TWI709354B - 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 generally relates to the field of wireless access networks, and more specifically, to the transmission of system information in wireless access networks. More specifically, the exemplary aspect of the present invention relates to a method for combining multiple remaining system information (RMSI) PDCCHs transmitted in a wireless access network, user equipment (UE), and wireless Base station (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 address a variety of usage scenarios, from enhanced mobile broadband (eMBB) to ultra-reliable low-latency communications (URLC), to large-scale machine type communications (massive machine). type communications, MMTC), and significantly improve the performance, flexibility, scalability and efficiency of current mobile networks. The main NR features include ultra lean transmission, support for low latency, advanced antenna technology and spectrum flexibility, including operation in the high frequency band, inter-operation between the high frequency band and the low frequency band (inter- working) and dynamic time division multiplexing (time division multiplexing, TDD).

In order to access the 5G network, the UE must receive and decode the system information (SI) broadcast by the radio base station (gNB) of the cell where the UE is located. In the final report of 3GPP TSG RAN WG2 (3rd Generation Partnership Project Technical Specification Group Radio Access Network Working Group 2) meeting #95, it was decided to divide the system information into “minimum system information” and “other system information” that are always broadcast, and “other System information can be configured to be broadcast to UEs or delivered to UEs on demand. Minimum system information can be divided into master information block (master information block, MIB) and remaining minimum system information (remaining minimum system information, RMSI). It is agreed that the minimum system information includes at least the information required by the UE to select a supporting cell, obtain 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.

In addition, as disclosed in the 3GPP TSG RAN W1 meeting 90bis R1-1717927, the 3GPP working group has agreed that at least part of the minimum system information should be carried on the 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 was further agreed that the minimum system information part (about 200 bits) not carried on the NR-PBCH should be transmitted as the residual minimum system information (RMSI). The RMSI may include part or all of the random access channel (RACH) configuration information and the indication of the actual signal synchronization (signal synchronization, SS) block. It is recommended that in addition to the information provided by NR-PBCH, RMSI should also include any other information that the UE needs in order to camp on the cell.

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

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 (resource element, RE) is the smallest unit of a resource grid composed of a subcarrier in the frequency domain and an OFDM symbol in the time domain. A resource element group (resource element group, REG) consists of one resource block (that is, 12 resource elements in the frequency domain) and one OFDM symbol in the time domain. Finally, the control channel element (CCE) is composed 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 be different. • PDCCH candidate: Every possible location in the downlink resource grid where the UE may find its PDCCH is called a candidate. All possible PDCCH candidates form the PDCCH search space. Each candidate corresponds to CORESET, and the position of the candidate is defined as the CCE index (the CCE number assigned to the PDCCH). • Search space: The area in the downlink resource grid that can carry one or more PDCCHs. The PDCCH used for RMSI scheduling is carried in the common search space (CSS) of the PDCCH search space. However, depending on the aggregation level, the common search space may have different candidates or different numbers of candidates. • Transmission slot index (TSI): The slot index within the frame. The time slot includes 14 OFDM symbols, the duration of which depends on the frequency.

In addition to the first part of the minimum system information, the PDCCH scheduling information 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 that indicate the PDCCH/SIB (system block) bandwidth, CORESET, common search space, and necessary PDCCH parameters, so that the UE in the cell can Access control information items carried by PDCCH, and then access RMSI.

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

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

It has been agreed in section 7.1.2.2 of the final recording report of the 3GPP TSG RAN W1 meeting 90bis that there is an RMSI PDCCH monitoring window associated with the SS/PBCH block, which recurs periodically. The control information items carried on the PDCCH used to schedule the RMSI and received by the UE may correspond to one or more specific corresponding monitoring windows. In addition, each control information item carried on the PDCCH used to schedule the RMSI and received by the UE may correspond to a specific SS/PBCH block in the periodic SS/PBCH burst set. In addition, 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 can be defined as an object indicating the time or frequency resource in the DL resource grid, and the control information item carried on the PDCCH for scheduling the RMSI and received by the UE can correspond to this object. The monitoring resources may include the RMSI physical downlink control channel, PDCCH, monitoring window, RMSI PDCCH transmission time interval TTI, and/or SS/PBCH blocks in the synchronization signal physical broadcast channel (SS/PBCH) burst.

The inventor has realized that based on the current agreement, the 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 non-limiting example, different Aggregation levels, 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 inventor designed a method in a user equipment UE of a wireless communication system. The method includes the following steps: receiving a plurality of control information items carried on a corresponding PDCCH for scheduling the remaining minimum system information RMSI, the PDCCH is received on a plurality of monitoring resources, wherein the plurality of control information items At least two of them correspond to different corresponding resources; and the multiple control information items are merged, wherein the same at least one transmission parameter is used to transmit the multiple control information items.

The inventor also designed a method in the gNB of the wireless communication system. The method includes the following steps: transmitting a plurality of control information items on a corresponding PDCCH for scheduling the remaining minimum system information RMSI, the PDCCH is transmitted on a plurality of monitoring resources, wherein at least one of the plurality of control information items The two correspond to different corresponding resources, wherein the same at least one transmission parameter is used to transmit multiple control information items.

The inventor also designed a computer program, including instructions, which when executed, prompt the computer to execute the above method.

The inventor also designed a non-transitory computer-readable storage medium that stores the above-mentioned computer program.

The inventor also designed a signal carrying the above-mentioned computer program.

The inventor also designed a corresponding user equipment UE and a corresponding radio base station gNB.

Preferred embodiments are defined in the corresponding dependent claims.

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

Where the technical features in the drawings, specific embodiments, or any claims are followed by reference signs, the sole purpose of including the reference signs is to increase the intelligibility of the drawings, specific implementations, and claims. Therefore, the reference signs and their absence have no limiting effect on the scope of any claim elements.

The embodiments of the present invention disclose at least the following solutions:

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

Solution 2. The method according to solution 1, wherein the multiple monitoring resources include at least two of the following: RMSI physical downlink control channel PDCCH monitoring window, RMSI PDCCH transmission time interval TTI, and synchronization Signal physical broadcast channel SS/PBCH block in SS/PBCH burst.

Solution 3. The method according to Solution 1 or 2, wherein the at least one transmission parameter includes at least one of the following: aggregation level; PDCCH candidates; search space; RMSI PDCCH control resource set; control resource set CORESET; and transmission Slot index.

Solution 4. The method according to any one of solutions 1 to 3, wherein the at least one transmission parameter includes a plurality of transmission parameters.

Scheme 5. The method according to scheme 4, wherein the multiple transmission parameters include aggregation level, PDCCH candidates, search space, RMSI PDCCH control resource set, CORESET, and transmission slot index.

Solution 6. The method according to any one of solutions 1 to 5, further comprising: receiving a value indicating whether to use the same at least one transmission parameter.

Solution 7. The method according to solution 6, further comprising: merging multiple control information items in the case of using the same at least one transmission parameter.

Solution 8. The method according to solutions 6 to 7, wherein the value is a single-bit value received on the physical broadcast channel PBCH.

Solution 9. The method according to any one of solutions 1 to 5, wherein the value of the at least one transmission parameter is set to a corresponding predetermined value of all monitoring resources.

Scheme 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 the remaining minimum system information RMSI, the PDCCH being monitored on a plurality of resources Wherein, at least two control information items in the plurality of control information items correspond to different corresponding resources, and the same at least one transmission parameter is used to transmit the multiple control information items.

Scheme 11. The method according to scheme 10, further comprising transmitting a value indicating whether to use the same at least one transmission parameter.

Solution 12. A computer program, including instructions, which when executed, cause the computer to execute the method according to any one of solutions 1 to 11.

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

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

Solution 15. A user equipment UE for a wireless communication system, comprising: a receiving unit configured to receive a plurality of control information items carried on a corresponding PDCCH for scheduling the remaining minimum system information RMSI, so The PDCCH is received on a plurality of monitoring resources, wherein at least two control information items in the plurality of control information items correspond to different corresponding resources; and a control unit, the control unit is configured to merge The multiple control information items, wherein the same at least one transmission parameter is used to transmit the multiple control information items.

Solution 16. The user equipment according to solution 15, wherein the multiple monitoring resources include at least two of the following: RMSI physical downlink control channel PDCCH monitoring window, RMSI PDCCH transmission time interval TTI, and The SS/PBCH block in the SS/PBCH burst of the synchronization signal physical broadcast channel.

Solution 17. The user equipment according to solution 15 or 16, wherein the at least one transmission parameter includes at least one of the following: aggregation level; PDCCH candidate; search space; RMSI PDCCH control resource set; control resource set CORESET; And the transmission slot index.

Solution 18. The user equipment according to any one of solutions 15 to 17, wherein the at least one transmission parameter includes a plurality of transmission parameters.

Solution 19. The user equipment according to claim 18, wherein the multiple transmission parameters include aggregation level, PDCCH candidates, search space, RMSI PDCCH control resource set, CORESET, and transmission slot index.

Solution 20. The user equipment according to any one of solutions 15 to 19, wherein the receiving unit is further configured to receive a value indicating whether to use the same at least one transmission parameter.

Solution 21. The user equipment according to claim 20, wherein the control unit is further configured to merge the plurality of control information items only when the same at least one transmission parameter is used.

Solution 22. The user equipment according to any one of solutions 20 to 21, wherein the value is a single-bit value received on a physical broadcast channel PBCH.

Solution 23. The user equipment according to any one of solutions 15 to 19, wherein the value of each parameter in the at least one transmission parameter is set to a corresponding predetermined value of all monitoring resources.

Solution 24. A user equipment UE, comprising: a memory; and a processor, wherein the memory stores one or more computer programs, and when the one or more computer programs are executed by the processor, The processor is caused to perform the operation according to any one of the schemes 1 to 9.

Solution 25. A radio 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 the remaining minimum system information RMSI, the PDCCH Is transmitted on a plurality of monitoring resources, wherein at least two control information items in the plurality of control information items correspond to different corresponding resources, wherein the same at least one transmission parameter is used to transmit the plurality of control information items. Control information items.

Item 26. The radio base station according to Item 24, wherein the transmission unit is further configured to transmit a value indicating whether to use the same at least one transmission parameter.

Solution 27. A wireless base station gNB, comprising: a memory; and a processor, wherein the memory stores one or more computer programs, and when the one or more computer programs are executed by the processor , Urging the processor to perform the operation according to any one of solutions 10 to 11.

[First exemplary embodiment]

Fig. 1 is a schematic diagram of a wireless communication system 10 according to 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 this embodiment, the radio base station 200 may be a 5G gNB (Next Generation NodeB). The radio base station 200 provides, for example, beamforming to provide the UE 100 in the cell 300 with access to the wireless communication network. In the example shown in FIG. 1, the radio base station 200 serves a single UE 100. However, in an alternative embodiment, the radio base station 200 may provide services to multiple UEs.

In order to access the network, the UE 100 can receive and decode the system information (SI) transmitted by the radio base station 200, especially including 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 the scheduling information of the PDCCH corresponding to the PDSCH carrying the RMSI. Send the scheduling information 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 high enough 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 item transmitted by the radio base station 200 on the PDCCH. That is, by way of a non-limiting example, the UE 100 should use the error correction code included in the coding control information on the PDCCH by the radio base station 200 to correct any transmission errors.

However, if the channel quality is poor (for example, 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 RMSI. In this way, the UE 100 will be prevented from accessing the network.

However, although the two given control information items received by the UE 200 cannot be decoded independently without error, the combination of two such control information items with transmission errors may provide enough information to allow the UE 100 to decode correctly These control information items. More generally, many error correction methods rely on combining two or more instances of received information, for example, control information items to allow correct decoding of the instances of 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 item received by the UE 100 on the PDCCH and transmitted by the radio base station 200 corresponds to the monitoring resource (associated with the monitoring resource). FIG. 2 is a schematic diagram showing a monitoring resource 230 and multiple control information items according to an exemplary aspect of the present invention.

In this embodiment, the monitoring resource 230 may be the RMSI PDCCH monitoring window 230 associated with the SS/PBCH block 210a, which periodically repeats. In the example of FIG. 2, the UE receives the control information item carried on the PDCCH used to schedule the RMSI in the CORESET 215. The control information item and therefore the CORESET 215 may correspond to one or more specific corresponding 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 may have a duration 235 of x consecutive time slots. For example, the duration 235 may be 1, 2 or 4 time slots, and the value of x may be band-dependent and/or configured in the PBCH. In this 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 deviate in time from the starting point of the SS/PBCH block 210a.

In this embodiment, the period 245y 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 the period 245 may 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. The period 245 may be band-dependent, configured in the PBCH, and/or depend on the RMSI transmission time interval (TTI). Generally, the transmission time interval is the duration of transmitting data blocks on the wireless link. In the present invention, the RMSI TTI for downward selection can be 80ms or 160ms.

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

That is, the PDCCH received by the UE and each control information item carried on the CORESET 215 may correspond to a specific corresponding monitoring window 230. In addition, each control information item 215 carried on the PDCCH used for scheduling RMSI and received by the UE may correspond to a specific SS/PBCH block 210 in the periodic SS/PBCH burst set 220. In addition, 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).

In addition, as described above, there may be some form of communication 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 RMSI. Associated. This may be required when time resources are not sufficient to allow RMSI CORESET 215 to be transmitted in the same time slot as 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 can also be associated with a set of RMSI CORESET (multiple RMSI CORESET items) 215, that is, multiple candidate positions in the DL resource grid, and multiple candidate positions can carry PDCCH. Carrying scheduling information for PDSCH, and PDSCH for carrying RMSI. When the UE successfully receives the PBCH in a specific SS/PBCH block 210, the UE will blindly detect (monitor) the RMSI PDCCH in the relevant set of RMSI CORESET 215 indicated by the PBCH.

3 is a schematic diagram showing an example of the association between the SS/PBCH block 210 (210a-201c) providing scheduling information of the PDCCH and the corresponding RMSI CORESET 215 of the PDCCH having the scheduling information of the PDSCH carrying the RMSI. As shown in the 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 corresponding RMSI CORESET 220. From the perspective of the UE 100, this many-to-one association can be represented as a one-to-one association between the SS/PBCH block 210 and the corresponding RMSI CORESET 220. By further substitution, there may be a one-to-many association between a single SS/PBCH block 210 and multiple corresponding RMSI CORESET 220.

The inventor has realized that based on the current agreement, the control information items transmitted on the PDCCH for RMSI scheduling (RMSI PDCCH) corresponding to different monitoring resources can 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 Between, the transmission parameters can be different.

Generally, these parameters can be related to the following way: resources (in terms of frequency and time) in the resource grid are allocated for transmission on the PDCCH. By way of non-limiting example, the transmission parameters of the PDCCH used for RMSI scheduling may include the following: • Aggregation level • PDCCH candidates • Search space • Control resource set (CORESET) • This difference in transmission parameters of the transmission slot index may be This is disadvantageous because it is impossible to combine control information items transmitted using different transmission parameters, or combining control information items transmitted using different transmission parameters may need to represent excess time or processing resources of the UE 100. Such control information items received on different monitoring resources cannot be combined to improve the RMSI PDCCH detection performance.

FIG. 4 is a flowchart showing a process according to an exemplary aspect of the present invention, through which the user equipment 100 of FIG. 1 merges multiple control information items received on multiple monitoring resources of the remaining minimum system information RMSI .

In the 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.

The same at least one transmission parameter is used to transmit each of the plurality of control information items. That is, each received control information item can be transmitted using the same transmission parameter, and for each of the multiple monitoring resources 230, at least one identical transmission parameter 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 (for example, the same CORESET), which allows the use of To schedule the corresponding two control information items of RMSI to improve detection performance.

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

In this embodiment, at least one transmission parameter may include multiple transmission parameters. In this embodiment, multiple transmission parameters may include aggregation level, PDCCH candidate, search space, RMSI PDCCH control resource set, CORESET, and transmission slot index.

Optionally, in this embodiment, the UE 100 may receive a value indicating whether to use the same at least one transmission parameter. 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 can receive on the PBCH whether different RMSI PDCCH monitoring windows are used and/or different TTIs and/or RMSIs corresponding to different SS/PBCH blocks in one SS/PBCH burst set. PDCCH RMSI PDCCH transmission parameter indication. These parameters include at least aggregation level and/or PDCCH candidates and/or search space and/or RMSI PDCCH CORESET and/or 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", then identical (ie identical) transmission parameters are used for RMSI PDCCHs of different RMSI PDCCH monitoring windows and/or corresponding to different SS/PBCH burst sets in one SS/PBCH. Different TTI of PBCH block and/or RMSI PDCCH of RMSI PDCCH. In this case, as described above, the UE can monitor different RMSI PDCCHs in different monitoring windows and/or different TTIs corresponding to different SS/PBCH blocks in an SS/PBCH burst set and/or RMSI PDCCH of the RMSI PDCCH. Perform PDCCH merging between.

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

Therefore, the UE 100 receives the value indicating whether the same at least one transmission parameter is used, which may allow the UE 100 to combine multiple control information items in some cases, while maintaining flexibility in the selection of transmission parameters, because whether the same at least one transmission parameter is used or not 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 corresponding predetermined value of all monitoring resources.

For example, it is specified in the specification that the RMSI PDCCH of different RMSI PDCCH monitoring windows and/or different TTIs corresponding to different SS/PBCH blocks in an SS/PBCH burst set and/or RMSI PDCCH transmission parameters of the RMSI PDCCH are used The same transmission parameters, for example, the same aggregation level and/or the same PDCCH candidates 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 ensured that the UE can perform PDCCH between different RMSI PDCCHs in different monitoring windows and/or different TTIs corresponding to different SS/PBCH blocks in one SS/PBCH burst set and/or RMSI PDCCH of the RMSI PDCCH. Combine, as described above.

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

[Second exemplary embodiment]

FIG. 5 is a flowchart showing a process according to an exemplary aspect of the present invention, through which the radio base station 200 of FIG. 1 transmits a plurality of control information items for the remaining minimum system information RMSI.

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

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

In this embodiment, at least one transmission parameter may include multiple transmission parameters. The multiple transmission parameters may include aggregation level, PDCCH candidates, search space, RMSI PDCCH control resource set, CORESET, and transmission slot index.

In this embodiment, the wireless base station 200 may set the same at least one transmission parameter for each of the multiple control information items to be transmitted only for some of the multiple control information items to be transmitted. The multiple control information items to be transmitted for the wireless base station to execute the process S20 may be based on the wireless base station 200 based on, for example, the UE in the cell 300 to which the wireless base station 200 provides network access or network traffic. (Including UE 100) to determine the corresponding capabilities.

The wireless base station 200 may set different values for at least one same transmission parameter of different control information items to be transmitted, and the value of the at least one transmission parameter is the same for each of the given control information items to be transmitted of.

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

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

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

In the process S22 of FIG. 3, the wireless 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 can be transmitted on the physical downlink control channel PDCCH. The wireless base station 200 may transmit multiple control information items to one or more UEs (including the UE 100) in the cell 300 and served by the wireless base station 200.

The wireless base station 200 uses the same at least one transmission parameter to transmit each of the multiple control information items, so that one or more UEs that receive the multiple control information items can merge the multiple control information items.

FIG. 6 is a block diagram showing an example signal processing hardware setting 600 of the user equipment 100 of FIG. 1 according to an example embodiment in the present invention. In this embodiment, the programmable signal processing hardware 600 of FIG. 6 may be configured to serve as the UE 100 of FIG. 1. However, it should be noted that the device 600 may alternatively be implemented in non-programmable hardware (for example, a dedicated integrated circuit (ASIC)) or in any other suitable manner, using any suitable combination of hardware and software components. , Enabling the UE to include processing and communication functions required to operate according to one or more traditional telecommunication standards, including but not limited to GSM, PCS, 3GPP, LTE, LTE-A, UMTS, 3G, 4G, and 5G.

The programmable signal processing hardware 600 includes a transmitting/receiving part 610 and one or more antennas 605. The signal processing device 600 also includes a control unit (for example, a processor, such as a central processing unit CPU or a graphics processing unit GPU) 620, a working memory 630 (for example, random access memory), and a computer readable instruction The instruction memory 640, when the instruction is executed by the control unit 620, prompts the processor 620 to perform the function of the UE in FIG. 1.

The instruction memory 640 may include ROM (for example, in the form of an electrically erasable programmable read-only memory (EEPROM) or flash memory), which is 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 it from a computer program product, for example, a non-transitory computer program in the form of CD-ROM, DVD-ROM, etc. Read the storage medium 650 or the computer-readable signal 660 carrying computer-readable instructions.

FIG. 7 is a block diagram showing an example signal processing hardware setting 700 of the wireless base station 200 of FIG. 1 according to an example embodiment in the present invention. As in this exemplary embodiment, the programmable signal processing hardware 700 of FIG. 4 may be configured to be used as the wireless base station 200 of FIG. 1. However, it should be noted that the device 700 may alternatively be implemented in non-programmable hardware (for example, a dedicated integrated circuit (ASIC)) or in any other suitable manner, using any suitable combination of hardware and software components. , Enabling the wireless base station to include processing and communication functions required to operate according to one or more traditional telecommunications standards, including but not limited to GSM, PCS, 3GPP, LTE, LTE-A, UMTS, 3G, 4G, and 5G.

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

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

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 CORESET215b‧‧‧RMSI CORESET215c‧‧‧RMSI CORESET215‧‧‧CORESET220‧‧‧SS/PBCH block burst set 225‧‧‧SS/PBCH block burst set Cycle 230‧‧‧RMSI PDCCH monitoring window 235‧‧‧Duration 240‧‧‧Predetermined value 245‧‧‧Monitoring window cycle 605‧‧‧antenna 610‧‧‧transmission/reception part 620‧‧‧control part 630‧ ‧‧Working memory 640‧‧‧Command memory 650‧‧‧Non-transitory computer readable storage medium 660‧‧‧Computer readable signal 705‧‧‧antenna 710‧‧‧transmitting/receiving part 715‧‧‧net Communication interface 720‧‧‧Control unit 730‧‧‧Working memory 740‧‧‧Command memory 750‧‧‧Non-transitory computer readable storage medium 760‧‧‧Computer readable signal S210‧‧‧Receive multiple Control information items, where each of the multiple control information items corresponds to a different resource of the multiple monitoring resources S212‧‧‧Combine the multiple control information items S20‧‧‧ are multiple control information items to be transmitted Set the same at least one transmission parameter in each item, so that multiple control information items can be combined. S22‧‧‧Transmit multiple control information items to be received on multiple monitoring resources for the remaining minimum system information RMSI

The embodiments of the present invention will now be explained in detail only by way of non-limiting examples with reference to the drawings described below. Unless otherwise specified, the same reference numerals appearing in different drawings may indicate the same or functionally similar elements. Fig. 1 is a schematic diagram of a wireless communication system according to an exemplary aspect of the present invention; Fig. 2 is a schematic diagram showing a monitoring resource and a plurality of control information items according to an exemplary aspect of the present invention; Fig. 3 is a schematic diagram showing a PDCCH provisioning schedule A schematic diagram of an example of the association between the SS/PBCH block of the information and the corresponding RMSI CORESET of the PDCCH with scheduling information for the PDSCH carrying the RMSI; FIG. 4 is a flowchart showing a process according to the exemplary aspect of the present invention Through this process, the user equipment 100 of FIG. 1 merges multiple control information items received on multiple 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 this 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 shows an exemplary signal processing of the user equipment 100 of FIG. 1 according to an exemplary embodiment of the present invention Block diagram of hardware settings; FIG. 7 is a block diagram showing example signal processing hardware settings of the wireless base station 200 of FIG. 1 according to an example embodiment in the present invention.

210a‧‧‧SS/PBCH block

210b‧‧‧SS/PBCH block

210c‧‧‧SS/PBCH block

210d‧‧‧SS/PBCH block

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

Claims (10)

A method in a user equipment (UE) of a wireless communication system, the method comprising: receiving a plurality of PDCCHs carried on a corresponding physical downlink control channel (PDCCH) for scheduling a residual minimum system information (RMSI) Control information items, the PDCCH is received on a plurality of monitoring resources, wherein at least two control information items in the plurality of control information items correspond to different monitoring resources; and combining the plurality of control information items Control information items, wherein the same at least one transmission parameter is used to transmit the multiple control information items. The method according to claim 1, wherein the multiple monitoring resources include at least two of the following: an RMSI PDCCH monitoring window, an RMSI PDCCH transmission time interval (TTI), and a synchronization A SS/PBCH block in the signal physical broadcast channel (SS/PBCH) burst. The method according to claim 1, wherein the at least one transmission parameter includes at least one of the following: 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 according to item 1 of the scope of patent application, wherein the at least one transmission parameter includes a plurality of transmission parameters. The method according to claim 4, wherein the multiple 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 described in item 1 of the scope of patent application further includes: receiving a value indicating whether the same at least one transmission parameter is used. The method according to item 6 of the scope of patent application, wherein the value is a single-bit value received on the physical broadcast channel PBCH. The method according to any one of items 1 to 5 of the scope of the patent application, wherein the value of the at least one transmission parameter is set to a corresponding predetermined value of all monitoring resources. A method in a radio base station (gNB) of a wireless communication system includes: transmitting a plurality of control information items on a corresponding physical downlink control channel (PDCCH) for scheduling a residual minimum system information (RMSI), so The PDCCH is transmitted on a plurality of monitoring resources, wherein at least two control information items in the plurality of control information items correspond to different monitoring resources, wherein the same at least one transmission parameter is used to transmit all the control information items. Describe multiple control information items. A user equipment (UE) includes: a memory; and a processor, Wherein, the memory stores one or more computer programs, and when the one or more computer programs are executed by the processor, the processor is prompted to execute any of items 1 to 8 of the scope of the patent application One described operation.

Images