WO2014179987A1 - Procede de selection de cellule, equipement utilisateur et station de base - Google Patents

Procede de selection de cellule, equipement utilisateur et station de base Download PDF

Info

Publication number
WO2014179987A1
WO2014179987A1 PCT/CN2013/075469 CN2013075469W WO2014179987A1 WO 2014179987 A1 WO2014179987 A1 WO 2014179987A1 CN 2013075469 W CN2013075469 W CN 2013075469W WO 2014179987 A1 WO2014179987 A1 WO 2014179987A1
Authority
WO
WIPO (PCT)
Prior art keywords
cell
parameter
drs
priority
level
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2013/075469
Other languages
English (en)
Chinese (zh)
Inventor
柴丽
时洁
蔺波
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to CN201380002064.9A priority Critical patent/CN104365146B/zh
Priority to PCT/CN2013/075469 priority patent/WO2014179987A1/fr
Priority to CN201810271015.XA priority patent/CN108337716B/zh
Publication of WO2014179987A1 publication Critical patent/WO2014179987A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/12—Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/20—Selecting an access point

Definitions

  • the present invention relates to communications technologies, and in particular, to a cell selection method, a user equipment, and a base station.
  • enhanced cells appear, and the functions of the enhanced cells are improved compared with the ordinary cells; for example, one type of enhanced cell is a new carrier type defined in the Release-11 version (New Carrier Type). , referred to as: NCT).
  • NCT new Carrier Type
  • the cell selection process is performed to camp on a certain cell, and then the service can be initiated in this cell.
  • the present invention provides a cell selection method, a user equipment, and a base station to improve the utilization rate of radio resources.
  • a cell selection method including:
  • the user equipment UE acquires a cell selection parameter sent by the base station, where the cell selection parameter is set by the base station as a parameter value corresponding to the capability level of the UE;
  • the UE performs cell selection processing according to the parameter value, and determines whether the cell is selected as the target cell.
  • the cell selection parameter includes: The first parameter required by the cell selection criteria.
  • the cell selection parameter is set by the base station to be a capability level of the UE
  • the parameter value includes: if the UE is the UE of the first capability level, the parameter value is used to increase the threshold for the UE to select the cell as the target cell; if the UE is the second capability level The UE, the parameter value is used to lower the threshold for the UE to select the cell as a target cell, where the first capability level is lower than the second capability level.
  • the cell selection parameter includes: a priority corresponding to a capability level of the UE Level parameter.
  • the priority parameter includes: a frequency priority corresponding to a frequency of the cell, or a cell corresponding to the cell Priority, or a cell type priority corresponding to the type of the cell.
  • the determining, by the base station, the parameter value corresponding to the capability level of the UE If the UE is the UE of the first capability level, the priority parameter takes a first level value; if the UE is a UE of the second capability level, the priority parameter takes a second level value, where the first capability level Below the second capability level, the first level value is lower than the second level value.
  • the information of the DRS includes location and pattern feature information of the DRS.
  • the selecting, by the UE, one of the plurality of cells that are found to be the strongest cell includes: setting the UE of the first capability level The priority of the enhanced cell is higher than that of the traditional cell, and the strongest cell is selected among the enhanced cells; the UE of the second capability level sets the priority of the legacy cell to be higher than the priority of the enhanced cell, in the traditional cell Selecting the strongest cell; wherein the first capability level is higher than the second capability level.
  • the UE of the first capability level selects the strongest cell in the enhanced cell, including: A UE of a capability level cannot find the strongest cell in the enhanced cell, and then goes to the traditional cell to find the strongest cell.
  • the base station of the cell sets the cell selection parameter to a parameter value corresponding to the capability level of the user equipment UE;
  • the cell selection parameter includes: a first parameter required by a cell selection criterion.
  • the base station of the cell sets the cell selection parameter to the user equipment
  • the parameter value corresponding to the capability level of the UE includes: if the UE is the UE of the first capability level, the parameter value set by the base station for the cell selection parameter is used to improve the UE to select the cell as a target. a threshold of a cell; if the UE is a UE of a second capability level, the parameter value set by the base station for the cell selection parameter is used to reduce a threshold for the UE to select the cell as a target cell; The first ability level is lower than the second ability level.
  • the cell selection parameter includes: a priority corresponding to a capability level of the UE Level parameter.
  • the priority parameter includes: a frequency priority corresponding to a frequency of the cell, or a cell corresponding to the cell Priority, or a cell type priority corresponding to the type of the cell.
  • the base station of the cell sets the cell selection parameter to a parameter value corresponding to the capability level of the user equipment UE, including: The base station sets a first level value and a second level value for the priority parameter, where the first level value corresponds to the UE of the first capability level, and the second level value corresponds to the UE of the second capability level; The first capability level is lower than the second capability level, and the first level value is lower than the second level value.
  • the value of the priority parameter is 0 or 1; or the value of the priority parameter is 0 to n Any natural number between, the n represents a natural number.
  • a user equipment including:
  • a parameter obtaining unit configured to acquire a cell selection parameter sent by a base station of the cell, where the cell selection parameter is set by the base station to a parameter value corresponding to a capability level of the UE;
  • a selection processing unit configured to perform cell selection processing according to the parameter value, and determine whether to select the cell as the target cell.
  • the cell selection parameter that is obtained by the parameter acquiring unit includes: a first parameter required by a cell selection criterion.
  • the cell selection parameter acquired by the parameter obtaining unit includes: a required for a cell reselection criterion Two parameters.
  • the parameter acquiring unit Obtaining the parameter value is used to increase the threshold for the UE to select the cell as a target cell; if the UE is a UE of a second capability level, the parameter value acquired by the parameter obtaining unit is used for Reducing the threshold for the UE to select the cell as a target cell; the first capability level is lower than the second capability level.
  • the cell selection parameter acquired by the parameter acquiring unit includes: The priority parameter corresponding to the capability level of the UE.
  • the parameter acquiring unit obtains the The priority parameter takes a first level value; if the UE is a UE whose capability level does not match the capability of the cell, the priority parameter obtained by the parameter obtaining unit takes a second level value; A level value is higher than the second level value.
  • the priority parameter has a value of 0 or 1; or, the priority parameter has a value of 0 to n. Any natural number between, the n represents a natural number.
  • the signaling receiving unit is specifically configured to: receive the DRS according to the information of the stored DRS; or, according to the slave service Obtaining, by the DRS information of the cell, the information about the DRS of the cell obtained by the system message of the cell, or acquiring the DRS information of the cell by using the dedicated signaling sent by the base station of the serving cell, and receiving the information according to the information of the DRS.
  • the DRS information of the cell is obtained according to the physical cell identifier of the cell, and the DRS is received according to the information of the DRS; or the DRS information according to the fixed subset of the DRS Receiving the DRS.
  • the information of the DRS includes location and pattern feature information of the DRS.
  • the selecting, the processing unit is specifically used by the UE that matches the function of the cell that sends the DRS, and sends the DRS.
  • the priority of the cell is set to a first priority; and/or the UE that does not match the function of the cell that sends the DRS sets the priority of the cell that sends the DRS to a second priority; A priority is higher than the second priority.
  • the selecting processing unit is specifically configured to select one strongest cell from the plurality of discovered cells.
  • the selecting processing unit is specifically configured to set a priority of the enhanced cell to be higher than that of the traditional cell, where The strongest cell is selected in the enhanced cell; or the priority of the legacy cell is set to be higher than the priority of the enhanced cell, and the strongest cell is selected in the traditional cell.
  • the selecting processing unit is further configured to: when the strongest cell is not found in the enhanced cell, Then, the traditional cell is searched for the strongest cell.
  • the parameter acquiring unit is further configured to acquire a cell identifier of the cell before the UE acquires a cell selection parameter sent by a base station of the cell; And a second cell discovery unit, configured to discover the cell according to the cell identifier.
  • a base station including:
  • a parameter setting unit configured to set a cell selection parameter to a parameter value corresponding to a capability level of the user equipment UE;
  • a parameter sending unit configured to send the cell selection parameter to the UE, so that the UE determines, according to the parameter value, whether the cell is selected as a target cell.
  • the cell selection parameter that is set by the parameter setting unit includes: a first parameter required by a cell selection criterion.
  • the cell selection parameter that is set by the parameter setting unit includes: a second parameter required by a cell reselection criterion.
  • the parameter setting unit is specifically configured to: a level of the UE, the parameter value set for the cell selection parameter is used to increase the threshold for the UE to select the cell as the target cell; when the UE is the UE of the second capability level, select the cell for the cell.
  • the parameter value set by the parameter is used to reduce the threshold for the UE to select the cell as the target cell; the first capability level is lower than the second capability level.
  • the cell selection parameter that is set by the parameter setting unit includes: A priority parameter corresponding to the capability level of the UE.
  • the priority parameter includes: a frequency priority corresponding to a frequency of the cell, or a cell corresponding to the cell Priority, or a cell type priority corresponding to the type of the cell.
  • the parameter setting unit when the priority parameter is set, is specifically used to: the base station is the priority Setting a first level value and a second level value, the first level value corresponding to the UE of the first capability level, the second level value corresponding to the UE of the second capability level; wherein the first level value is low At a second level value, the first capability level is lower than the second capability level.
  • the parameter setting unit when setting the priority parameter, is specifically configured to: set a first level value and a second a level value, where the second level value corresponds to a UE whose capability level matches the capability of the cell, where the first level value corresponds to a UE whose capability level does not match the capability of the cell; wherein the first level The value is lower than the second level value.
  • the priority parameter has a value of 0 or 1; or the priority parameter has a value of 0 to n. Any natural number between, the n represents a natural number.
  • FIG. 1 is a schematic flow chart of an embodiment of a cell selection method according to the present invention.
  • FIG. 2 is a schematic flowchart of another embodiment of a cell selection method according to the present invention.
  • FIG. 3 is a schematic flowchart of still another embodiment of a cell selection method according to the present invention.
  • FIG. 4 is a schematic diagram of cell reselection in another embodiment of a cell selection method according to the present invention.
  • FIG. 5 is a schematic structural diagram of an embodiment of a user equipment according to the present invention.
  • FIG. 6 is a schematic structural diagram of another embodiment of a user equipment according to the present invention.
  • FIG. 7 is a schematic structural diagram of still another embodiment of a user equipment according to the present invention
  • FIG. 8 is a schematic structural diagram of an embodiment of a base station according to the present invention
  • the UE when performing cell selection, the UE still performs the normal cell selection process, for example, including (because it is a regular process, it is not detailed):
  • the cell selection parameter refers to a parameter that is needed in the cell selection process, and the UE performs correlation calculation of the cell selection according to the cell selection parameter, and the parameter value of the cell selection parameter can affect The result of the UE's selection of the cell, for example, select or not.
  • cell selection parameters are listed below, but those skilled in the art can understand that in the specific implementation, other parameters may also be used, and are not limited to the following parameters:
  • a parameter used in the above-mentioned cell selection criterion (such as the S criterion), which may be referred to as a first parameter, is sent by the base station of the enhanced cell to the UE, and the UE performs calculation of the criterion to determine whether to select the enhancement.
  • a cell reselection criterion such as an R criterion
  • a base station that needs to enhance the cell is sent to the UE, and the UE performs cell weight according to the UE.
  • the calculation of the criterion is used to determine whether the enhanced cell is to be selected as the replaced cell; for example, it may be a priority parameter corresponding to the enhanced cell in the cell reselection process, and the value of the priority parameter is set.
  • the priority parameter also corresponds to the capability level of the UE.
  • the priority parameter includes, for example, a frequency priority parameter corresponding to the frequency of the enhanced cell, or a cell priority corresponding to the enhanced cell, or a cell type priority corresponding to the type of the enhanced cell. .
  • the cell selection parameter sent by the base station of the enhanced cell is obtained by the UE, which may be obtained by the UE directly from the base station of the enhanced cell, or may be obtained indirectly.
  • the base station of the enhanced cell passes the foregoing cell selection parameter through the base station.
  • the inter-interface is sent to the serving cell where the UE is located, and then the base station of the serving cell carries the parameter in the system information and sends the parameter to the UE.
  • the cell selection parameter is set to a parameter value corresponding to the capability level of the UE, where the base station of the enhanced cell sets the cell selection parameter to a parameter value related to the UE capability level, so that the UE is based on
  • the parameter value is used for cell selection, the UE selection results of different capability levels are different.
  • the parameter a has only one value, that is, the parameter value (for example, the parameter value is al), regardless of the capability level of the UE.
  • the parameter value is calculated by the S criterion, and the calculation result is the same, and the cell is selected or not selected.
  • the base station of the enhanced cell sets two parameters for the parameter a.
  • the value is a first parameter value a2 corresponding to the low capability level UE and a second parameter value a3 corresponding to the high capability level UE.
  • the characteristics of the two parameter values are: the low capability level UE can only read a2, cannot Obtaining a3, and the result obtained by the low-capability UE performing the S-criteria calculation according to the a2 is that it is more difficult to select the enhanced cell relative to the high-capacity-level UE; and the high-capacity-level UE can only read a3, and cannot read a2. And the result obtained by the high-capability UE performing the S-criteria calculation according to the a3 is that the enhanced cell is relatively easy to select with respect to the low-capacity level UE.
  • a2 serves to improve the threshold of the low-capacity level UE to select the enhanced cell as the target cell
  • a3 serves to reduce the threshold for the high-capacity level UE to select the enhanced cell as the target cell, and promotes the function of the UE and the cell. Match.
  • the above DRS, its physical sequence and/or location on the radio resource may be different from the previous SS, but the DRS may include the SS function; for example, in the downlink signaling sent by the base station of the enhanced cell, the SS and the SS are no longer sent.
  • the DRS includes an SS function
  • the CRS may be a CRS of a 5 ms transmission interval.
  • there are many types of DRS such as the following four types:
  • Case IB The position and pattern of the DRS of each cell is fixed; different cells can be different.
  • Case lc the location and pattern of the DRS of each cell (including the DRS distribution pattern on the unit subframe, and the transmission pattern between the subframes, such as which subframes transmit DRS on the subframe within 400 ms, and which do not transmit DRS). And pattern) is flexible and configurable; (the position of the subframe / PRB, the transmission period of the DRS, the pattern, and the density on a certain subframe); the DRS here may be a cell level or a UE level.
  • DRS resources are divided into two categories: one is a fixed subset, each cell is the same; the other is a flexible subset, each cell is different.
  • the DRS resource is a resource that carries DRS information.
  • the fixed subset that is, the location of the resource is fixed.
  • the fixed location is a certain RE bearer
  • the flexible subset refers to the location of the RE that carries the DRS.
  • the UE may receive the DRS sent by the base station of the enhanced cell, and discover the enhanced cell according to the DRS; for example, discover the enhanced cell according to the location and the pattern feature of the DRS; or discover the enhanced cell according to the DRS resource of the fixed subset of the DRS.
  • the UE obtains the parameter value of the cell selection parameter corresponding to the capability level of the UE, and performs cell selection processing according to the parameter value, so that the selection result corresponding to the capability level can be obtained, thereby making the capability level of the different capability level
  • the UE tries to select a cell that matches its capabilities, and improves the utilization of radio resources.
  • FIG. 2 is a schematic flowchart of another embodiment of a method for selecting a cell according to the present invention.
  • the method is performed by using a base station of an enhanced cell as an execution entity.
  • the method may include:
  • the base station of the cell sets the cell selection parameter to a parameter value corresponding to the capability level of the user equipment UE.
  • the cell selection parameter is, for example, a parameter (which may be referred to as a first parameter) required by a cell selection criterion (eg, S criterion) used in cell selection, or a priority parameter related to a cell (eg, frequency)
  • a cell selection criterion eg, S criterion
  • a priority parameter related to a cell eg, frequency
  • the priority cell priority or cell type priority
  • the parameters required by the cell reselection criteria eg, the R criterion used in cell reselection (which may be referred to as the second parameter).
  • the UE After acquiring the cell selection parameter sent by the base station, the UE performs calculation according to the parameter, and determines whether to select the enhanced cell as the target cell. For example, a UE with a low capability level can only obtain a first parameter value corresponding to its capability level, but cannot obtain a second parameter value. After the UE calculates according to the first parameter value, the result obtained by the UE is relative to the high capability level. It is more difficult for the UE to select the enhanced cell. The UE with high capability level can only obtain the second parameter value corresponding to its capability level, but cannot obtain the first parameter value. The UE can only calculate according to the second parameter value. The calculated result is relative to the low capability. It is easier for the level UE to select the enhanced cell.
  • Embodiment 3 Embodiment 3
  • FIG. 3 is a schematic flowchart of a cell selection method according to another embodiment of the present invention.
  • a base station of an enhanced cell sends a DRS
  • a UE discovers an enhanced cell according to a DRS
  • the base station sends a priority corresponding to a capability level of the UE.
  • the parameter is selected by the UE according to the priority parameter when the cell is reselected. As shown in Figure 3, it can include:
  • the interface between the base stations may also exchange information between two base stations in other manners.
  • the UE may also obtain configuration information of some cells in advance, such as the ⁇ relationship, the antenna port SS, the CRS, the CSI-RS, and/or the DRS-related configuration information, before the subsequent cell selection;
  • the DRS configuration information includes: antenna port information (antenna port information may be the number of antennas and/or antenna port number); frequency domain resource configuration information; code domain resource configuration information; subframe configuration information (including subframe offset information and The period information); and the ratio of the transmission power of the PDSCH and the DRS assumed by the UE; may also include the peer information of the measured cell, such as SFN shift/subframe shift/symbol shift ("Yes" and/or "relationship").
  • the information may be that the UE receives the neighboring, or the same coverage, or the similarly-covered neighboring cell, to inform the
  • MME mobility management entity
  • the UE receives the DRS sent by the base station of the enhanced cell, uses the DRS to discover the enhanced cell, and selects the strongest cell from the discovered cell.
  • the UE has multiple neighboring cells that are enhanced cells, and the UE will receive the downlink signaling DRS sent by the base stations of the enhanced cells, and if the UE has neighboring cells that are traditional cells, the UE also receives the traditional cells.
  • Downlink signaling sent by the base station such as SS or CRS.
  • UE based
  • the location and pattern features of the DRS are used to discover the enhanced cell, that is, the location and image characteristics of the DRS and the SS, CRS, etc. are different, and the UE uses the difference between the two to determine which cells are traditional cells and which cells are Enhance the cell.
  • the position and pattern features that is, the transmission pattern of the DRS between the subframes mentioned above, the density on a certain subframe, and the like.
  • the UE may find multiple enhanced cells, and may also find multiple traditional cells at the same time.
  • the UE with high capability level may consider that the priority of the enhanced cell is higher, and the priority of the traditional cell is lower, so that priority is given.
  • the low-capacity level UE considers that the priority of the traditional cell is higher than that of the enhanced cell, so that the strongest cell is preferentially found in the traditional cell; or, it can be preset that the low-capacity level UE cannot
  • the new signaling of the DRS transmitted by the base station of the enhanced cell is identified, and only the strongest cell can be found in the legacy cell.
  • the UE will use the measured value of the DRS to perform subsequent comparison of the strongest cell, or use the CRS. And/or the measured value of the CSI-RS is compared with the subsequent strongest cell, or the measured value of at least one of the DRS, the CRS, and the CSI-RS is used for comparison of the following strongest cells.
  • the UE determines whether the selected strongest cell satisfies the S criterion, and if yes, selects the cell to be a suitable cell (suitable cel l ), otherwise, continues to search for other cells;
  • the S criterion is used as the cell selection criterion.
  • the parameter required in the calculation of the criterion may be referred to as a first parameter, where the first parameter is a new parameter sent by the base station of the enhanced cell, for example, in the DRS.
  • the UE with only the high capability level can be configured to read the first parameter, and perform the calculation of the S criterion to determine whether the selected strongest cell satisfies the S criterion: if yes, select the cell as a suitable one.
  • the cell camps; if not, the cell cannot be selected as a suitable cell and continues to search for other cells.
  • the low capability level UE cannot read the first parameter, and cannot calculate the S criterion, and the enhanced cell cannot be selected.
  • the parameters required by the S criterion are obtained by the UE reading the system message of the current serving cell, and the parameter is obtained by the base station of the previous serving cell from the base station of the enhanced cell.
  • the UE performs cell reselection according to a priority parameter corresponding to the enhanced cell.
  • the UE will continue to perform cell reselection to keep itself in a cell with high quality of service.
  • the UE In the process of cell reselection, the UE must consider the priority parameters of each candidate cell, and also calculate the cell reselection criteria according to the cell selection parameters of the candidate cell. Since the cell reselection process is a conventional technique, this embodiment is not described in detail, and only the reselection process related to the improvement is described as follows:
  • the base station of the enhanced cell improves the priority parameter corresponding to the enhanced cell.
  • the priority parameter may be, for example, a frequency priority corresponding to the frequency of the enhanced cell, or a cell priority corresponding to the enhanced cell, or a cell type priority corresponding to the enhanced cell type.
  • the base station of the enhanced cell may set a frequency priority for the enhanced cell, and set two parameter values corresponding to the capability level of the UE for the frequency priority, and one is the first parameter value corresponding to the low capability level UE (R8/ R9 priority), this parameter value is configured relatively low, that is, the lower level value; the other is the second parameter value corresponding to the high capability level UE (eg, priority for m (m: NCT, ESC or D2D, etc.) )), this parameter value is configured relatively high, that is, a high level value.
  • R8/ R9 priority the first parameter value corresponding to the low capability level UE
  • this parameter value is configured relatively low, that is, the lower level value
  • the other is the second parameter value corresponding to the high capability level UE (eg, priority for m (m: NCT, ESC or D2D, etc.) ))
  • this parameter value is configured relatively high, that is, a high level value.
  • the low capability level UE does not have the ability to support enhanced functions of the enhanced cell, it cannot read the second parameter value, can only read the first parameter value, and because the first parameter value is configured lower (take the lower level value)
  • the UE decides to no longer select the enhanced cell; the high capability level UE supports the enhanced function of the enhanced cell, and can The second parameter value is read, and because the second parameter value is configured higher (take the high level value), the UE decides to select the enhanced cell.
  • the priority parameter is taken as a high level value; if the UE's capability level is If the capabilities of the cell do not match (for example, UE supports function a, cell support functions a and b), the priority parameter is taken as a lower level value.
  • the base station of the cell may set two values, that is, a low level value and a high level value, for the priority parameter.
  • the UE may read the high level. Value; if the UE determines that its capability level does not match the capability of the cell, the UE can read the low level value.
  • the value of the priority parameter may be implemented in various manners in a specific implementation. For example, it can take 0 or 1, such as 0 for low level, 1 for high level, or 0 to n for any natural number (where n is a natural number), and the level is determined according to the size of the natural number. The level is, for example, 2 for the low level and 5 for the high level.
  • the UE uses the DRS sent by the cell base station to discover the cell.
  • the base station of the cell sends the DRS
  • the UE discovers the cell according to the DRS
  • the base station sends the priority parameter corresponding to the capability level of the UE.
  • the UE selects according to the priority parameter when the cell is reselected.
  • Figure 3 can include:
  • the serving cell where the UE is located obtains the configuration information of the DRS in the neighboring area through the inter-base station interface (the step is optional);
  • the cell in which the UE is currently located is referred to as a serving cell, and assuming that the neighboring cell of the serving cell is an enhanced cell, the base station of the serving cell and the base station of the enhanced cell will establish a connection, and interact with each other through the interface between the base stations.
  • the interface between the base stations may also be through other parties.
  • the method exchanges information between two base stations.
  • the UE may also obtain configuration information of some cells in advance, such as the ⁇ relationship, the antenna port SS, the CRS, the CSI-RS, and/or the DRS-related configuration information, before the subsequent cell selection;
  • the DRS configuration information includes: antenna port information (antenna port information may be the number of antennas and/or antenna port number); frequency domain resource configuration information; code domain resource configuration information; subframe configuration information (including subframe offset information and The period information); and the ratio of the transmission power of the PDSCH and the DRS assumed by the UE; may also include the peer information of the measured cell, such as SFN shift/subframe shift/symbol shift ("Yes" and/or "relationship").
  • the information may be that the UE receives the neighboring, or the same coverage, or the similarly-covered neighboring cell,
  • the base stations when they establish a connection through the S1 interface, they can pass the mobility management entity.
  • the base station of the cell may send a new downlink signaling, that is, the reference signaling is found.
  • CRS CRS Signaling
  • SS ie, PSS/SSS: PSS Primary Synchronization signal primary synchronization signal/SSS, Secondary synchronization signal
  • channel-state information reference signal channel-state information reference signal, referred to as: CSI-RS
  • the UE utilizes at least one of the above signaling combinations for cell discovery and/or measurement.
  • the density of the DRS appearing in the unit subframe may be higher than the current CRS density, and the transmission period of the DRS may be longer than the transmission period of the existing CRS and CSI-RS.
  • the UE receives the DRS according to the information of the stored DRS;
  • the UE receives the DRS according to the information about the DRS of the cell obtained from the system message of the serving cell;
  • the UE obtains the DRS information of the cell by using the dedicated signaling sent by the base station of the serving cell, and receives the DRS according to the information of the DRS;
  • Step 303 is introduced.
  • the UE receives the DRS according to the information of the stored DRS;
  • the UE receives the DRS according to the information about the DRS of the cell obtained from the system message of the serving cell;
  • the UE obtains the information of the DRS of the corresponding cell according to the physical cell identifier of the cell, and receives the DRS according to the information of the DRS.
  • the UE receives the DRS according to DRS information of a fixed subset of the DRS.
  • the information of the DRS described above includes the location and pattern characteristic information of the DRS.
  • Step 303 is introduced.
  • DRS resources are divided into two categories: one is a fixed subset, each cell is the same; the other is a flexible subset, each cell is different.
  • the DRS resource here is the resource that carries the DRS information.
  • the source, the fixed subset, that is, the location of the resource is fixed, for example, the fixed is a certain RE bearer, and the flexible subset refers to the location of the RE that carries the DRS.
  • the UE receives the DRS sent by the base station of the cell, uses the DRS to discover the cell, and selects one strongest cell from the discovered cells.
  • the UE has multiple neighboring cells that are all enhanced cells, and the UE will receive the downlink signaling DRS sent by the base stations of the enhanced cells, and if the UE has neighboring cells that are traditional cells, the UE also receives the traditional cells.
  • Downlink signaling sent by the base station such as SS or CRS.
  • the UE discovers the cell according to the location and the pattern feature of the DRS, that is, the location and image features of the DRS and the SS, CRS, etc. are different, and the UE uses the difference between the two to determine which cells are the traditional cell and which cells. It is an enhanced cell.
  • the position and pattern features that is, the transmission pattern of the DRS between the subframes mentioned above, the density on a certain subframe, and the like.
  • the low-capacity level UE considers that the priority of the legacy cell is higher than that of the enhanced cell, so that the most powerful cell is preferentially searched in the traditional cell, that is, the UE of the low-capacity level sets the priority of the legacy cell compared to the enhanced cell.
  • the priority is high, and the strongest cell is selected in the traditional cell; or, it may be preset that the low-capacity level UE cannot identify the new signaling of the DRS sent by the base station of the cell, but only in the traditional cell. Find the strongest community.
  • the strongest cell may be defined as the condition that the signal power of the cell is the strongest and/or the interference is the smallest, or the cell signal satisfies a certain formula.
  • the UE that matches the function of the transmitting DRS cell sets the priority of the cell that sends the DRS to a high priority; and/or the UE that does not match the function of the transmitting DRS cell sets the priority of the cell that sends the DRS to a low priority. priority.
  • the UE will use the measured value of the DRS to perform subsequent comparison of the strongest cell, or use CRS, and The measured value of the CSI-RS is compared with the subsequent strongest cell, or the measured value of at least one of the DRS, CRS, and CSI-RS is used for comparison of the following strongest cells.
  • the embodiment of the present invention further provides a cell selection method, in which the UE receives the downlink discovery reference signaling DRS sent by the base station of the cell; discovers the cell according to the DRS; and selects the cell.
  • a cell selection method in which the UE receives the downlink discovery reference signaling DRS sent by the base station of the cell; discovers the cell according to the DRS; and selects the cell.
  • the UE receives the DRS according to the information about the DRS of the cell obtained from the system message of the serving cell;
  • the UE acquires the cell by using dedicated signaling sent by a base station of the serving cell.
  • the UE receives the DRS according to DRS information of a fixed subset of the DRS.
  • the information of the DRS includes location and pattern feature information of the DRS.
  • the UE selecting the cell includes:
  • the UE that matches the function of the cell that sends the DRS sets the priority of the cell that sends the DRS to a high priority
  • the selecting, by the high-capability UE, the strongest cell in the enhanced cell includes: if the high-achieving-level UE cannot find the strongest cell in the enhanced cell, go to Find the strongest cell in the traditional cell.
  • FIG. 4 is a schematic diagram of cell reselection in another embodiment of a cell selection method according to the present invention.
  • UE-A in the figure is a legacy UE (ie, a UE with low capability level)
  • UE-B and UE- C is a new type of UE (ie, a UE with high capability level)
  • cell l and cell 2 are legacy cells
  • cell 3, cell 4, and cell 5 are enhanced cells (for example, NCT cells).
  • cel ll is a higher priority
  • cell3 and cell5 are lower priority because the priority values of the enhanced cells cell3 and cell5 read by UE-A have been configured by the base station.
  • Embodiment 4 Compared with the third embodiment, when the UE cell reselection, the second parameter required for the cell reselection criterion calculation is improved, and the improvement manner is similar to the improvement of the priority parameter.
  • two parameter values are also set for at least one of the calculation parameters related to the R criterion.
  • the parameters Qmeans and Qoffset used in the R criterion two parameter values may be respectively set, including: The first parameter value q1 corresponding to the low capability level UE and the second parameter value q2 corresponding to the high capability level UE enable the low capability level UE to only read q1, and use q1 to prevent the low capability level UE from selecting the enhancement.
  • the cell enables the high capability level UE to only read q2, and utilizes q2 to facilitate the high capability level UE to select the enhanced cell.
  • At least one of the calculation parameters related to the rank criterion of the enhanced cell (such as an NCT cell), (eg, Qmeas, Qoffset value), introducing new parameters such as Qmeas-m, Qoffset-m (m: NCT, ESC or D2D, etc.).
  • the scheme of the third embodiment is also applicable to the embodiment, for example, during the cell reselection process,
  • the scheme for improving the priority parameter described in the embodiment may be used separately, or the scheme for improving the R criterion parameter described in this embodiment may be separately adopted, or the priority parameter and the R criterion parameter may be improved.
  • the UE in this embodiment may adopt the following scheme in the calculation of the cell selection criterion: For example, the UE reads the system message of the current cell, and obtains parameters required by the cell selection criterion (S criterion), for example, Srxlev/Squal or Srxlev-e /Squal-e, using the measured value of the DRS resource in the fixed subset of the DRS set to determine whether the selected strongest cell satisfies the S criterion (ie, the parameter value is taken from a fixed subset in the DRS set)
  • S criterion the parameter value is taken from a fixed subset in the DRS set
  • the measured value of the DRS resource, but the value of the parameter can be expressed by Srxlev/Squal or by Srxlev-e /Squal-e; optionally, when expressed by Srxlev/Squal, it can be read by the low-capacity level UE.
  • the UE reads the system message of the current cell, and obtains parameters required by the cell selection criterion (S criterion), such as Srxlev/Squal or Srxlev-e /Squal-e, and the complete set of DRS configurations of the current cell, using DRS.
  • S criterion cell selection criterion
  • the measured value of the DRS resource in the configured ensemble is used to determine whether the selected strongest cell satisfies the S criterion: if satisfied, the cell is selected as a suitable cell camp; if not, the cell cannot be selected as a suitable cell , continue to find other communities.
  • the UE in this embodiment may use the measured value of the DRS resource in the corpus of the DRS configuration to perform the R criterion decision; for example, the measured value of the DRS resource may be the R criterion calculation
  • the parameter value of the required cell selection parameter which can be only high energy
  • the force level UE reads, and may also include a first parameter value that can be read by the low capability level UE and a second parameter value that can be read by the high capability level UE.
  • the base station of the enhanced cell sends a new downlink signaling DRS.
  • the downlink signaling sent by the base station of the enhanced cell may be the same as that of the traditional cell, for example, SS, CSI-RS.
  • its physical sequence and / or location on the wireless resources can be the same as the previous SS, CSI-RS.
  • the UE may obtain the cell identifier of the enhanced cell in advance, for example, by using the broadcast mode or the dedicated signaling manner in the current cell and/or the neighboring cell to notify the UE of the physical cell identity of the enhanced cell (Physical Cell Identity, referred to as: PCI) information, the UE stores the cell identity of the enhanced cell.
  • PCI Physical Cell Identity
  • the UE obtains the cell identity of a cell, it can determine whether the cell is an enhanced cell by comparing with the information stored in the cell, that is, the enhanced cell is found according to the cell identity. This way makes the UE find that the enhanced cell is faster.
  • a parameter obtaining unit 51 configured to acquire a cell selection parameter sent by a base station of the enhanced cell, where the cell selection parameter is set by the base station to a parameter value corresponding to a capability level of the UE;
  • the cell selection parameter acquired by the parameter obtaining unit 51 includes: a second parameter required by the cell reselection criterion.
  • FIG. 7 is a schematic structural diagram of another embodiment of a user equipment according to the present invention. As shown in FIG. 7, in the structure shown in FIG. 5, the user equipment further includes: a second cell discovery unit 55;
  • the signaling receiving unit is specifically configured to:
  • the information of the DRS includes location and pattern feature information of the DRS.
  • the selection processing unit is specifically configured to: use a UE that matches the function of the cell that sends the DRS, and set a priority of the cell that sends the DRS as a first priority; and/or, and send
  • the selection processing unit is specifically configured to select one of the plurality of cells found.
  • the selection processing unit is specifically configured to set the priority of the enhanced cell to be higher than that of the traditional cell, and select the strongest cell in the enhanced cell; or set the priority of the traditional cell to the priority of the enhanced cell. The priority is high, and the strongest cell is selected in the traditional cell.
  • the selection processing unit is further configured to: when the strongest cell is not found in the enhanced cell, go to the traditional cell to find the strongest cell.
  • FIG. 8 is a schematic structural diagram of an embodiment of a base station according to the present invention. As shown in FIG. 8, the base station may include: a parameter setting unit 81 and a parameter sending unit 82;
  • the parameter sending unit 82 is configured to send the cell selection parameter to the UE, so that the UE determines, according to the parameter value, whether the enhanced cell is selected as the target cell.
  • the cell selection parameter set by the parameter setting unit 81 includes: a first parameter required by the cell selection criterion.
  • the cell selection parameter set by the parameter setting unit 81 includes: a second parameter required by the cell reselection criterion.
  • the parameter setting unit 81 is specifically configured to: when the UE is the UE of the first capability level, the parameter value set for the cell selection parameter is used to improve the UE selection as the target a threshold of a cell; when the UE is a UE of a second capability level, a parameter value set for the cell selection parameter is used to reduce a threshold for the UE to select the target cell; the first capability level is low At the second ability level.
  • the value of the priority parameter is 0 or 1;
  • FIG. 9 is a schematic structural diagram of an entity of an embodiment of a user equipment according to the present invention.
  • the user equipment includes a transmitter 91, a receiver 92, a memory 93, and a transmitter 91 and a receiver 92, respectively.
  • the processor 94 is coupled to the memory 93.
  • the user equipment may include a common component such as an antenna, a baseband processing component, a medium-frequency processing component, and an input/output device, and the embodiment of the present invention does not impose any limitation herein.
  • the memory 93 stores a set of program codes, and the processor 94 is configured to call the program code stored in the memory 93 for performing the following operations:
  • the parameter value is used to increase a threshold for the UE to select the cell as a target cell; if the UE is a UE of a second capability level, The parameter value is used to lower the threshold for the UE to select the cell as a target cell, where the first capability level is lower than the second capability level.
  • the priority parameter takes a first level value; if the UE is a UE of a second capability level, the priority parameter takes a second level. a value, wherein the first capability level is lower than the second capability level, and the first level value is lower than the second level value.
  • the priority parameter takes a first level value; if the capability level of the UE does not match the capability of the cell, The priority parameter takes a second level value, wherein the first level value is higher than the second level value.
  • the base station includes a transmitter 1001, a receiver 1002, a memory 1003, and a processor 1004 connected to the transmitter 1001, the receiving 1002, and the memory 1003, respectively.
  • the base station may include a common component such as an antenna, a baseband processing component, a medium-frequency processing component, and an input/output device, and the embodiment of the present invention does not impose any limitation herein.
  • the memory 1003 stores a set of program codes
  • the processor 1004 is configured to call the program code stored in the memory 1003 to perform the following operations:
  • the cell is referred to as a target cell.
  • the cell selection parameter includes: a first parameter required by a cell selection criterion; and/or a second parameter required by a cell reselection criterion.
  • the parameter value set by the processor 1004 for the cell selection parameter is used to increase the threshold for the UE to select the cell as the target cell;
  • the UE is a second capability level UE, and the parameter value set by the processor 1004 for the cell selection parameter is used to reduce the threshold for the UE to select the cell as a target cell; wherein the first capability The level is lower than the second ability level.
  • the cell selection parameter includes: a priority parameter corresponding to a capability level of the UE.
  • the priority parameter includes: a frequency priority corresponding to the frequency of the cell, or a cell priority corresponding to the cell, or a cell type priority corresponding to the type of the cell.
  • the processor 1004 sets a first level value and a second level value for the priority parameter, where the second level value corresponds to a UE whose capability level matches the capability of the cell, where the first The level value corresponds to a UE whose capability level does not match the capability of the cell; wherein the first level value is lower than the second level value.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un procédé de sélection de cellule, un équipement utilisateur (UE) et une station de base. Une station de base règle un paramètre de sélection de cellule envoyé à un UE à une valeur de paramètre correspondant à un niveau de capacité de l'UE, de manière que l'UE puisse sélectionner une cellule en fonction de la valeur de paramètre et que des UE ayant des niveaux de capacité différents aient des résultats de sélection différents, et en conséquence, différents types d'UE peuvent sélectionner, dans la mesure du possible, une cellule correspondant à leur fonction, ce qui permet d'améliorer le taux d'utilisation de ressources sans fil.
PCT/CN2013/075469 2013-05-10 2013-05-10 Procede de selection de cellule, equipement utilisateur et station de base Ceased WO2014179987A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201380002064.9A CN104365146B (zh) 2013-05-10 2013-05-10 小区选择方法、用户设备和基站
PCT/CN2013/075469 WO2014179987A1 (fr) 2013-05-10 2013-05-10 Procede de selection de cellule, equipement utilisateur et station de base
CN201810271015.XA CN108337716B (zh) 2013-05-10 2013-05-10 小区选择方法、用户设备和基站

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2013/075469 WO2014179987A1 (fr) 2013-05-10 2013-05-10 Procede de selection de cellule, equipement utilisateur et station de base

Publications (1)

Publication Number Publication Date
WO2014179987A1 true WO2014179987A1 (fr) 2014-11-13

Family

ID=51866648

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2013/075469 Ceased WO2014179987A1 (fr) 2013-05-10 2013-05-10 Procede de selection de cellule, equipement utilisateur et station de base

Country Status (2)

Country Link
CN (2) CN108337716B (fr)
WO (1) WO2014179987A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107534907A (zh) * 2015-03-06 2018-01-02 诺基亚通信公司 小区选择
WO2019065618A1 (fr) * 2017-09-29 2019-04-04 Nec Corporation Sélection de cellule fondée sur une capacité d'utilisateur
CN111713136A (zh) * 2020-05-07 2020-09-25 北京小米移动软件有限公司 信息传输方法、装置及通信设备
WO2022019817A1 (fr) * 2020-07-20 2022-01-27 Telefonaktiebolaget Lm Ericsson (Publ) Sélection de cellule avec récupération de couverture d'équipement d'utilisateur à capacité réduite
WO2022150912A1 (fr) * 2021-01-13 2022-07-21 Sierra Wireless, Inc. Procédé et appareil d'accès initial pour dispositifs à capacité réduite

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108235399B (zh) * 2016-12-22 2021-08-06 中国移动通信有限公司研究院 一种终端移动性管理的方法及装置
CN112584399B (zh) * 2019-09-30 2022-06-24 大唐移动通信设备有限公司 一种频点优先级配置方法、终端及网络设备
CN115052320B (zh) * 2021-03-08 2024-10-18 中国移动通信有限公司研究院 一种条件切换方法、装置和存储介质
WO2022198678A1 (fr) * 2021-03-26 2022-09-29 北京小米移动软件有限公司 Procédé et appareil de détermination de capacité, et procédé et appareil d'indication de capacité
ES3053351T3 (en) * 2021-07-02 2026-01-21 Guangdong Oppo Mobile Telecommunications Corp Ltd Communication method and apparatus
CN114554529B (zh) * 2022-04-21 2022-07-19 三峡智控科技有限公司 一种5g用户终端进行小区选择的智能优化方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102349328A (zh) * 2009-03-13 2012-02-08 高通股份有限公司 在第一资源重新选择失败的情况下的资源重新选择
WO2012160246A1 (fr) * 2011-05-20 2012-11-29 Nokia Corporation Informations de redirection préconfigurées

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100455112C (zh) * 2005-07-07 2009-01-21 华为技术有限公司 一种基于用户优先级的小区重选方法
CN100455124C (zh) * 2006-01-17 2009-01-21 华为技术有限公司 用户设备发起业务和选择小区的方法
CN101222759B (zh) * 2007-01-09 2012-07-25 华为技术有限公司 移动通信网络中小区重选方法、系统及终端
CN101365223B (zh) * 2007-08-09 2013-01-30 华为技术有限公司 长期演进系统中邻区测量、邻区选择的方法和装置
WO2009149600A1 (fr) * 2008-06-13 2009-12-17 Huawei Technologies Co., Ltd. Procédé d'équilibrage de charge dans un système de communication mobile
CN101631352B (zh) * 2008-07-15 2011-12-28 华为技术有限公司 基于电路交换的回退方法、系统、接入网设备及核心网设备
CN102984774B (zh) * 2012-12-10 2015-12-02 华为技术有限公司 减少不必要异系统小区切换的方法和网络设备

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102349328A (zh) * 2009-03-13 2012-02-08 高通股份有限公司 在第一资源重新选择失败的情况下的资源重新选择
WO2012160246A1 (fr) * 2011-05-20 2012-11-29 Nokia Corporation Informations de redirection préconfigurées

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107534907A (zh) * 2015-03-06 2018-01-02 诺基亚通信公司 小区选择
CN107534907B (zh) * 2015-03-06 2020-08-18 诺基亚通信公司 小区选择
WO2019065618A1 (fr) * 2017-09-29 2019-04-04 Nec Corporation Sélection de cellule fondée sur une capacité d'utilisateur
US11228971B2 (en) 2017-09-29 2022-01-18 Nec Corporation Cell selection based on user capability
US11871341B2 (en) 2017-09-29 2024-01-09 Nec Corporation Cell selection based on user capability
US12342274B2 (en) 2017-09-29 2025-06-24 Nec Corporation Cell selection based on user capability
CN111713136A (zh) * 2020-05-07 2020-09-25 北京小米移动软件有限公司 信息传输方法、装置及通信设备
WO2021223163A1 (fr) * 2020-05-07 2021-11-11 北京小米移动软件有限公司 Procédé et appareil de transmission d'informations, et dispositif de communication
WO2022019817A1 (fr) * 2020-07-20 2022-01-27 Telefonaktiebolaget Lm Ericsson (Publ) Sélection de cellule avec récupération de couverture d'équipement d'utilisateur à capacité réduite
US12574837B2 (en) 2020-07-20 2026-03-10 Telefonaktiebolaget Lm Ericsson (Publ) Cell selection with coverage recovery for reduced capability user equipment
WO2022150912A1 (fr) * 2021-01-13 2022-07-21 Sierra Wireless, Inc. Procédé et appareil d'accès initial pour dispositifs à capacité réduite

Also Published As

Publication number Publication date
CN104365146B (zh) 2018-04-20
CN108337716A (zh) 2018-07-27
CN104365146A (zh) 2015-02-18
CN108337716B (zh) 2021-06-22

Similar Documents

Publication Publication Date Title
WO2014179987A1 (fr) Procede de selection de cellule, equipement utilisateur et station de base
JP6479920B2 (ja) マルチ周波数ネットワークにおけるｅｍｂｍｓサービスのアクティブ化およびメンテナンスプロシージャ
CN108683474B (zh) 传输公共信号的方法及其装置
CN104349504B (zh) 使用者设备及其装置对装置通讯选择方法
TWI586121B (zh) 用以管理用於無線通訊器件中多用戶身份之資料連結的方法及裝置
JP2017530625A (ja) 相関ビットマップを用いたｅＭＢＭＳネイバーＳＡＩ情報の導出
JP2014532372A (ja) ユーザ機器及び無線ネットワークノード、並びにそれらにおけるデバイスツーデバイス通信のための方法
CN101674626A (zh) 基地台、行动台以及基地台、行动台及通讯网络运作方法
TWI710271B (zh) 用於設備到設備發送和接收的頻率決定
CN112544107A (zh) 无sib1的nr小区的cgi报告过程
WO2014201689A1 (fr) Procédé et dispositif de traitement d'accès d'un dispositif de communication, et système de communication
WO2016141752A1 (fr) Procédé de sélection de cellule, procédé de configuration anr, dispositif, et support de stockage informatique
WO2017219363A1 (fr) Procédé de transmission d'informations, et dispositif de transmission d'informations
WO2014206201A1 (fr) Procédé de réseautage centralisé et dispositif terminal
WO2023011424A1 (fr) Procédé de communication par relais, appareil de communication et système de communication
US20220400414A1 (en) Ue group based cell reselection
WO2017028592A1 (fr) Procédé d'indication de capacité, procédé d'établissement d'itinéraire, terminal mobile, et dispositif de réseau
WO2014117322A1 (fr) Procédé de synchronisation et station de base
CN102857982B (zh) 接入处理方法及装置
JP6487465B2 (ja) デバイス・ツー・デバイス通信を改善するための方法、改善されたデバイス・ツー・デバイス通信に適合されるユーザ装置、デバイス・ツー・デバイス通信を改善するためのシステム及び移動通信ネットワーク、プログラム及びコンピュータプログラム製品
WO2015003613A1 (fr) Procédé et dispositif de transmission d'informations et de recherche de cellules
TWI594653B (zh) A method and apparatus for detecting the proximity of a user's device
WO2015042966A1 (fr) Procédé, appareil et système d'établissement d'une liaison de raccordement
JP6433433B2 (ja) 通信制御方法及び基地局
WO2018095425A1 (fr) Procédé et dispositif d'acquisition d'informations de configuration de synchronisation de mesure de signaux de découverte (dmtc) concernant une cellule voisine

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 13884328

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 13884328

Country of ref document: EP

Kind code of ref document: A1