adjacent section MIB, effectively avoid the loss of data.
It should be noted that, because UE and network have error correcting and detecting function and certain packet loss disposal ability, even to packet loss than more sensitive speech business, in certain limit, the data-bag lost of (exemplary value is 4 speech frames) also can not affect the business experience of user, therefore, in the present embodiment, after UE has reported the frame border time difference of Serving cell and adjacent cell, can not need to wait for that Serving cell is to the confirmation of this message, directly start at the time of reception of correspondence the data receiving adjacent cell, this example is the MIB of adjacent cell, before network receives the notification message of UE, network also can continue to send data to UE, these data may be lost, the packet lost carries out data re-transmission by prior art, such as by HARQ or ARQ (Automatic Repeat Request, HARQ) retransmission mechanism guarantee.
It should be noted that in addition, embodiment one and embodiment two lift sub-frame boundary alignment between Serving cell and adjacent cell, if sub-frame boundary does not line up, then the frame border time difference of Serving cell that UE calculates will not be integer number of milliseconds, such as 2.26ms.Now UE reports the frame border time difference of Serving cell can be directly 2.26ms, also can be the result after rounding up or down, as 2ms or 3ms, network side carries out MIB reception gap configuration or network and UE and does corresponding adjustment when arranging MIB reception gap configuration criterion, and Adjustment principle is the position that MIB reception gap must comprise target adjacent section MIB transmission.
It should be noted that further, MIB receives configuration or the configuration guidelines example in gap, except embodiment one and embodiment two examples cited, other configuration or configuration guidelines can also be had, the present invention just have selected preferred exemplary wherein, and patent SIB1 of the present invention obtains and receives the configuration in gap or configuration guidelines too, except patent examples cited of the present invention, can also have other configuration or configuration guidelines, the present invention just have selected preferred exemplary wherein.
embodiment three
In the present embodiment, UE has got the MIB of adjacent cell, UE reports UE to start SIB1 to Serving cell receives the SFN of gap in Serving cell, according to the SFN that UE reports, Serving cell knows that UE reads the reception opportunity of adjacent cell SIB1, thus avoid the scheduling/transfer of data to UE in corresponding GAP length, while guaranteeing that UE can successfully obtain target adjacent section SIB1, effectively avoid the loss of data.
The method that the present invention program reads SIB1 is illustrated below by way of two SIB1 configuration examples.
Example 1: as shown in Figure 9, suppose sub-frame boundary alignment between Serving cell and adjacent cell in this example, the frame border time difference between Serving cell and adjacent cell is 2ms; UE gets the MIB of adjacent cell in the radio frames of Serving cell SFN=0, indicates adjacent SFN=7 in MIB; Because scheduling delay, the propagation delay time of eating dishes without rice or wine, the factors such as the processing delay of macrocell, " SIB1 that UE will start receives the SFN in gap " is #9 subframe position at Serving cell SFN=0 also to suppose in the present embodiment that UE reports; Cell receiver is the #2 subframe at Serving cell SFN=1 to the SFN that UE reports; UE receives the #4 subframe be confirmed to be at Serving cell SFN=1 UE being reported to " SFN that the SIB1 that UE will start receives gap " message that Serving cell sends.
Example 2: as shown in Figure 10, suppose sub-frame boundary alignment between Serving cell and adjacent cell in this example, the frame border time difference between Serving cell and neighbour is 9ms; UE gets the MIB of adjacent cell in the radio frames of Serving cell SFN=0, indicates the SFN=8 of this home base station cells in MIB; Because scheduling delay, the propagation delay time of eating dishes without rice or wine, the factors such as the processing delay of macrocell, " SIB1 that UE will start receives the SFN in gap " is #8 subframe position at Serving cell SFN=1 also to suppose in the present embodiment that UE reports; Cell receiver is the #1 subframe at Serving cell SFN=2 to the SFN that UE reports; UE receives the #4 subframe be confirmed to be at Serving cell SFN=2 UE being reported to " SFN that the SIB1 that UE will start receives gap " message that Serving cell sends.
The present embodiment reads the method for SIB1 as shown in figure 11, and idiographic flow is as follows:
Step 11-1:UE reports to Serving cell " SIB1 that UE will start receives the SFN in gap ":
As shown in Figure 9, because UE gets the SFN=7 of adjacent cell in the radio frames of Serving cell SFN=0, be odd-numbered frame, then UE can receive SIB1 the earliest after 15ms, therefore the SFN=1 that reports of UE.
As shown in Figure 10, because UE gets the SFN=8 of adjacent cell in the radio frames of Serving cell SFN=0, for even frame, then UE can receive SIB1 the earliest after 5ms, but consider that between Serving cell and adjacent cell, the frame border time of 9ms is poor, scheduling delay, the propagation delay time of eating dishes without rice or wine, the factors such as the processing delay of macrocell, the therefore SFN=1 that reports of UE.
Comprehensive above example, the computational methods of " SIB1 that UE will start obtains the SFN received " that UE reports can be:
SFN＝SFN
serving+SFN
neighbour％2+FLOOR((Frame?difference+5)/10)
Wherein SFN
servingfor the SFN of Serving cell when UE reads adjacent cell MIB;
SFN
neighbourfor the SFN of the adjacent cell that UE gets from adjacent cell MIB;
Frame difference is that the frame border time between Serving cell and adjacent cell is poor;
FLOOR represents and rounds downwards;
% represents delivery.
The concrete reporting schemes of UE is with embodiment one.
Step 11-2: macrocell sends the confirmation to message 11-1 to UE, and this confirmation can be specifically the confirmation of the rlc layer packet to described 11-1 message, also can be the confirmation of the HARQ to described 11-1 message.
Step 11-3:UE receives gap configuration criterion according to network and the predefined SIB1 of UE, start SIB1 at " SIB1 that UE will start receives the SFN in the gap " place reported to Serving cell and receive gap, the GAP cycle that such as network and UE arrange to configure is 20ms, GAP length is 2ms, GAP durations is 2 GAP cycles, or being continued until that UE reads the position of SIB, GAP original position equals the subframe position of (Framedifference+5) %10 for " SIB1 that UE will start receives the SFN in gap " neutron frame number that UE reports.As shown in Figure 9, UE starts GAP in the #7 subframe of Serving cell SFN=1.
Or UE is according to the temporal information of Serving cell during the confirmation received message 11-1, " SIB1 that UE will start receives the SFN in gap ", and the MIB of network and UE agreement receives gap configuration criterion, the GAP cycle that such as network and UE arrange to configure is 20ms, GAP length is 3ms, GAP durations is 2 GAP cycles, or be continued until that UE reads MIB position.GAP original position receives the subframe position that first GAP cycle neutron frame number after to the confirmation of " SIB1 that UE will start receives the SFN in gap " message that it reports equals (Frame difference+5) %10 for UE.As shown in Figure 10, UE can start GAP in the #4 subframe of Serving cell SFN=1 originally, but because missed the #4 subframe (the #4 subframe at SFN=2) of SFN=1 during UE receives message 9-1 confirmation, therefore the GAP of UE postpones one-period start-up time, starts GAP in the #4 subframe of SFN=3.
It should be noted that, the SIB1 that will start that the present embodiment UE calculates receives the SFN of gap in Serving cell, just a preferred embodiment.UE can be poor according to the frame border time between Serving cell and adjacent cell, the SFN of the adjacent cell read, read the temporal information of Serving cell during adjacent cell MIB, and consider scheduling delay, the propagation delay time of eating dishes without rice or wine, the factors such as the processing delay of macrocell calculate " SIB1 that UE will start receives the SFN of gap in Serving cell " that report Serving cell.
embodiment four
In the present embodiment, UE has got the MIB of adjacent cell, UE reports the parity frame difference between Serving cell and adjacent cell (to be all odd-numbered frame/even frame between Serving cell and adjacent cell to Serving cell, or parity frame is contrary), or UE reports the SFN deviation (SFN of the SFN-adjacent cell of Serving cell between Serving cell and adjacent cell to Serving cell, or the SFN of the SFN-Serving cell of adjacent cell, be the SFN of the SFN-Serving cell of adjacent cell in this example), or read Serving cell during adjacent cell MIB radio frames and after reading MIB adjacent cell first even frame between frame border time difference (0-20ms, 0ms can be equaled, but can not 20ms be equaled), be called for short parity frame boundary time herein poor.Parity frame difference between the Serving cell that Serving cell reports according to UE and adjacent cell or the parity frame boundary time of SFN deviation or Serving cell and adjacent cell poor, know that UE reads the reception opportunity of adjacent cell SIB1, thus avoid the scheduling/transfer of data to UE in corresponding GAP length, while guaranteeing that UE can successfully obtain target adjacent section SIB1, effectively avoid the loss of data.
The present embodiment reads the method for SIB1 as shown in figure 12, and idiographic flow is as follows:
Step 12-1:UE reports to Serving cell " the parity frame difference of Serving cell and adjacent cell " or " the SFN deviation between Serving cell and adjacent cell " or " the parity frame boundary time of Serving cell and adjacent cell is poor ":
As shown in Figure 9, " the parity frame difference of Serving cell and adjacent cell " that UE reports is 1, and represent that between Serving cell and adjacent cell, just what a is odd-numbered frame, another is even frame; " the parity frame difference of Serving cell and adjacent cell " that UE reports is 7; " the parity frame boundary time of Serving cell and adjacent cell is poor " that UE reports is 12ms.
As shown in Figure 10, " the parity frame difference of Serving cell and adjacent cell " that UE reports is 0, represents that between Serving cell and adjacent cell be just in time odd-numbered frame simultaneously, or is even frame simultaneously; " the parity frame difference of Serving cell and adjacent cell " that UE reports is 8; " the parity frame boundary time of Serving cell and adjacent cell is poor " that UE reports is 9ms.
Concrete reporting schemes is with embodiment one.
Step 12-2-1: macrocell sends the confirmation to message 12-1 to UE, and this confirmation can be specifically the confirmation of the rlc layer packet to described 12-1 message, also can be the confirmation of the HARQ to described 12-1 message.
Step 12-2-2: macrocell sends one by RRC signaling/MAC CE to UE and starts the instruction (this message is optional) that SIB1 receives gap.
Step 12-3:UE is according to the temporal information of Serving cell during the confirmation received message 12-1, frame border time between Serving cell and adjacent cell is poor, and parity frame difference between Serving cell and adjacent cell or SFN deviation, or the parity frame boundary time of Serving cell and adjacent cell is poor, and network and the predefined SIB1 of UE receive gap criterion and calculate adjacent cell SIB1 and receive opportunity, start GAP.
As shown in Figure 9, parity frame between Serving cell from adjacent cell different (SFN deviation=7), frame border time difference between Serving cell and adjacent cell is 2ms, frame border time difference between Serving cell and adjacent cell is 12ms, the GAP cycle that network and UE arrange to configure is 20ms, GAP length is 2ms, GAP durations is 2 GAP cycles, or be continued until that UE reads the position of SIB1, GAP original position is, when UE receives the confirmation to " the parity frame difference of Serving cell and adjacent cell/SFN deviation " between Serving cell and adjacent cell message that it reports/after the radio frames neutron frame number of first relative adjacent cell even frame equal the subframe position of (Frame difference+5) %10.As shown in Figure 9, UE receives the subframe of first #7 after to the confirmation of message 12-1.
As shown in Figure 10, parity frame between Serving cell with adjacent cell identical (SFN deviation=8), frame border time difference between Serving cell and adjacent cell is 9ms, the GAP cycle that network and UE arrange to configure is 20ms, GAP length is 3ms, GAP durations is 2 GAP cycles, or be continued until that UE reads the position of SIB1, GAP original position is, when UE receives the confirmation to " the SFN deviation/Serving cell of the parity frame difference of Serving cell and adjacent cell/between Serving cell and adjacent cell and the parity frame boundary time of adjacent cell poor " message that it reports/after the radio frames neutron frame number of first relative family adjacent cell even frame equal the subframe position of (Frame difference+5) %10.As shown in Figure 10, UE receives the subframe of first #4 after to the confirmation of message 12-1.
Or, if Serving cell sends message 12-2-2 to UE, then UE is according to the temporal information of Serving cell when receiving message 12-2-2, frame border time between Serving cell and adjacent cell is poor, and parity frame difference between Serving cell and adjacent cell or SFN deviation, or the parity frame boundary time of Serving cell and adjacent cell is poor, and network and the predefined SIB1 of UE receive gap criterion and calculate adjacent cell SIB1 and receive opportunity, start GAP.
It should be noted that, because UE and network have error correcting and detecting function and certain packet loss disposal ability, even to packet loss than more sensitive speech business, in certain limit, the data-bag lost of (exemplary value is 4 speech frames) also can not affect the business experience of user, therefore, in the present embodiment, if network side does not send " start SIB1 and receive gap instruction ", after UE reports " the SFN deviation/Serving cell of the parity frame difference of Serving cell and adjacent cell/between Serving cell and adjacent cell and the parity frame boundary time of adjacent cell poor ", can not need to wait for that Serving cell is to the confirmation of this message, directly start at the time of reception in correspondence the data receiving adjacent cell, this example is the SIB1 of adjacent cell.Before network receives the notification message of UE, network also can continue to send data to UE, and these data may be lost, and the packet of loss carries out data re-transmission by prior art, such as, ensured by HARQ or ARQ retransmission mechanism.
It should be noted that in addition, frame border time difference in embodiment three and embodiment four between Serving cell and adjacent cell is that UE reported Serving cell before reading adjacent cell MIB, or, for the same situation frequently of adjacent cell and Serving cell, if UE just can read the MIB of adjacent cell when Cell searching/measurement, namely the MIB reading adjacent cell does not need GAP, then UE is in the flow process reading adjacent cell SIB1, except reporting " SIB1 that UE will start receives the SFN in gap " or " the parity frame difference of Serving cell and adjacent cell/SFN deviation " between Serving cell and adjacent cell, also need to report the frame border time between Serving cell and adjacent cell poor.If what UE reported is " the parity frame boundary time of Serving cell and adjacent cell is poor ", the frame border time contained between Serving cell and adjacent cell in this time difference information is poor.
In addition, concrete reporting schemes, report during to read SIB1 " Serving cell and adjacent cell parity frame difference ", UE can report " Serving cell and the adjacent cell parity frame difference " that needs when needing " frame border time between Serving cell and adjacent cell is the poor " that report when reading MIB and read SIB1 report with consolidation form, such as:
Report type (type) field and/or frame border time difference (0-10ms) field.
Wherein type field represents the parity frame difference between Serving cell and adjacent cell, and such as 0 represents that Serving cell and adjacent cell are all odd-numbered frame or even frame, and 1 represents that just in time parity frame is contrary in Serving cell.If read MIB, then do not need to report type field, if read SIB1, then must report type field and frame border time difference field.Whether Serving cell can report type field according to UE, judges that UE needs MIB or SIB1 read.
Report during to read SIB1 " the parity frame boundary time of Serving cell and adjacent cell is poor ", UE can need " the parity frame boundary time of Serving cell and adjacent cell is poor " reported to report with consolidation form " frame border time between Serving cell and adjacent cell is poor " that need when reading MIB to report and when reading SIB1, such as:
Report time slot (gap1) field of 4 bits or time slot (gap2) field of 5 bits.
Wherein gap1 is for representing the frame border time difference (0-10ms) between Serving cell and adjacent cell, and gap2 is for representing the parity frame boundary time difference (0-20ms) between Serving cell and adjacent cell.That Serving cell can report according to UE is gap1 or gap2, judges that UE needs MIB or SIB1 read.
embodiment five
The present embodiment one arrives embodiment four in conjunction with the embodiments, and describe the overall procedure that UE reads adjacent cell MIB and SIB1 in detail, idiographic flow is as follows:
Step 13-1MIB receives gap: UE and receives gap configuration criterion according to the frame border time difference between Serving cell and adjacent cell and network and the predefined MIB of UE and start MIB and receive gap; Or UE directly receives gap according to the MIB of Serving cell configuration and starts MIB reception gap.
For the same situation frequently of adjacent cell and Serving cell, UE also may not need MIB to receive gap, just can read the MIB of adjacent cell in Cell searching/measuring process.
Step 13-2UE reads MIB:UE and receives at MIB the MIB that adjacent cell is read in gap.
For the same situation frequently of adjacent cell and Serving cell, UE also directly may read the MIB of adjacent cell when Cell searching/measurement.
Whether step 13-3 successfully obtains the MIB that MIB:UE judges whether successfully to read target adjacent section, if so, then perform step 13-4, otherwise this flow process terminates.
It is poor according to the frame border time between Serving cell and adjacent cell that step 13-4SIB1 receives gap: UE, SFN difference, and network and the predefined SIB1 of UE receive gap configuration criterion and start SIB1 and receive gap.
Step 13-5UE reads SIB1:UE and receives at SIB1 the SIB1 that adjacent cell is read in gap.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. in Radio Network System, obtain a method for the system message of adjacent cell, it is characterized in that, comprise the following steps:
Subscriber equipment is to Serving cell transmission time information, wherein, described temporal information refers to, at least one in time differential information between described Serving cell and described adjacent cell and the schedule information of described adjacent domain system message, described schedule information refers to, at least one in cycle and deviation information;
Wherein, described deviation information is the transmitting time deviation of the segmentation of System information block;
Wherein, described time differential information refers to, frame border time between Serving cell and adjacent cell is poor, at least one in frame information and parity frame boundary time difference, described frame information refers to, at least one in the System Frame Number of described Serving cell of the reception gap that the parity frame difference between described Serving cell and described adjacent cell, the System Frame Number deviation between described Serving cell and described adjacent cell and described subscriber equipment will start;
Wherein, described system message refers to the host system message block MIB in LTE system and at least one in System information block 1 SIB1, or the host system message block MIB in UMTS system and at least one in System information block 3 SIB3, System information block 4 SIB4;
Wherein, described Serving cell configures described adjacent domain system message according to the temporal information that described subscriber equipment sends and receives opportunity, or, the temporal information that described Serving cell sends according to described subscriber equipment or know that described subscriber equipment receives the opportunity of described adjacent domain system message according to the combination of described temporal information and predetermined policy;
Subscriber equipment is according to described temporal information or the system message receiving described adjacent cell according to the combination of described temporal information and predetermined policy; Or
The adjacent domain system message that subscriber equipment configures according to described Serving cell receives the system message receiving described adjacent cell opportunity.
2. method according to claim 1, described temporal information is the information on the opportunity that sends about described adjacent domain system message that described subscriber equipment gets.
3. method according to claim 1, described predetermined policy is the configuration guidelines that described subscriber equipment and the predefined adjacent domain system message of network side receive opportunity.
4. method according to claim 1, is characterized in that:
The frame border time that described subscriber equipment sends between described Serving cell and described adjacent cell to described Serving cell is poor;
Determine the reception opportunity of the host system message block of described adjacent cell according to the frame border time difference between described Serving cell and described adjacent cell or according to described frame border time difference with the combination of predetermined policy and receive described host system message block;
Described subscriber equipment send frame information between described Serving cell and described adjacent cell to described Serving cell or parity frame boundary time poor;
According to the frame border time difference between described Serving cell and described adjacent cell and frame information, or it is poor according to the parity frame boundary time between described Serving cell and described adjacent cell, or poor according to described frame border time and frame information and predetermined policy combination, or according to described parity frame boundary time difference and the combination of predetermined policy, determine the reception opportunity of the System information block 1 of described adjacent cell and receive described System information block 1.
5. method according to claim 4, it is characterized in that, described according to the frame border time difference between described Serving cell and described adjacent cell or determine reception opportunity of the host system message block of described adjacent cell according to described frame border time difference and the combination of predetermined policy and the step receiving described host system message block comprises:
The reception opportunity of described host system message block is determined according to described frame border time difference in described Serving cell;
Described subscriber equipment receives described host system message block in the reception of described host system message block opportunity.
6. method according to claim 4, it is characterized in that, described according to the frame border time difference between described Serving cell and described adjacent cell or determine reception opportunity of the host system message block of described adjacent cell according to described frame border time difference and the combination of predetermined policy and the step receiving described host system message block comprises:
Described Serving cell sends to described subscriber equipment and confirms instruction;
Described subscriber equipment is according to 1) receive the described temporal information confirming instruction, 2) described frame border time is poor, and 3) receive described host system message block by the described predetermined policy on described Serving cell and described subscriber equipment predefined reception opportunity determining described host system message block.
7. method according to claim 6, is characterized in that, described predetermined policy comprise following at least one:
The cycle on reception opportunity of described host system message block, length, original position, durations.
8. method according to claim 4, it is characterized in that, according to the frame border time difference between described Serving cell and described adjacent cell and frame information, or it is poor according to the parity frame boundary time between described Serving cell and described adjacent cell, or poor according to described frame border time and frame information and predetermined policy combination, or according to the combination of described parity frame boundary time difference with predetermined policy, determine reception opportunity of the System information block 1 of described adjacent cell and the step receiving described System information block 1 comprises:
Described Serving cell sends to described subscriber equipment and confirms instruction;
Described subscriber equipment is according to 1) receive the described temporal information confirming instruction, 2) described frame information or parity frame boundary time poor, and/or 3) receive described System information block 1 by the described predetermined policy on described Serving cell and described subscriber equipment predefined reception opportunity determining described System information block 1.
9. the method according to any one in Claims 1-4, is characterized in that, described subscriber equipment sends described temporal information by following to described Serving cell:
Physical layer signaling;
The control unit MAC CE of medium education; Or
Radio resource control signaling.
10. method according to claim 4, is characterized in that, described subscriber equipment also sends Physical Cell Identifier PCI and the frequency information of described adjacent cell to described Serving cell.
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| CN109327853A (en) * | 2012-07-13 | 2019-02-12 | 中兴通讯股份有限公司 | A kind of method of reseptance and device of system information |
| CN108834105A (en) * | 2017-05-03 | 2018-11-16 | 夏普株式会社 | User equipment, base station and correlation technique |
| CN109379751B (en) * | 2017-08-11 | 2021-03-23 | 展讯通信（上海）有限公司 | Neighbor cell reporting method and device, readable storage medium, user equipment and base station |
| CN109474963B (en) * | 2017-09-08 | 2021-06-25 | 展讯通信（上海）有限公司 | Method, base station, user equipment and medium for acquiring and reporting neighbor synchronization information |
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