TW201927044A - Method in UE of wireless communication system, method in wireless base station of wireless communication system and UE - Google Patents

Abstract

A method in a user equipment, UE, (100) of radio communications system (10) and a method in a base station of radio communications system (10) and UE are provided. A method in a user equipment, UE, (100) of radio communications system (10) of combining a plurality of items of control information received with regard to a plurality of monitoring resources for a remaining minimum system information, RMSI, the method comprising: receiving the plurality of items of control information, wherein each item of the plurality of items control information corresponds to a different resource of on the plurality of monitoring resources (230); and combining the plurality of items of control information, wherein each item of control information of the plurality of items of control information is transmitted using a same at least one transmission parameter.

Description

Method in user equipment of wireless communication system, method in wireless base station of wireless communication system, and user equipment

The present invention relates generally to the field of wireless access networks and, more particularly, to the transmission of system information in a wireless access network. More specifically, an exemplary aspect of the present invention relates to a method for merging a plurality of remaining system information (RMSI) PDCCHs transmitted in a radio access network, user equipment (UE), and wireless Radio base station (gNB).

As a new fifth-generation (new 5 ^th generation, 5G) part of the mobile communication standard, the third generation of global Partner Program (3GPP) is developing 5G wireless access technology, known as the new radio (new radio, NR). 5G NR is designed to solve a variety of usage scenarios, from enhanced mobile broadband (eMBB) to ultra-reliable low-latency communications (URLC) to mass machine type communication (massive machine) Type communications, MMTC), and significantly improve the performance, flexibility, scalability and efficiency of today's mobile networks. Key NR features include ultra lean transmission, support for low latency, advanced antenna technology, and spectrum flexibility, including operation in high frequency bands, interoperability between high and low frequency bands (inter- Working) and dynamic time division multiplexing (TDD).

In order to access the 5G network, the UE must receive and decode system information (SI) broadcast by the radio base station (gNB) of the cell in which the UE is located. In the final report of the 3GPP TSG RAN WG 2 (3rd Generation Partnership Project Technical Specification Group Radio Access Network Working Group 2) meeting #95, it is decided to divide the system information into "minimum system information" and "other system information" that are always broadcast, "other The system information can be configured to be broadcast to the UE or to the UE as needed. The minimum system information can be divided into a master information block (MIB) and a remaining minimum system information (RMSI). It is agreed that the minimum system information includes at least information required by the UE to support cell selection, acquire further SI, and access the cell. Provided in R1–1701519 “Response LS on minimum system information”, RAN WG2, January 2017, and the final report of 3GPP TSG RAN WG1 meeting #89 (Section 7.1.1.2) More detailed information.

Furthermore, as disclosed in 3GPP TSG RAN W1 Conference 90bis R1-1717927, it has been agreed between the 3GPP working groups that at least part of the minimum system information should be carried on a public broadcast channel (PBCH). Due to the relative size of the minimum system information and the payload size of the PBCH, the PBCH only carries very basic system information. Therefore, it is further agreed that the minimum system information portion (about 200 bits) that is not carried on the NR-PBCH should be transmitted as the remaining minimum system information (RMSI). The RMSI may include some or all of the Random Access Channel (RACH) configuration information as well as an indication of the actual transmitted signal synchronization (SS) block. It is recommended that in addition to the information provided by the NR-PBCH, the RMSI should additionally include any other information the UE needs to camp on the cell.

The RMSI is carried by a Physical Downlink Shared Channel (PDSCH). More generally, the PDSCH is used to carry downlink (DL) user profiles, UE-specific high-level information, system information, and paging. The PDSCH is scheduled using a Physical Downlink Control Channel (PDCCH), which is used to carry control information items, such as downlink scheduling assignments and uplink scheduling grants. Since the RMSI is intended to be broadcast, all UEs in the cell should be able to decode the relevant control information items for the PDCCH bearer for RMSI scheduling. Therefore, the PDCCH for RMSI scheduling should be carried in a common search space (CSS), that is, one region in the downlink resource grid and a part of the entire PDCCH search space, where all UEs can be shared. Control information item.

The position in the CSS is provided in the form of a control channel element (CCE) index. 5G/New Radio (5G/NR) introduces many new resource configuration units. A resource element (RE) is a minimum unit of a resource grid composed of one subcarrier in the frequency domain and one OFDM symbol in the time domain. A resource element group (REG) consists of one resource block (ie, 12 resource elements in the frequency domain) and one OFDM symbol in the time domain. Finally, the Control Channel Element (CCE) consists of multiple REGs.

The transmission parameters of the PDCCH for RMSI scheduling may include the following: • Aggregation level: The aggregation level indicates how many Control Channel Elements (CCEs) are allocated for the PDCCH. • Control Resource Set (CORESET): CORESET consists of multiple resource blocks in the frequency domain and 1 to 3 OFDM symbols in the time domain. The PDCCH channel is limited to one CORESET. Therefore, depending on the aggregation level, the CCE to REG mapping of CORESET may vary. • PDCCH candidate: Each possible location in the downlink resource grid in which the UE may discover its PDCCH is referred to as a candidate. All possible PDCCH candidates constitute the PDCCH search space. Each candidate corresponds to CORESET, and the candidate location is defined as a CCE index (the CCE number of the assigned PDCCH). • Search space: An area of the downlink resource grid that can carry one or more PDCCHs. The PDCCH for RMSI scheduling is carried in the Common Search Space (CSS) of the PDCCH search space. However, depending on the level of aggregation, the common search space may have different candidates or different numbers of candidates. • Transmission slot index (TSI): The slot index within the frame. The slot includes 14 OFDM symbols whose duration depends on the frequency.

In addition to the first part of the minimum system information, the scheduling information of the PDCCH corresponding to the PDSCH carrying the RMSI is also carried in the PBCH. Therefore, the master information block (MIB) carried by the PBCH includes parameters indicating the bandwidth of the PDCCH/SIB (system block), the CORESET, the common search space, and the necessary PDCCH parameters, so that the UE in the cell can The control information item carried by the PDCCH is accessed to access the RMSI.

During DL transmission, the sync signal and the blocks of the PBCH are packed into a single block and are always transmitted together. This block is called a sync/PBCH (SS/PBCH) block. The SS/PBCH block is transmitted in a periodic burst.

As discussed in more detail in 3GPP TSG RAN W1 Conference 90bis R1-1717032, some form of association is required between the SS/PBCH block providing scheduling information for the PDCCH and the corresponding RMSICORESET of the PDCCH having scheduling information for the PDCCH carrying the RMSI, Because there may not be enough time resources to transmit the RMSI CORESET in the same time slot as the SS/PBCH block. Each SS/PBCH block may be associated with a set (multiple entries) RMSI CORESET, ie, multiple candidate locations in a DL resource grid, where a PDCCH may be carried, the PDCCH carrying a scheduling for PDSCH carrying RMSI News. When the UE successfully receives the PBCH in a particular SS/PBCH block, the UE will blindly detect (monitor) the RMSI PDCCH in the associated set of RMSI CORESETs indicated by the PBCH. RMSI CORESET can deviate from the SS/PBCH block in the frequency domain.

It has been agreed in Section 7.1.2.2 of the Last Record Report of the 3GPP TSG RAN W1 Conference 90bis that there is an RMSI PDCCH monitoring window associated with the SS/PBCH block, which is periodically repeated. The control information items carried on the PDCCH for scheduling the RMSI and received by the UE may correspond to one or more specific respective monitoring windows. Furthermore, each control information item carried on the PDCCH for scheduling the RMSI and received by the UE may correspond to a particular SS/PBCH block in the periodic SS/PBCH burst set. Further, each control information item carried on the PDCCH for scheduling the RMSI and received by the UE may correspond to a specific transmission time interval (TTI).

The monitoring resource may be defined as an item indicating a time or frequency resource in the DL resource grid, and a control information item carried on the PDCCH for scheduling the RMSI and received by the UE may correspond to the object. The monitoring resources may include an RMSI physical downlink control channel, a PDCCH, a monitoring window, an RMSI PDCCH transmission time interval TTI, and/or an SS/PBCH block within a Synchronization Signal Physical Broadcast Channel (SS/PBCH) burst.

The inventors have recognized that based on current protocols, control information items for RMSI scheduling (RMSI PDCCH) transmitted on the PDCCH corresponding to different monitoring resources can be transmitted with different transmission parameters (by way of non-limiting example, different Aggregation level, different PDCCH candidates or different search spaces). This difference in transmission parameters may be disadvantageous because the RMSI PDCCHs of different monitoring resources cannot be combined to improve the RMSI PDCCH detection performance.

In view of these limitations, the inventors have devised a method in a user equipment UE of a wireless communication system. The method comprises the steps of: receiving a plurality of control information items carried on respective PDCCHs for scheduling remaining minimum system information RMSI, the PDCCHs being received on a plurality of monitoring resources, wherein the plurality of control information items At least two of the two correspond to different respective resources; and merge the plurality of control information items, wherein the plurality of control information items are transmitted using the same at least one transmission parameter.

The inventors have also devised a method in a wireless base station gNB of a wireless communication system. The method includes the steps of transmitting a plurality of control information items on a corresponding PDCCH for scheduling remaining minimum system information RMSI, the PDCCH being transmitted on a plurality of monitoring resources, wherein at least one of the plurality of control information items The two correspond to different respective resources, wherein the same at least one transmission parameter is used to transmit a plurality of control information items.

The inventors have also devised a computer program including instructions for causing a computer to perform the above method when executing an instruction.

The inventors have also devised a non-transitory computer readable storage medium storing the above computer program.

The inventors have also devised a signal carrying the above computer program.

The inventors have also devised a corresponding user equipment UE and a corresponding wireless base station gNB.

Preferred embodiments are defined in the respective dependent claims.

Example embodiments of the present invention will now be described in detail with reference to the drawings.

The technical significance of the drawings, the detailed description, or the claims is to be followed by the appended claims. Therefore, the reference signs and their deficiencies do not limit the scope of any claim elements.

Embodiments of the present invention disclose at least the following solutions:

Solution 1. A method in a UE of a user equipment of a wireless communication system, the method comprising: receiving a plurality of control information items carried on respective PDCCHs for scheduling remaining minimum system information RMSI, the PDCCH being Received on the monitoring resource, wherein at least two of the plurality of control information items correspond to different respective resources; and merge (S12) the plurality of control information items, wherein the same At least one transmission parameter to transmit the plurality of control information items.

The method of claim 1, wherein the plurality of monitoring resources comprise at least two of: an RMSI physical downlink control channel PDCCH monitoring window, an RMSI PDCCH transmission time interval TTI, and synchronization The SS/PBCH block in the signal physical broadcast channel SS/PBCH burst.

The method of claim 1 or 2, wherein the at least one transmission parameter comprises at least one of: an aggregation level; a PDCCH candidate; a search space; an RMSI PDCCH control resource set; a control resource set CORESET; Slot index.

The method of any of aspects 1 to 3, wherein the at least one transmission parameter comprises a plurality of transmission parameters.

The method of claim 4, wherein the plurality of transmission parameters comprises an aggregation level, a PDCCH candidate, a search space, an RMSI PDCCH control resource set, a CORESET, and a transmission slot index.

The method of any one of aspects 1 to 5, further comprising: receiving a value indicating whether to use the same at least one transmission parameter.

The method of claim 6, further comprising: merging the plurality of control information items using the same at least one transmission parameter.

The method of any of clauses 6 to 7, wherein the value is a single bit value received on a physical broadcast channel PBCH.

The method of any of clauses 1 to 5, wherein the value of the at least one transmission parameter is set to a respective predetermined value of all monitored resources.

Solution 10. A method in a radio base station gNB of a wireless communication system, comprising: transmitting a plurality of control information items on a corresponding PDCCH for scheduling remaining minimum system information RMSI, the PDCCH being Transmitted, wherein at least two of the plurality of control information items correspond to different respective resources, wherein the plurality of control information items are transmitted using the same at least one transmission parameter.

The method of claim 10, further comprising transmitting a value indicating whether to use the same at least one transmission parameter.

Item 12. A computer program comprising instructions which, when executed, cause a computer to perform the method of any of aspects 1 to 11.

Item 13. A non-transitory computer readable storage medium storing the computer program according to aspect 12.

Scheme 14. A signal that executes the computer program according to aspect 12.

A user equipment UE for a wireless communication system, comprising: a receiving unit, the receiving unit configured to receive a plurality of control information items carried on a corresponding PDCCH for scheduling remaining minimum system information RMSI, The PDCCH is received on a plurality of monitoring resources, wherein at least two of the plurality of control information items correspond to different respective resources; and a control unit configured to merge A plurality of control information items are described, wherein the plurality of control information items are transmitted using the same at least one transmission parameter.

The user equipment of claim 15, wherein the plurality of monitoring resources comprise at least two of: an RMSI physical downlink control channel PDCCH monitoring window, an RMSI PDCCH transmission time interval TTI, and SS/PBCH block in the sync signal physical broadcast channel SS/PBCH burst.

The user equipment of claim 15 or 16, wherein the at least one transmission parameter comprises at least one of: an aggregation level; a PDCCH candidate; a search space; an RMSI PDCCH control resource set; a control resource set CORESET; And transmitting the slot index.

The user device of any of aspects 15 to 17, wherein the at least one transmission parameter comprises a plurality of transmission parameters.

The user equipment of claim 18, wherein the plurality of transmission parameters comprises an aggregation level, a PDCCH candidate, a search space, an RMSI PDCCH control resource set, a CORESET, and a transmission slot index.

The user device of any one of aspects 15 to 19, wherein the receiving portion is further configured to receive a value indicating whether to use the same at least one transmission parameter.

The user device of claim 20, wherein the control portion is further configured to merge the plurality of control information items only if the same at least one transmission parameter is used.

The user equipment of any one of aspects 20 to 21, wherein the value is a single bit value received on a physical broadcast channel PBCH.

The user equipment of any of clauses 15 to 19, wherein the value of each of the at least one transmission parameter is set to a respective predetermined value of all monitored resources.

A user equipment UE, comprising: a memory; and a processor, wherein the memory stores one or more computer programs, when the one or more computer programs are executed by the processor, The processor is caused to perform the operations of any of the schemes 1 to 9.

A wireless base station gNB for a wireless communication system, comprising: a transmitting unit configured to transmit a plurality of control information items on a corresponding PDCCH for scheduling remaining minimum system information RMSI, the PDCCH Transmitting on a plurality of monitoring resources, wherein at least two of the plurality of control information items correspond to different respective resources, wherein the plurality of the same at least one transmission parameter is used to transmit the plurality of Control information items.

The radio base station of claim 24, wherein the transmitting portion is further configured to transmit a value indicating whether to use the same at least one transmission parameter.

A wireless base station gNB, comprising: a memory; and a processor, wherein the memory stores one or more computer programs when the one or more computer programs are executed by the processor The processor is caused to perform the operations of any of the schemes 10 to 11.

[First Exemplary Embodiment]

1 is a schematic diagram of a wireless communication system 10 in accordance with an exemplary aspect of the present invention. The wireless communication system 10 includes a User Equipment (UE) 100 and a wireless base station 200. The UE 100 performs wireless communication with the wireless base station 200. In the present embodiment, the radio base station 200 may be a 5G gNB (Next Generation NodeB). The wireless base station 200 provides access to the wireless communication network for the UE 100 in the cell 300, for example via beamforming. In the example shown in FIG. 1, wireless base station 200 serves a single UE 100. However, in an alternate embodiment, the wireless base station 200 can provide services to multiple UEs.

In order to access the network, the UE 100 can receive and decode system information (SI) transmitted by the radio base station 200, including in particular the RMSI broadcast by the radio base station 200 on the PDSCH.

In order to receive the RMSI, the UE 100 may receive and decode scheduling information of a PDCCH corresponding to the PDSCH carrying the RMSI. The scheduling information is transmitted on the PBCH. The UE 100 may also receive and decode related control information items for RMSI scheduling (RMSI PDCCH) carried by the PDCCH.

If the channel quality on the PDCCH is sufficiently high when the radio base station 200 transmits the control information item, the UE 100 should be able to correctly receive and decode the control information items transmitted by the radio base station 200 on the PDCCH. That is, by way of non-limiting example, the UE 100 should use the error correction code included in the coding control information for the PDCCH by the radio base station 200 to correct any transmission errors.

However, if the channel quality is poor (eg, due to interference), the UE 100 may not be able to correct all transmission errors in the control information items transmitted on the PDCCH. In this case, the UE 100 will not be able to correctly decode the control information items transmitted on the PDCCH and, therefore, will not be able to receive the RMSI. In this way, the UE 100 will be blocked from accessing the network.

However, although the two given control information items received by the UE 200 cannot be decoded independently without error, the merging of two such control information items with transmission errors may provide sufficient information to allow the UE 100 to correctly decode. These control information items. More generally, many error correction methods rely on combining two or more instances of receiving information, such as controlling information items, to allow for proper decoding of instances of the received information.

Therefore, the UE can combine the control information items received on the RMSI PDCCH to improve the RMSI PDCCH detection performance.

As described above, the control information items received by the UE 100 on the PDCCH and transmitted by the radio base station 200 correspond to the monitoring resources (associated with the monitoring resources). 2 is a schematic diagram showing a monitoring resource 230 and a plurality of control information items in accordance with example aspects of the present invention.

In this embodiment, the monitoring resource 230 may be an RMSI PDCCH monitoring window 230 associated with the SS/PBCH block 210a, which periodically appears repeatedly. In the example of FIG. 2, the UE receives a control information item carried on the PDCCH for scheduling the RMSI in the CORESET 215. The control information item and thus the CORESET 215 may correspond to one or more particular respective monitoring windows 230. In the example of FIG. 2, each SS/PBCH block burst set 220 includes two SS/PBCH blocks 210. Alternatively, each SS/PBCH block burst set may include three or more SS/PBCH blocks.

Each monitoring window 230 can have a duration 235 of x consecutive time slots. For example, duration 235 can be 1, 2, or 4 time slots, and the value of x can be band dependent and/or configured in the PBCH. In the present embodiment, the starting point of the monitoring window 230 may deviate from the starting point of the SS/PBCH block 210a by a predetermined value 240 in time. Alternatively, the starting point of the monitoring window 230 may not be temporally offset from the starting point of the SS/PBCH block 210a.

In this embodiment, the period 245 y of the monitoring window may be the same as the period 225 of the SS/PBCH block burst set 220. Alternatively, the period 245 of the monitoring window may be different from the period 225 of the SS/PBCH block burst set. The value y of period 245 can be, for example, between 10 ms and 160 ms. The value y of the period 245 may be any one of 10 ms, 20 ms, 40 ms, 80 ms, or 160 ms. Period 245 may be band dependent, configured in the PBCH and/or dependent on the RMSI Transmission Time Interval (TTI). Typically, the transmission time interval is the duration of the data block being transmitted over the wireless link. In the present invention, the RMSI TTI for downward selection may be 80 ms or 160 ms.

As described above, the monitoring resource may be defined as an item indicating a time or frequency resource in the DL resource grid, and a control information item carried on the PDCCH for scheduling the RMSI and received by the UE may correspond to the object. The monitoring resource 230 may include an RMSI physical downlink control channel PDCCH, a monitoring window 230, an RMSI PDCCH transmission time interval TTI, and/or a synchronization signal physical broadcast channel (SS/PBCH) block 210 within the SS/PBCH burst 220.

That is, each control information item carried on the PDCCH and CORESET 215 received by the UE may correspond to a specific corresponding monitoring window 230. Moreover, each control information item 215 carried on the PDCCH for scheduling the RMSI and received by the UE may correspond to a particular one of the periodic SS/PBCH burst sets 220. Further, each control information item 215 carried on the PDCCH for scheduling RMSI and received by the UE may correspond to a specific transmission time interval (TTI).

Furthermore, as described above, there may be some form between the SS/PBCH block 210a providing scheduling information of the PDCCH and the corresponding RMSI CORESET 215 of the PDCCH having scheduling information (ie, control information items) of the PDSCH carrying the RMSI. Association. This may be desirable when the time resources are not sufficient to allow the RMSI CORESET 215 to be transmitted in the same time slot as the SS/PBCH block 210a.

In the example of FIG. 2, each SS/PBCH block 210a, 210b, 210c, 210d is shown in association with a single RMSI CORESET 215. However, each SS/PBCH block 210 may also be associated with a set of RMSI CORESET (multiple RMSI CORESET terms) 215, ie, multiple candidate locations in the DL resource grid, multiple candidate locations may carry PDCCH, the PDCCH The scheduling information for the PDSCH is carried, and the PDSCH is used to carry the RMSI. When the UE successfully receives the PBCH in the particular SS/PBCH block 210, the UE will blindly detect (monitor) the RMSI PDCCH in the associated set of RMSI CORESETs 215 indicated by the PBCH.

3 is a diagram showing an example of an association between an SS/PBCH block 210 (210a-201c) providing scheduling information of a PDCCH and a corresponding RMSI CORESET 215 of the PDCCH having scheduling information of a PDSCH carrying RMSI. As shown in example (a) of FIG. 3, the RMSI CORESET 215a may be offset from the SS/PBCH block 210a in the time domain and the frequency domain. Alternatively, as shown in example (b) of FIG. 3, the RMSI CORESET 215b may be offset from the SS/PBCH block 210b only in the time domain. Alternatively, as shown in example (c) of FIG. 3, the RMSI CORESET 215b may be offset from the SS/PBCH block 210b only in the frequency domain.

In the examples (a)-(c) shown in FIG. 3, there is a one-to-one association between each SS/PBCH block 210 and the corresponding RMSI CORESET 220. Alternatively, there may be a many-to-one association between multiple SS/PBCH blocks 210 and a single respective RMSI CORESET 220. From the perspective of the UE 100, this many-to-one association can be manifested as a one-to-one association between the SS/PBCH block 210 and the corresponding RMSI CORESET 220. By way of further substitution, there may be a one-to-many association between a single SS/PBCH block 210 and a plurality of corresponding RMSI CORESETs 220.

The inventors have recognized that based on current protocols, control information items transmitted on the PDCCH for RMSI scheduling (RMSI PDCCH) corresponding to different monitoring resources may be transmitted with different transmission parameters. That is, between control information items associated with different monitoring windows and/or between control information items associated with different SS/PBCH blocks in a periodic SS/PBCH burst set and/or at different transmission time intervals The transfer parameters can be different.

In general, these parameters may relate to the manner in which resources in the resource grid (in terms of frequency and time) are allocated for transmission on the PDCCH. By way of non-limiting example, the transmission parameters of the PDCCH for RMSI scheduling may include the following: • aggregation level • PDCCH candidate • search space • control resource set (CORESET) • This difference in the transmission slot index transmission parameters may be Disadvantageous, because it is not possible to combine control information items transmitted using different transmission parameters, or to combine control information items transmitted using different transmission parameters may require excessive time or processing resources representing the UE 100. Such control information items received on different monitoring resources cannot be combined to improve RMSI PDCCH detection performance.

4 is a flow chart showing a process according to an exemplary aspect of the present invention, by which the user equipment 100 of FIG. 1 combines a plurality of control information items received on a plurality of monitoring resources of remaining minimum system information RMSI. .

In process S210, the UE 100 receives a plurality of control information items, wherein each of the plurality of control information items corresponds to a different resource on the plurality of monitoring resources 230.

Each of the plurality of control information items is transmitted using the same at least one transmission parameter. That is, each control information item received may be transmitted with the same transmission parameter, and for each of the plurality of monitoring resources 230, at least one of the same transmission parameters of the corresponding control information item has the same value. For example, the first RMSI PDCCH in the first monitoring window and the second RMSI PDCCH in the (subsequent) second monitoring window are transmitted by using the same transmission parameters (eg, the same CORESET), which allows for merging The two control information items of the RMSI are scheduled to improve the detection performance.

Further for example, the at least one transmission parameter may be an aggregation level, and for each of the plurality of monitoring resources 230, the aggregation level of the PDCCH that receives the RMSI scheduling of the corresponding control information item may be 8.

In this embodiment, the at least one transmission parameter may comprise a plurality of transmission parameters. In this embodiment, the plurality of transmission parameters may include an aggregation level, a PDCCH candidate, a search space, an RMSI PDCCH control resource set, a CORESET, and a transmission slot index.

Alternatively, in this embodiment, the UE 100 may receive a value indicating whether the same at least one transmission parameter is used. In this embodiment, the value may be a single bit value received on the physical broadcast channel PBCH.

That is, in this embodiment, the UE may receive on the PBCH whether the RMSI PDCCH of the different RMSI PDCCH monitoring window is used and/or the different TTI and/or RMSI corresponding to different SS/PBCH blocks in one SS/PBCH burst set. An indication of the transmission parameter of the RMSI PDCCH of the PDCCH. These parameters include at least an aggregation level and/or PDCCH candidate and/or search space and/or an RMSI PDCCH CORESET and/or a transmission slot index.

In this embodiment, the indication may be provided to the UE as a single bit in the PBCH payload. If the value of this bit is set to "1", the exact same (ie, identical) transmission parameters are used for the RMSI PDCCH of the different RMSI PDCCH monitoring window and/or the different SS/ corresponding to one SS/PBCH burst set. Different TTIs of PBCH blocks and/or RMSI PDCCHs of RMSI PDCCHs. In this case, as described above, the UE may have different RMSI PDCCHs in different monitoring windows and/or different TTIs and/or RMSI PDCCHs corresponding to different SS/PBCH blocks in one SS/PBCH burst set. Perform PDCCH combining.

Otherwise, if the value of the bit is set to "0", the different transmission parameters are used for the RMSI PDCCH of the different monitoring windows and/or different TTIs and/or different TSIs corresponding to different SS/PBCH blocks in one SS/PBCH burst set. RMSI PDCCH of the RMSI PDCCH. In this case, the UE may not perform between different RMSI PDCCHs of different monitoring windows and/or RMSI PDCCHs corresponding to different TTIs and/or RMSI PDCCHs of different SS/PBCH blocks in one SS/PBCH burst set. PDCCH merge.

Therefore, the UE 100 receives a value indicating whether to use the same at least one transmission parameter, and may allow the UE 100 to combine multiple control information items in some cases while maintaining the flexibility of transmission parameter selection because at least one of the same at least one is used. The transmission parameters can be signaled to the UE 100.

In an alternative embodiment, the value of each of the at least one transmission parameter may be set to a respective predetermined value for all of the monitored resources.

For example, the RMSI PDCCH of different RMSI PDCCH monitoring windows and/or the transmission parameters of the RMSI PDCCH corresponding to different TTIs and/or RMSI PDCCHs of different SS/PBCH blocks in one SS/PBCH burst set are specified in the specification. The same transmission parameters, for example, the same aggregation level and/or the same PDCCH candidate and/or the same search space and/or the same RMSI PDCCH CORESET and/or the same transmission slot index. In this way, it can be guaranteed that the UE can perform PDCCH between different RMSI PDCCHs of different monitoring windows and/or RMSI PDCCHs corresponding to different TTIs and/or RMSI PDCCHs of different SS/PBCH blocks in one SS/PBCH burst set. Merger, as described above.

In process S212 of FIG. 4, the UE merges a plurality of control information items. As described above, the UE can improve the RMSI PDCCH detection performance by combining a plurality of control information items corresponding to a plurality of monitoring resources.

[Second exemplary embodiment]

5 is a flow diagram showing a process in accordance with an exemplary aspect of the present invention by which the wireless base station 200 of FIG. 1 transmits a plurality of control information items for remaining minimum system information RMSI.

In the process S20 of FIG. 5, the radio base station 200 sets the same at least one transmission parameter for each of the plurality of control information items to be transmitted, so that the plurality of control information items can be combined.

That is, each control information item to be transmitted may have at least one transmission parameter that is the same transmission parameter and has the same value for all control information items to be transmitted. By way of non-limiting example, the at least one parameter may be an aggregation level, and the aggregation level may be set to 8 for a control information item among a plurality of control information items to be transmitted. The at least one transmission parameter may be, for example, any one of: an aggregation level; a PDCCH candidate; a search space; an RMSI PDCCH control resource set; a CORESET; and a transmission slot index.

In this embodiment, the at least one transmission parameter may comprise a plurality of transmission parameters. The plurality of transmission parameters may include an aggregation level, a PDCCH candidate, a search space, an RMSI PDCCH control resource set, a CORESET, and a transmission slot index.

In this embodiment, the wireless base station 200 can set the same at least one transmission parameter for each of the plurality of control information items transmitted only for certain of the plurality of control information items to be transmitted. The plurality of control information items to be transmitted by the radio base station for performing the process S20 may be based on, for example, the UE by the radio base station 200 to provide network access or network traffic to the radio base station 200. The corresponding capabilities (including UE 100) are determined.

The wireless base station 200 can set different values for at least one identical transmission parameter of different control information items to be transmitted, the value of the at least one transmission parameter being the same for each item of a given plurality of control information items to be transmitted of.

In this case, in the present embodiment, the radio base station 200 can transmit a value indicating whether to use the same at least one transmission parameter. In this embodiment, the wireless base station 200 can transmit the value prior to transmitting a plurality of control information items to be transmitted. Alternatively, the wireless base station 200 can transmit the value while transmitting a plurality of control information.

Similar to the discussion above regarding UE 100, the value transmitted by wireless base station 200 may be a single bit value transmitted on the physical broadcast channel PBCH.

In an alternate embodiment, the value of each of the at least one transmission parameter may be set to a respective predetermined value for all of the monitoring resources 230. For example, it may be specified in the specification that the transmission parameters of the RMSI PDCCH use the same transmission parameters, eg, the same aggregation level and/or the same PDCCH candidate and/or the same search space and/or the same RMSI PDCCH CORESET and / or the same transmission slot index.

In process S22 of FIG. 3, the radio base station 200 transmits a plurality of control information items to be received on the plurality of monitoring resources 230 for the remaining minimum system information RMSI.

In this embodiment, multiple control information items may be transmitted on the physical downlink control channel PDCCH. The wireless base station 200 can transmit a plurality of control information items to one or more UEs (including the UE 100) in the cell 300 and serving the wireless base station 200.

The wireless base station 200 transmits each of the plurality of control information items using the same at least one transmission parameter such that one or more UEs receiving the plurality of control information items can combine the plurality of control information items.

FIG. 6 is a block diagram showing an example signal processing hardware setting 600 of the user device 100 of FIG. 1 in accordance with an example embodiment of the present invention. In the present embodiment, the programmable signal processing hardware 600 of FIG. 6 can be configured to function as the UE 100 of FIG. It should be noted, however, that device 600 may alternatively be implemented in a non-programmable hardware (eg, an application integrated circuit (ASIC)) or in any other suitable manner, using any suitable combination of hardware and software components. The UE is comprised of processing and communication functions required to operate in accordance with one or more conventional telecommunications standards including, but not limited to, GSM, PCS, 3GPP, LTE, LTE-A, UMTS, 3G, 4G, 5G.

The programmable signal processing hardware 600 includes a transmit/receive portion 610 and one or more antennas 605. The signal processing device 600 also includes a control portion (for example, a processor, such as a central processing unit CPU or a graphics processing unit GPU) 620, a working memory 630 (eg, random access memory), and a computer readable instruction. The instruction memory 640, when executed by the control unit 620, causes the processor 620 to perform the functions of the UE of FIG.

The instruction memory 640 can include a ROM (eg, in the form of an electrically erasable programmable read only memory (EEPROM) or flash memory) preloaded with computer readable instructions. Alternatively, the instruction memory 640 may include RAM or a similar type of memory, and computer readable instructions of the computer program may be input into the computer program product, for example, a non-transitory computer in the form of a CD-ROM, a DVD-ROM, or the like. The storage medium 650 or computer readable signal 660 carrying computer readable instructions is read.

FIG. 7 is a block diagram showing an example signal processing hardware setting 700 of the wireless base station 200 of FIG. 1 in accordance with an example embodiment of the present invention. As in the present exemplary embodiment, the programmable signal processing hardware 700 of FIG. 4 can be configured to function as the wireless base station 200 of FIG. It should be noted, however, that device 700 may alternatively be implemented in a non-programmable hardware (eg, an application integrated circuit (ASIC)) or in any other suitable manner, using any suitable combination of hardware and software components. The wireless base station is comprised of processing and communication functions required to operate in accordance with one or more conventional telecommunications standards, including but not limited to GSM, PCS, 3GPP, LTE, LTE-A, UMTS, 3G, 4G, 5G.

The programmable signal processing hardware 700 includes a transmit/receive portion 710 and one or more antennas 705. The signal processing device 700 also includes a network communication interface 715, a control portion (for example, a processor such as a central processing unit CPU or a graphics processing unit GPU) 720, a working memory 730 (eg, random access memory), and The instruction memory 740, which stores computer readable instructions, causes the processor 720 to perform the functions of the wireless base station 200 of FIG. 1 when executed by the control unit 720.

The instruction memory 740 can include a ROM (e.g., in the form of an electrically erasable programmable read only memory (EEPROM) or flash memory) preloaded with computer readable instructions. Alternatively, the instruction memory 740 may include RAM or a similar type of memory, and computer readable instructions of the computer program may be input into the computer program product, for example, a non-transitory computer in the form of a CD-ROM, a DVD-ROM, or the like. The storage medium 750 or computer readable signal 760 carrying computer readable instructions is read.

10‧‧‧Wireless communication system

100‧‧‧User equipment

200‧‧‧Wireless base station

300‧‧‧Community

210a‧‧‧SS/PBCH block

210b‧‧‧SS/PBCH block

210c‧‧‧SS/PBCH block

210d‧‧‧SS/PBCH block

215a‧‧‧RMSI CORESET

215b‧‧‧RMSI CORESET

215c‧‧‧RMSI CORESET

215‧‧‧CORESET

220‧‧‧SS/PBCH block burst set

225‧‧‧SS/PBCH block burst set period

230‧‧‧RMSI PDCCH monitoring window

235‧‧‧ Duration

240‧‧‧Predetermined value

245‧‧‧Monitoring window period

605‧‧‧Antenna

610‧‧‧Transmission/receiving department

620‧‧‧Control Department

630‧‧‧ working memory

640‧‧‧ instruction memory

650‧‧‧Non-transitory computer readable storage medium

660‧‧‧Computer readable signal

705‧‧‧Antenna

710‧‧‧Transmission/receiving department

715‧‧‧Network communication interface

720‧‧‧Control Department

730‧‧‧ working memory

740‧‧‧Instruction Memory

750‧‧‧Non-transitory computer readable storage medium

760‧‧‧Computer readable signal

S210‧‧‧ receives a plurality of control information items, wherein each of the plurality of control information items corresponds to different resources of the plurality of monitoring resources

S212‧‧‧ Combine the multiple control message items

S20‧‧‧ sets the same at least one transmission parameter for each of the plurality of control information items to be transmitted, so that the plurality of control information items can be combined

S22‧‧‧ transmitting a plurality of control information items to be received on a plurality of monitoring resources for the remaining minimum system information RMSI

Embodiments of the present invention will now be explained in detail by way of non-limiting example only with reference to the accompanying drawings. The same reference numbers appearing in different drawings may denote the same or functionally similar elements unless otherwise indicated. 1 is a schematic diagram of a wireless communication system in accordance with an exemplary aspect of the present invention; FIG. 2 is a schematic diagram showing monitoring resources and a plurality of control information items according to example aspects in the present invention; FIG. 3 is a diagram showing scheduling of providing PDCCH Schematic diagram of an example of association between an SS/PBCH block of information and a corresponding RMSI CORESET of the PDCCH with scheduling information for the PDSCH carrying the RMSI; FIG. 4 is a flow chart showing a procedure in accordance with an exemplary aspect of the present invention Through the process, the user equipment 100 of FIG. 1 combines the plurality of control information items received on the plurality of monitoring resources of the remaining minimum system information RMSI; FIG. 5 is a flowchart showing a process according to an exemplary aspect of the present invention. Through the process, the wireless base station 200 of FIG. 1 transmits a plurality of control information items of the remaining minimum system information RMSI; FIG. 6 is a diagram showing an example signal processing of the user equipment 100 of FIG. 1 according to an exemplary embodiment in the present invention. Block diagram of a hardware setting; FIG. 7 is a block diagram showing an example signal processing hardware setting of the wireless base station 200 of FIG. 1 in accordance with an exemplary embodiment of the present invention.

Claims (10)

A method in a User Equipment (UE) of a wireless communication system, the method comprising: receiving a plurality of bearers carried on respective Physical Downlink Control Channels (PDCCHs) for scheduling a remaining minimum system information (RMSI) Controlling information items, the PDCCH being received on a plurality of monitoring resources, wherein at least two of the plurality of control information items correspond to different respective resources; and combining the plurality of control information And wherein the plurality of control information items are transmitted using the same at least one transmission parameter. The method of claim 1, wherein the plurality of monitoring resources comprise at least two of: an RMSI PDCCH monitoring window, an RMSI PDCCH transmission time interval (TTI), and a synchronization An SS/PBCH block in a signal physical broadcast channel (SS/PBCH) burst. The method of claim 1, wherein the at least one transmission parameter comprises at least one of: an aggregation level; a PDCCH candidate; a search space; an RMSI PDCCH control resource set; and a control resource set. (CORESET); and a transmission slot index. The method of claim 1, wherein the at least one transmission parameter comprises a plurality of transmission parameters. The method of claim 4, wherein the plurality of transmission parameters include an aggregation level, a PDCCH candidate, a search space, an RMSI PDCCH control resource set, a control resource set (CORESET), and a transmission. Slot index. The method of claim 1, further comprising: receiving a value indicating whether to use the same at least one transmission parameter. The method of claim 6, wherein the value is a single bit value received on a physical broadcast channel PBCH. The method of any one of clauses 1 to 5, wherein the value of the at least one transmission parameter is set to a respective predetermined value of all monitoring resources. A method in a wireless base station (gNB) of a wireless communication system, comprising: transmitting a plurality of control information items on a corresponding physical downlink control channel (PDCCH) for scheduling a remaining minimum system information (RMSI), The PDCCH is transmitted on a plurality of monitoring resources, wherein at least two of the plurality of control information items correspond to different respective resources, wherein the same at least one transmission parameter is used to transmit the multiple Control information items. A user equipment (UE) comprising: a memory; and a processor, wherein the memory stores one or more computer programs when the one or more computer programs are executed by the processor The processor is caused to perform the operations described in any one of claims 1 to 8.