Patent Publication Number: US-2020280938-A1

Title: Method and device for indicating period information of common control resource set of remaining key system information

Description:
TECHNICAL FIELD 
     The disclosure relates to the technical field of communication, and more particularly, to a method and device for indicating period information of a common control resource set (CORESET) of remaining key system information (RMSI), a method and device for searching for a CORESET of RMSI, a base station, user equipment (UE), and a computer-readable storage medium. 
     BACKGROUND 
     In the recent 3rd Generation Partnership Project (3GPP) discussion, it is proposed that how to indicate period information of a CORESET of RMSI in a physical broadcast channel (PBCH) is an important issue to be solved. Because the PBCH currently leaves only about 8 bits for indication information of the CORESET of the RMSI, in which one or two bits may need to be reserved for future use, it is a great challenge to how to indicate the period information of the CORESET of the RMSI in a broadband system. In addition, since merging of the PBCH in time domain is to be considered, the content of a bit of the PBCH, that is used to indicate a CORESET period, in a synchronous broadcast block (SSB) corresponding to each beam is required to be the same which further limits the freedom of indication for the CORESET of the RMSI in frequency domain and increases the indication difficulty. 
     SUMMARY 
     In view of this, the disclosure relates to a method and device for indicating period information of a CORESET of RMSI, a method and device for searching for a CORESET of RMSI, a base station, a UE, and a computer-readable storage medium, so as to indicate period information of a CORESET by using as few bits as possible. 
     According to a first aspect of embodiments of the disclosure, a method for indicating period information of a CORESET of RMSI is provided. The method may be applicable to a base station and include: 
     adding indication information to a PBCH of an SSB, the indication information including first indication information configured to indicate a positional relationship between a half radio frame where a CORESET of RMSI corresponding to the SSB is located and a half radio frame where the SSB is located; and 
     sending the SSB carrying the indication information to UE in a beam scanning manner. 
     In an embodiment, the indication information may further include second indication information configured to indicate a magnitude relationship between a value of a period of the CORESET of the RMSI and a value of a period of the SSB. 
     In an embodiment, the first indication information may occupy one bit or two bits. 
     According to a second aspect of the embodiments of the disclosure, a method for searching for a CORESET of RMSI is provided. The method may be applicable to UE and include: 
     receiving an SSB carrying indication information from a base station, the indication information including first indication information configured to indicate a positional relationship between a half radio frame where a CORESET of RMSI corresponding to the SSB is located and a half radio frame where the SSB is located; 
     obtaining the half radio frame where the CORESET of the RMSI is located according to the half radio frame where the SSB is located and the first indication information; and 
     searching for the CORESET of the RMSI in the half radio frame where the CORESET of the RMSI is located. 
     In an embodiment, the indication information may further include second indication information configured to indicate a magnitude relationship between a value of a period of the CORESET of the RMSI and a value of a period of the SSB. 
     In an embodiment, the first indication information may occupy one bit or two bits. 
     In an embodiment, the method may further include: 
     before obtaining the half radio frame where the CORESET of the RMSI is located according to the half radio frame where the SSB is located and the first indication information, obtaining the value of the period of the CORESET of the RMSI according to the value of the period of the SSB and the second indication information. 
     According to a third aspect of the embodiments of the disclosure, a device for indicating period information of a CORESET of RMSI is provided. The device may be applicable to a base station and include: 
     an addition module, configured to add indication information to a PBCH of an SSB, the indication information including first indication information configured to indicate a positional relationship between a half radio frame where a CORESET of RMSI corresponding to the SSB is located and a half radio frame where the SSB is located; and 
     a sending module, configured to send the SSB carrying the indication information added by the addition module to UE in a beam scanning manner. 
     In an embodiment, the indication information may further include second indication information configured to indicate a magnitude relationship between a value of a period of the CORESET of the RMSI and a value of a period of the SSB. 
     In an embodiment, the first indication information may occupy one bit or two bits. 
     According to a fourth aspect of the embodiments of the disclosure, a device for searching for a CORESET of RMSI is provided. The device may be applicable to UE and include: 
     a receiving module, configured to receive an SSB carrying indication information from a base station, the indication information including first indication information configured to indicate a positional relationship between a half radio frame where a CORESET of RMSI corresponding to the SSB is located and a half radio frame where the SSB is located; 
     a first obtaining module, configured to obtain the half radio frame where the CORESET of the RMSI is located according to the half radio frame where the SSB is located and the first indication information that is carried in the SSB received by the receiving module; and 
     a search module, configured to search for the CORESET of the RMSI in the half radio frame where the CORESET of the RMSI obtained by the first obtaining module is located. 
     In one embodiment, the indication information may further include second indication information configured to indicate a magnitude relationship between a value of a period of the CORESET of the RMSI and a value of a period of the SSB. 
     In one embodiment, the first indication information may occupy one bit or two bits. 
     In one embodiment, the device may further include: 
     a second obtaining module, configured to obtain, before the first obtaining module obtains the half radio frame where the CORESET of the RMSI is located according to the half radio frame where the SSB is located and the first indication information, the value of the period of the CORESET of the RMSI according to the value of the period of the SSB and the second indication information. 
     According to a fifth aspect of the embodiments of the disclosure, a base station is provided, which may include: 
     a processor; and 
     a memory configured to store instructions executable by the processor. 
     The processor may be configured to: 
     add indication information to a PBCH of an SSB, the indication information including first indication information configured to indicate a positional relationship between a half radio frame where a CORESET of RMSI corresponding to the SSB is located and a half radio frame where the SSB is located; and 
     send the SSB carrying the indication information to a UE in a beam scanning manner. 
     According to a sixth aspect of the embodiments of the disclosure, UE is provided, which may include: 
     a processor; and 
     a memory configured to store instructions executable by the processor. 
     The processor may be configured to: 
     receive an SSB carrying indication information from a base station, the indication information including first indication information configured to indicate a positional relationship between a half radio frame where a CORESET of RMSI corresponding to the SSB is located and a half radio frame where the SSB is located; 
     obtain the half radio frame where the CORESET of the RMSI is located according to the half radio frame where the SSB is located and the first indication information; and 
     search for the CORESET of the RMSI in the half radio frame where the CORESET of the RMSI is located. 
     According to a seventh aspect of the embodiments of the disclosure, a computer-readable storage medium is provided. The computer-readable storage medium may store computer instructions that, when being executed by a processor, implement the steps of the method for indicating period information of a CORESET of RMSI as described above. 
     According to an eighth aspect of the embodiments of the disclosure, a computer-readable storage medium is provided. The computer-readable storage medium may store computer instructions that, when being executed by a processor, implement the steps of the method for searching for a CORESET of RMSI as described above. 
     The technical solutions provided by the embodiments of the disclosure may include the following beneficial effects. 
     First indication information, that is configured to indicate a positional relationship between a half radio frame where a CORESET of RMSI corresponding to the SSB is located and a half radio frame where the SSB is located, is added to a PBCH of an SSB, so as to indicate period information of a CORESET of RMSI by using as few bits as possible. 
     The half radio frame where the CORESET of the RMSI is located is obtained according to the half radio frame where the SSB is located and the first indication information carried in the received SSB, and the CORESET of the RMSI is searched for in the half radio frame where the CORESET of the RMSI is located. The entire implementation process takes fewer bits to indicate the period information of the CORESET of the RMSI, resulting in the frequency of a UE searching for the half radio frame where the CORESET of the RMSI is located to be reduced, thereby improving the search efficiency of the CORESET of the RMSI. 
     It is to be understood that the above general description and detailed description below are only exemplary and explanatory and not intended to limit the disclosure. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and, together with the specification, serve to explain the principles of the disclosure. 
         FIG. 1  is a flowchart showing a method for indicating period information of a CORESET of RMSI according to an exemplary embodiment of the disclosure. 
         FIG. 2  is a flowchart showing a method for searching for a CORESET of RMSI, according to an exemplary embodiment of the disclosure. 
         FIG. 3  is a signaling flowchart showing a method for searching for a CORESET of RMSI, according to an exemplary embodiment of the disclosure. 
         FIG. 4  is a block diagram illustrating a device for indicating period information of a CORESET of RMSI, according to an exemplary embodiment. 
         FIG. 5  is a block diagram illustrating a device for searching for a CORESET of RMSI, according to an exemplary embodiment. 
         FIG. 6  is a block diagram illustrating another device for searching for a CORESET of RMSI, according to an exemplary embodiment. 
         FIG. 7  is a block diagram illustrating a device suitable for indicating period information of a CORESET of RMSI, according to an exemplary embodiment. 
         FIG. 8  is a block diagram illustrating a device for searching for a CORESET of RMSI, according to an exemplary embodiment. 
     
    
    
     DETAILED DESCRIPTION 
     Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. The following description refers to the accompanying drawings in which the same numbers in different drawings represent the same or similar elements unless otherwise represented. The implementations set forth in the following description of exemplary embodiments do not represent all implementations consistent with the disclosure. Instead, they are merely examples of devices and methods consistent with aspects related to the disclosure as recited in the appended claims. 
       FIG. 1  is a flowchart showing a method for indicating period information of a CORESET of RMSI, according to an exemplary embodiment of the disclosure. This embodiment is described from a base station side. As shown in  FIG. 1 , the method for indicating period information of a CORESET of RMSI includes the following steps. 
     In step S 101 , indication information is added to a PBCH of an SSB. The indication information includes first indication information configured to indicate a positional relationship between a half radio frame where a CORESET of RMSI corresponding to the SSB is located and a half radio frame where the SSB is located. 
     The SSB may be an SS Block or a PBCH Block. The first indication information may occupy different bits, for example, may occupy one bit or two bits. 
     In this embodiment, for periods of a CORESET of RMSI that have different magnitudes or sizes, the first indication information having the same content may represent different meanings. For example, if a value of a period of the CORESET of the RMSI is 10 milliseconds (ms) and the first indication information occupies one bit, when a value of the bit is 0, it may indicate that the SSB and the CORESET of the RMSI corresponding to the SSB are located in the same half radio frame. When the value of bit is 1, it may indicate that the CORESET of the RMSI corresponding to the SSB is located in a next half radio frame to that of the SSB. For example, if a value of the period of the CORESET of the RMSI is 20 ms and the first indication information occupies one bit, when the value of the bit is 0, it may indicate that the SSB is located in a current half radio frame, and the CORESET of the RMSI corresponding to the SSB is located in a next half radio frame. When the value of the bit is 1, it may indicate that the SSB is located in the (n+2) th  half radio frame and the CORESET of the RMSI corresponding to the SSB is located in the (n+3) th  half radio frame. 
     In addition, for periods of a CORESET of RMSI that have the same magnitude, a positional relationship between the half radio frame where the CORESET of the RMSI corresponding to the SSB is located and the half radio frame where the SSB is located may be represented by first indication information occupying different bits. For example, the positional relationship therebetween may be represented by the first indication information of 1 bit. The positional relationship therebetween may be represented by the first indication information of 2 bits. The use of the first indication information of 2 bits may increase the flexibility of indication. 
     In this embodiment, the indication information may further include second indication information configured to indicate a magnitude relationship between a value of a period of the CORESET of the RMSI and a value of a period of the SSB. The value of the period of the CORESET of the RMSI is greater than or equal to the value of the period of the SSB (a maximum period value of the CORESET of the RMSI does not exceed 320 ms), and there is a certain relationship between the value of the period of the CORESET of the RMSI and the value of the period of the SSB. For example, Table 1 shows a correspondence between multiple period values of a CORESET of RMSI and multiple period values of an SSB. 
     
       
         
           
               
             
               
                 TABLE 1 
               
             
            
               
                   
               
               
                 Correspondence between period of 
               
               
                 CORESET of RMSI and period of SSB 
               
            
           
           
               
               
               
            
               
                 Period of SSB 
                 Period of CORESET of RMSI (ms) 
                   
               
            
           
           
               
               
               
               
               
            
               
                 (ms) 
                 00 
                 01 
                 10 
                 11 
               
               
                   
               
            
           
           
               
               
               
               
               
            
               
                 5 
                 5 
                 10 
                 20 
                 40 
               
               
                 10 
                 10 
                 20 
                 40 
                 80 
               
               
                 20 
                 20 
                 40 
                 80 
                 160 
               
               
                 40 
                 40 
                 80 
                 160 
                 320 
               
               
                 80 
                 80 
                 160 
                 320 
                 X 
               
               
                   
               
            
           
         
       
     
     It can be seen from Table 1 that the period of the CORESET of the RMSI may be 1, 2, 4, or 8 times the value of the period of the SSB. Therefore, the second indication information may be represented by 2 bits, and fewer bits are used. 
     In addition, in this embodiment, the period information of the CORESET of the RMSI may include a positional relationship between the half radio frame where the CORESET of the RMSI is located and the half radio frame where the corresponding SSB is located, and the value of the period of the CORESET of the RMSI. 
     In step S 102 , the SSB carrying the indication information is sent to a UE in a beam scanning manner. 
     In this embodiment, after the indication information is added to the PBCH of the SSB, the SSB carrying the indication information may be sent to a UE in a beam scanning manner. 
     In the foregoing embodiment, first indication information, that is configured to indicate a positional relationship between a half radio frame where a CORESET of RMSI corresponding to the SSB is located and a half radio frame where the SSB is located, is added to a PBCH of an SSB, so as to indicate period information of a CORESET of RMSI by using as few bits as possible. 
       FIG. 2  is a flowchart showing a method for searching for a CORESET of RMSI, according to an exemplary embodiment of the disclosure. This embodiment is described from a UE side. As shown in  FIG. 2 , the method for searching for a CORESET of RMSI includes the following steps. 
     In step S 201 , an SSB carrying indication information sent by a base station is received by the UE. The indication information includes first indication information configured to indicate a positional relationship between a half radio frame where a CORESET of RMSI corresponding to the SSB is located and a half radio frame where the SSB is located. 
     The first indication information may occupy different bits, for example, one or two bits. 
     In this embodiment, the indication information may further include second indication information configured to indicate a magnitude relationship between a value of a period of the CORESET of the RMSI and a value of a period of the SSB. 
     In step S 202 , a half radio frame where the CORESET of the RMSI is located is obtained by the UE according to a half radio frame where the SSB is located and the first indication information. 
     In this embodiment, if the indication information further includes second indication information, the UE firstly obtains the value of the period of the CORESET of the RMSI according to the value of the period of the SSB and the second indication information, and then obtains the half radio frame where the CORESET of the RMSI is located according to the half radio frame where the SSB is located and the first indication information. 
     Because the second indication information occupies fewer bits, the period of the CORESET of the RMSI can be obtained by using a fewer number of times. 
     In step S 203 , the CORESET of the RMSI is searched for in the half radio frame where the CORESET of the RMSI is located. 
     After the UE obtains the half radio frame where the CORESET of the RMSI is located, the UE may search for or find the CORESET of the RMSI in the half radio frame where the CORESET of the RMSI is located. 
     In the foregoing embodiment, the half radio frame where the CORESET of the RMSI is located is obtained according to the half radio frame where the SSB is located and the first indication information carried in the received SSB, and the CORESET of the RMSI is searched for in the half radio frame where the CORESET of the RMSI is located. The entire implementation process realizes indication of the period information of the CORESET of the RMSI by using fewer bits, resulting in the frequency of a UE searching for the half radio frame where the CORESET of the RMSI is located to be reduced, thereby improving the search efficiency of the CORESET of the RMSI. 
       FIG. 3  is a signaling flowchart showing a method for searching for a CORESET of RMSI, according to an exemplary embodiment of the disclosure. This embodiment is described on the basis of interaction between a base station and UE. As shown in  FIG. 3 , the method includes the following steps. 
     In step S 301 , the base station adds indication information to a PBCH of an SSB. The indication information includes first indication information and second indication information. The first indication information is configured to indicate a positional relationship between a half radio frame where a CORESET of RMSI corresponding to the SSB is located and a half radio frame where the SSB is located. The second indication information is configured to indicate a magnitude relationship between a value of a period of the CORESET of the RMSI and a value of a period of the SSB. 
     In step S 302 , the base station sends the SSB carrying the indication information to the UE in a beam scanning manner. 
     In step S 303 , the UE receives the SSB carrying the indication information sent by the base station. 
     In step S 304 , the UE obtains the period of a CORESET of RMSI according to the period of the SSB and the second indication information, and obtains the half radio frame where the CORESET of the RMSI is located according to the half radio frame where the SSB is located and the first indication information. 
     In step S 305 , the UE searches for the CORESET of the RMSI in the half radio frame where the CORESET of the RMSI is located. 
     In the foregoing embodiment, through interaction between the base station and the UE, the period information of the CORESET of the RMSI can be indicated by using as few bits as possible, and the search efficiency for the CORESET of the RMSI can be improved. 
       FIG. 4  is a block diagram illustrating a device for indicating period information of a CORESET of RMSI, according to an exemplary embodiment. The device may be located in a base station. As shown in  FIG. 4 , the device includes an addition module  41  and a sending module  42 . 
     The addition module  41  is configured to add indication information to a PBCH of an SSB. The indication information includes first indication information configured to indicate a positional relationship between a half radio frame where a CORESET of RMSI corresponding to the SSB is located and a half radio frame where the SSB is located. 
     The first indication information may occupy different bits, for example, may occupy one bit or two bits. 
     In this embodiment, for periods of a CORESET of RMSI that have different magnitudes, the first indication information having the same content may represent different meanings. For example, if a value of a period of the CORESET of the RMSI is 10 milliseconds (ms) and the first indication information occupies one bit, when the value of the bit is 0, it may indicate that the SSB and the CORESET of the RMSI corresponding to the SSB are located in the same half radio frame. When the value of the bit is 1, it may indicate that the CORESET of the RMSI corresponding to the SSB is located in a next half radio frame to that of the SSB. For example, if the value of the period of the CORESET of the RMSI is 20 milliseconds (ms) and the first indication information occupies one bit, when the value of the bit is 0, it may indicate that the SSB is located in a current half radio frame, and the CORESET of the RMSI corresponding to the SSB is located in a next half radio frame. When the value of the bit is 1, it may indicate that the SSB is located in an (n+2) th  half radio frame and the CORESET of the RMSI corresponding to the SSB is located in an (n+3) th  half radio frame. 
     In addition, for periods of a CORESET of RMSI that have the same magnitude, a positional relationship between the half radio frame where the CORESET of the RMSI corresponding to the SSB is located and the half radio frame where the SSB is located may be represented by first indication information occupying different bits. For example, the positional relationship therebetween may be represented by the first indication information of 1 bit. The positional relationship therebetween may be represented by the first indication information of 2 bits. The use of the first indication information of 2 bits may increase the flexibility of indication. 
     In this embodiment, the indication information may further include second indication information configured to indicate a magnitude relationship between the value of the period of the CORESET of the RMSI and the value of the period of the SSB. The value of the period of the CORESET of the RMSI is greater than or equal to the value of the period of the SSB (a maximum period value of the CORESET of the RMSI does not exceed 320 ms), and there is a certain relationship between the value of the period of the CORESET of the RMSI and the value of the period of the SSB. For example, Table 1 shows a correspondence between multiple period values of a CORESET of RMSI and multiple period values of an SSB. 
     It can be seen from Table 1 that the period of the CORESET of the RMSI may be 1, 2, 4, or 8 times the period of the SSB. Therefore, the second indication information may be represented by 2 bits, and fewer bits are used. 
     In addition, in this embodiment, the period information of the CORESET of the RMSI may include a positional relationship between the half radio frame where the CORESET of the RMSI is located and the half radio frame where the corresponding SSB is located, and the period of the CORESET of the RMSI. 
     The sending module  42  is configured to send, in a beam scanning manner, the SSB carrying the indication information added by the addition module  41  to a UE. 
     In this embodiment, after the indication information is added to the PBCH of the SSB, the SSB carrying the indication information may be sent to a UE in a beam scanning manner. 
     In the foregoing embodiment, first indication information, that is configured to indicate a positional relationship between a half radio frame where a CORESET of RMSI corresponding to the SSB is located and a half radio frame where the SSB is located, is added to a PBCH of an SSB, so as to indicate period information of a CORESET of RMSI by using as few bits as possible. 
       FIG. 5  is a block diagram illustrating a device for searching for a CORESET of RMSI, according to an exemplary embodiment. The device may be applied in a UE. As shown in  FIG. 5 , the device includes a receiving module  51 , a first obtaining module  52  and a search module  53 . 
     The receiving module  51  is configured to receive an SSB carrying indication information sent by a base station. The indication information includes first indication information configured to indicate a positional relationship between a half radio frame where a CORESET of RMSI corresponding to the SSB is located and a half radio frame where the SSB is located. 
     The first indication information may occupy different bits, for example, may occupy one bit or two bits. 
     In this embodiment, the indication information may further include second indication information configured to indicate a magnitude relationship between a value of a period of the CORESET of the RMSI and a value of a period of the SSB. 
     The first obtaining module  52  is configured to obtain, according to a half radio frame where the SSB is located and the first indication information carried in the SSB received by the receiving module  51 , a half radio frame where the CORESET of the RMSI is located. 
     The search module  53  is configured to search for the CORESET of the RMSI in the half radio frame where the CORESET of the RMSI obtained by the first obtaining module  52  is located. 
     After the UE obtains the half radio frame where the CORESET of the RMSI is located, the UE may search for the CORESET of the RMSI in the half radio frame where the CORESET of the RMSI is located. 
     In the foregoing embodiment, the half radio frame where the CORESET of the RMSI is located is obtained according to the half radio frame where the SSB is located and the first indication information carried in the received SSB, and the CORESET of the RMSI is searched in the half radio frame where the CORESET of the RMSI is located. The entire implementation process realizes indication of the period information of the CORESET of the RMSI by using fewer bits, resulting in the frequency of a UE searching for the half radio frame where the CORESET of the RMSI is located, thereby improving the search efficiency of the CORESET of the RMSI. 
       FIG. 6  is a block diagram illustrating another device for searching for a CORESET of RMSI, according to an exemplary embodiment. As shown in  FIG. 6 , on the basis of the foregoing embodiment shown in  FIG. 5 , the device may further include a second obtaining module  54 . 
     The second obtaining module  54  is configured to obtain, before the first obtaining module  52  obtains the half radio frame where the CORESET of the RMSI is located according to the half radio frame where the SSB is located and the first indication information, a value of a period of the CORESET of the RMSI according to a value of a period of the SSB and the second indication information. 
     In this embodiment, if the indication information further includes second indication information, the UE firstly obtains the period of the CORESET of the RMSI according to the period of the SSB and the second indication information, and then obtains the half radio frame where the CORESET of the RMSI is located according to the half radio frame where the SSB is located and the first indication information. 
     In the foregoing embodiment, the period of the CORESET of the RMSI is obtained according to the period of the SSB and the second indication information. Since the second indication information occupies few bits, it takes a fewer number of times to obtain the period of the CORESET of the RMSI. 
       FIG. 7  is a block diagram illustrating a device for indicating period information of a CORESET of RMSI, according to an exemplary embodiment. A device  700  may be provided as a base station. Referring to  FIG. 7 , the device  700  includes a processing component  722 , a wireless transmitting/receiving component  724 , an antenna component  726 , and a wireless interface-specific signal processing portion. The processing component  722  may further include one or more processors. 
     One of the processors in the processing component  722  may be configured to: 
     add indication information to a PBCH of an SSB, the indication information including first indication information configured to indicate a positional relationship between a half radio frame where a CORESET of RMSI corresponding to the SSB is located and a half radio frame where the SSB is located; and 
     send, in a beam scanning manner, the SSB carrying the indication information to a UE. 
     In some embodiments, there is also provided a non-transitory computer-readable storage medium including instructions, executable by the processor  722  of the device  700  to complete the above described method for indicating period information of a CORESET of RMSI. For example, the non-transitory computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a Compact Disc Read-Only Memory (CD-ROM), a magnetic tape, a floppy disc, an optical data storage device and the like. 
       FIG. 8  is a block diagram illustrating a device for indicating period information of a CORESET of RMSI, according to an exemplary embodiment. For example, a device  800  may be a UE such as a mobile phone, a computer, a digital broadcast terminal, a messaging device, a gaming console, a tablet, a medical device, exercise equipment, and a personal digital assistant. 
     Referring to  FIG. 8 , the device  800  may include one or more of the following components: a processing component  802 , a memory  804 , a power component  806 , a multimedia component  808 , an audio component  810 , an Input/Output (I/O) interface  812 , a sensor component  814 , and a communication component  816 . 
     The processing component  802  typically controls overall operations of the device  800 , such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component  802  may include one or more processors  820  to execute instructions to perform all or part of the steps in the above described methods. Moreover, the processing component  802  may include one or more modules which facilitate the interactions between the processing component  802  and other components. For example, the processing component  802  may include a multimedia module to facilitate the interaction between the multimedia component  808  and the processing component  802 . 
     One of the processors  820  in the processing component  802  may be configured to: 
     receive an SSB carrying indication information sent by a base station, the indication information including first indication information configured to indicate a positional relationship between a half radio frame where a CORESET of RMSI corresponding to the SSB is located and a half radio frame where the SSB is located; 
     obtain the half radio frame where the CORESET of the RMSI is located according to the half radio frame where the SSB is located and the first indication information; and 
     search for the CORESET of the RMSI in the half radio frame where the CORESET of the RMSI is located. 
     The memory  804  is configured to store various types of data to support the operation of the device  800 . Examples of such data include instructions for any applications or methods operated on the device  800 , contact data, phonebook data, messages, pictures, video, etc. The memory  804  may be implemented using any type of volatile or non-volatile memory devices, or a combination thereof, such as a Static Random Access Memory (SRAM), an Electrically Erasable Programmable Read-Only Memory (EEPROM), an Erasable Programmable Read-Only Memory (EPROM), a Programmable Read-Only Memory (PROM), a Read-Only Memory (ROM), a magnetic memory, a flash memory, a magnetic or optical disk. 
     The power component  806  provides power to various components of the device  800 . The power component  806  may include: a power management system, one or more power sources, and any other components associated with the generation, management and distribution of power in the device  800 . 
     The multimedia component  808  includes a screen providing an output interface between the device  800  and the user. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes the TP, the screen may be implemented as a touch screen to receive input signals from the user. The TP includes one or more touch sensors to sense touches, swipes and gestures on the TP. The touch sensors may not only sense a boundary of a touch or swipe action, but also sense a period of time and a pressure associated with the touch or swipe action. In some embodiments, the multimedia component  808  includes a front camera and/or a rear camera. The front camera and/or the rear camera may receive an external multimedia datum while the device  800  is in an operation mode, such as a photographing mode or a video mode. Each of the front camera and the rear camera may be a fixed optical lens system or have focus and optical zoom capability. 
     The audio component  810  is configured to output and/or input audio signals. For example, the audio component  810  includes a Microphone (MIC) configured to receive an external audio signal when the device  800  is in an operation mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal may be further stored in the memory  804  or transmitted via the communication component  816 . In some embodiments, the audio component  810  further includes a speaker to output audio signals. 
     The I/O interface  812  provides an interface between the processing component  802  and peripheral interface modules, such as a keyboard, a click wheel, or buttons. The buttons may include, but are not limited to, a home button, a volume button, a starting button, and a locking button. 
     The sensor component  814  includes one or more sensors to provide status assessments of various aspects of the device  800 . For example, the sensor component  814  may detect an open/closed status of the device  800 , and relative positioning of components. For example, the component is the display and the keypad of the device  800 . The sensor component  814  may also detect a change in position of the device  800  or a component of the device  800 , a presence or absence of user contact with the device  800 , an orientation or an acceleration/deceleration of the device  800 , and a change in temperature of the device  800 . The sensor component  814  may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor component  814  may also include a light sensor, such as a Complementary Metal Oxide Semiconductor (CMOS) or Charge Coupled Device (CCD) image sensor, for use in imaging applications. In some embodiments, the sensor component  814  may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor. 
     The communication component  816  is configured to facilitate communication, wired or wirelessly, between the device  800  and other devices. The device  800  may access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In one exemplary embodiment, the communication component  816  receives a broadcast signal or broadcast associated information from an external broadcast management system via a broadcast channel In one exemplary embodiment, the communication component  816  further includes a Near Field Communication (NFC) module to facilitate short-range communications. For example, the NFC module may be implemented based on a Radio Frequency Identification (RFID) technology, an Infrared Data Association (IrDA) technology, an Ultra-Wideband (UWB) technology, a Bluetooth (BT) technology, and other technologies. 
     In some embodiments, the device  800  may be implemented with one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors, or other electronic elements, for performing the above described methods. 
     In some embodiments, there is also provided a non-transitory computer-readable storage medium including instructions, such as being included in the memory  804 , executable by the processor  820  of the device  800  to complete the above described methods. For example, the non-transitory computer-readable storage medium may be a ROM, a RAM, a CD-ROM, a magnetic tape, a floppy disc, an optical data storage device and the like. 
     The device embodiments substantially correspond to the method embodiments, and thus reference for related parts may be made to descriptions of the method embodiments. The device embodiment described above is only schematic. Units described as separate parts therein may or may not be physically separated. Parts displayed as units may or may not be physical units, and namely may be located in the same place or may also be distributed to a plurality of network units. Part or all of the modules therein may be selected according to a practical requirement to achieve the purpose of the solutions of the embodiments. Those of ordinary skill in the art may understand and implement without creative work. 
     It is to be noted that relational terms “first”, “second” and the like in the disclosure are adopted only to distinguish one entity or operation from another entity or operation and not always to require or imply existence of any such practical relationship or sequence between the entities or operations. Terms “include” and “comprise” or any other variation thereof is intended to cover nonexclusive inclusions, so that a process, method, object or device including a series of elements not only includes those elements, but also includes other elements that are not clearly listed, or further includes elements intrinsic to the process, the method, the object or the device. Under the condition of no more limitations, an element defined by statement “including a/an” does not exclude existence of another element that is the same in a process, method, object or device including the element. 
     Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed here. The disclosure is intended to cover any variations, uses, or adaptations of the disclosure following the general principles thereof and including such departures from the disclosure as come within known or customary practice in the art. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims. 
     It will be appreciated that the disclosure is not limited to the exact construction that has been described above and illustrated in the accompanying drawings, and that various modifications and changes can be made without departing from the scope thereof. It is intended that the scope of the disclosure only be limited by the appended claims.