A search space monitoring method, a search space monitoring device and a storage medium

Abstract

The present disclosure relates to a search space monitoring method, a search space monitoring device and a storage medium. The search space monitoring method is applied to a terminal, and the method comprises: determining a minimum time interval, the minimum time interval being a time interval between the terminal sending a PRACH resource and the terminal monitoring a random access search space; and determining a random access search space for monitoring a physical downlink control channel (PDCCH) based on the minimum time interval. The present disclosure redefines a time interval between the terminal sending a PRACH resource and the terminal monitoring a random access search space, so that the time interval can include a switching delay between uplink and downlink of the terminal.

Description

[0001] This application is a divisional application of the original application with the application number 202180000885.3 and the filing date of March 23, 2021, and the title of "A search space monitoring method, a search space monitoring device and a storage medium". TECHNICAL FIELD

[0002] The present disclosure relates to the technical field of wireless communication, and particularly relates to a search space monitoring method, a search space monitoring device and a storage medium. BACKGROUND

[0003] In a new generation of communication technology, a terminal can work based on a bandwidth part (BWP). That is, the terminal does not need to monitor the entire bandwidth, and needs to perform data transmission and reception on a part of the system bandwidth. In a time division duplexing (TDD) system, since the transmission and reception of uplink and downlink data can share the same bandwidth part, in order to reduce the switching delay of uplink and downlink, it is required that the downlink (DL) BWP and the uplink (UL) BWP have the same center frequency.

[0004] For a reduced capability (Redcap) terminal, the Redcap terminal can monitor a downlink initial bandwidth part (DL initial BWP). However, the initial uplink bandwidth part (UL initial BWP) can be beyond the bandwidth range monitored by the Redcap terminal. Based on this, in the related art, for the Redcap terminal, a separate initial uplink BWP is configured, or a physical random access channel (PRACH) resource corresponding to a synchronization signal block (SSB) with the best measurement quality is monitored. Therefore, the center frequencies of the uplink resource and the downlink resource monitored by the Redcap terminal are different, resulting in a relatively large switching delay of uplink and downlink. The interval between the time when the terminal sends the PRACH and the time when the terminal monitors the random access search space cannot include the switching delay of uplink and downlink. SUMMARY

[0005] In order to overcome the problems in the related art, the present disclosure provides a search space monitoring method, a search space monitoring device and a storage medium.

[0006] According to a first aspect of the embodiments of the present disclosure, a search space monitoring method is provided, the method is performed by a terminal, and the method comprises:

[0007] determining a minimum time interval, the minimum time interval being a time interval from transmitting a physical random access channel (PRACH) resource to monitoring a random access search space; and determining, based on the minimum time interval, a random access search space for monitoring a physical downlink control channel (PDCCH).

[0008] In an embodiment, the minimum time interval includes a plurality of minimum time intervals, the plurality of minimum time intervals including a first minimum time interval and a second minimum time interval.

[0009] The first minimum time interval corresponds to a first performance condition of the terminal, and the second minimum time interval corresponds to a second performance condition of the terminal; wherein a terminal capability corresponding to the first performance condition is greater than a terminal capability corresponding to the second performance condition; and the first minimum time interval is less than the second minimum time interval.

[0010] In an embodiment, the determining, based on the minimum time interval, the random access search space for monitoring the PDCCH includes:

[0011] monitoring the random access search space after the first minimum time interval if the terminal satisfies the first performance condition;

[0012] or

[0013] monitoring the random access search space after the second minimum time interval if the terminal satisfies the second performance condition.

[0014] In an embodiment, the minimum time interval includes a plurality of minimum time intervals, the plurality of minimum time intervals including a first minimum time interval and a second minimum time interval.

[0015] The determining, based on the minimum time interval, the random access search space for monitoring the PDCCH includes:

[0016] determining a handover time delay of the terminal; and determining, based on a size relationship between the handover time delay and the minimum time interval, a start time of the random access search space for monitoring the PDCCH.

[0017] In an embodiment, the handover time delay includes a first handover time delay and a second handover time delay.

[0018] The first handover time delay corresponds to a first performance condition of the terminal, and the second handover time delay corresponds to a second performance condition of the terminal; wherein a terminal capability corresponding to the first performance condition is greater than a terminal capability corresponding to the second performance condition; and the first handover time delay is less than the second handover time delay.

[0019] In an embodiment, the determining, based on the size relationship between the handover time delay and the minimum time interval, the start time of the random access search space for monitoring the PDCCH includes:

[0020] If the terminal satisfies a first performance condition, determining a starting time of monitoring the random access search space of the PDCCH based on a first partial random access search space or a non-first random access search space after the minimum time interval, wherein the first switching delay is greater than the minimum time interval.

[0021] In an implementation form, the determining the starting time of monitoring the random access search space of the PDCCH based on the size relationship between the switching delay and the minimum time interval comprises:

[0022] If the terminal satisfies a second performance condition, determining a starting time of monitoring the random access search space of the PDCCH based on a first partial random access search space or a non-first random access search space after the minimum time interval in response to the second switching delay being greater than the minimum time interval, wherein the second switching delay is greater than the minimum time interval.

[0023] In an implementation form, the method further comprises:

[0024] determining a first random access response search space corresponding to a first random access search space after the minimum time interval; and determining a random access response window based on a starting time of the first random access response search space as a reference time.

[0025] In an implementation form, the first performance condition or the second performance condition comprises at least one of:

[0026] a terminal type; and

[0027] a center frequency of a terminal uplink resource and a terminal downlink resource.

[0028] According to a second aspect of embodiments of the present disclosure, a search space monitoring method is provided, the method is performed by a network side device, and the method comprises:

[0029] determining a minimum time interval, the minimum time interval being a time interval between a terminal sending a PRACH resource and the terminal monitoring a random access search space; and determining a random access search space of sending a PDCCH based on the minimum time interval.

[0030] In an implementation form, the minimum time interval comprises a plurality of minimum time intervals, the plurality of minimum time intervals comprising a first minimum time interval and a second minimum time interval; the first minimum time interval corresponds to a first performance condition of the terminal, and the second minimum time interval corresponds to a second performance condition of the terminal; wherein a terminal capability corresponding to the first performance condition is greater than a terminal capability corresponding to the second performance condition; and the first minimum time interval is less than the second minimum time interval.

[0031] In an embodiment, the determining the random access search space for transmitting the PDCCH based on the minimum time interval comprises:

[0032] If the terminal satisfies the first performance condition, transmitting the PDCCH based on the random access search space after the first minimum time interval;

[0033] or

[0034] If the terminal satisfies the second performance condition, transmitting the PDCCH based on the random access search space after the second minimum time interval.

[0035] In an embodiment, the minimum time interval comprises one minimum time interval;

[0036] The determining the random access search space for transmitting the PDCCH based on the minimum time interval comprises:

[0037] Determining a handover time delay of the terminal, and determining a start time of the random access search space for transmitting the PDCCH based on a size relationship between the handover time delay and the minimum time interval.

[0038] In an embodiment, the handover time delay comprises a first handover time delay and a second handover time delay;

[0039] The first handover time delay corresponds to a first performance condition of the terminal, and the second handover time delay corresponds to a second performance condition of the terminal; wherein the terminal capability corresponding to the first performance condition is greater than the terminal capability corresponding to the second performance condition; and the first handover time delay is less than the second handover time delay.

[0040] In an embodiment, the method further comprises:

[0041] Determining a first random access response search space corresponding to a first random access search space after the minimum time interval, and determining a random access response window based on a start time of the first random access response search space as a reference time.

[0042] In an embodiment, the first performance condition and the second performance condition comprise at least one of:

[0043] a terminal type; and

[0044] a center frequency of uplink resources and downlink resources of the terminal.

[0045] According to a third aspect of embodiments of the present disclosure, a search space monitoring apparatus comprises:

[0046] determining a minimum time interval, the minimum time interval being a time interval between transmitting a PRACH resource and monitoring a random access search space; and monitoring a random access search space based on the minimum time interval.

[0047] In an embodiment, the minimum time interval includes a plurality of minimum time intervals, the plurality of minimum time intervals including a first minimum time interval and a second minimum time interval; the first minimum time interval corresponding to a first performance condition of the terminal, the second minimum time interval corresponding to a second performance condition of the terminal; wherein the first performance condition corresponds to a terminal capability greater than a terminal capability corresponding to the second performance condition; and the first minimum time interval is less than the second minimum time interval.

[0048] In an embodiment, the monitoring module is configured to monitor a random access search space after the first minimum time interval if the terminal satisfies the first performance condition.

[0049] or

[0050] monitor a random access search space after the second minimum time interval if the terminal satisfies the second performance condition.

[0051] In an embodiment, the minimum time interval includes a plurality of minimum time intervals, the plurality of minimum time intervals including a first minimum time interval and a second minimum time interval; the first minimum time interval corresponding to a first performance condition of the terminal, the second minimum time interval corresponding to a second performance condition of the terminal; wherein the first performance condition corresponds to a terminal capability greater than a terminal capability corresponding to the second performance condition; and the first minimum time interval is less than the second minimum time interval.

[0052] monitoring a random access search space based on a starting time of the random access search space, the starting time being determined based on a relationship between a handover time delay of the terminal and the minimum time interval.

[0053] In an embodiment, the handover time delay includes a first handover time delay and a second handover time delay.

[0054] the first handover time delay corresponding to a first performance condition of the terminal, the second handover time delay corresponding to a second performance condition of the terminal; wherein the first performance condition corresponds to a terminal capability greater than a terminal capability corresponding to the second performance condition; and the first handover time delay is less than the second handover time delay.

[0055] In an embodiment, the monitoring module is configured to determine a starting time of the random access search space based on a first partial random access search space or a non-first random access search space after the minimum time interval if the terminal satisfies the first performance condition, wherein the first handover time delay is greater than the minimum time interval.

[0056] In an embodiment, the monitoring module is configured to determine a starting time of monitoring a random access search space of a PDCCH based on a first random access search space after the minimum time interval or a non-first random access search space, in response to the second switching time delay being greater than the minimum time interval, if the terminal satisfies a second performance condition, wherein the second switching time delay is greater than the minimum time interval.

[0057] In an embodiment, the determining module is further configured to:

[0058] determine a first random access response search space corresponding to the first random access search space after the minimum time interval; and determine a random access response window based on a starting time of the first random access response search space as a reference time.

[0059] In an embodiment, the first performance condition or the second performance condition comprises at least one of:

[0060] a terminal type; and

[0061] a center frequency of a terminal uplink resource and a terminal downlink resource.

[0062] According to a fourth aspect of embodiments of the present disclosure, a search space monitoring apparatus is provided, and the apparatus comprises:

[0063] a determining module configured to determine a minimum time interval, the minimum time interval being a time interval between sending a PRACH resource and monitoring a random access search space;

[0064] a sending module configured to determine a random access search space of a PDCCH based on the minimum time interval.

[0065] In an embodiment, the minimum time interval comprises a plurality of minimum time intervals, the plurality of minimum time intervals comprising a first minimum time interval and a second minimum time interval; the first minimum time interval corresponds to a first performance condition of the terminal, and the second minimum time interval corresponds to a second performance condition of the terminal; wherein a terminal capability corresponding to the first performance condition is greater than a terminal capability corresponding to the second performance condition; and the first minimum time interval is less than the second minimum time interval.

[0066] In an embodiment, the sending module is configured to send the PDCCH based on a random access search space after the first minimum time interval, if the terminal satisfies the first performance condition.

[0067] or

[0068] send the PDCCH based on a random access search space after the second minimum time interval, if the terminal satisfies the second performance condition.

[0069] In an embodiment, the minimum time interval comprises a minimum time interval.

[0070] The sending module is configured to determine a handover delay of the terminal; and determine a starting time of a random access search space for sending a PDCCH based on a size relationship between the handover delay and the minimum time interval.

[0071] In an embodiment, the handover delay comprises a first handover delay and a second handover delay; the first handover delay corresponds to a first performance condition of the terminal, and the second handover delay corresponds to a second performance condition of the terminal; the terminal capability corresponding to the first performance condition is greater than the terminal capability corresponding to the second performance condition; and the first handover delay is less than the second handover delay.

[0072] In an embodiment, the determining module is further configured to:

[0073] determine a first random access response search space corresponding to a first random access search space after the minimum time interval; and determine a random access response window based on a starting time of the first random access response search space as a reference time.

[0074] In an embodiment, the first performance condition and the second performance condition comprise at least one of the following:

[0075] a terminal type; and

[0076] a center frequency of an uplink resource and a downlink resource of the terminal.

[0077] According to a fifth aspect of embodiments of the present disclosure, a communication apparatus is provided, and the apparatus comprises a processor and a memory, the memory storing a computer program, and the processor executes the computer program stored in the memory, so that the apparatus performs the method in the first aspect or any one of the implementation forms of the first aspect.

[0078] According to a sixth aspect of embodiments of the present disclosure, a communication apparatus is provided, and the apparatus comprises a processor and a memory, the memory storing a computer program, and the processor executes the computer program stored in the memory, so that the apparatus performs the method in the second aspect or any one of the implementation forms of the second aspect.

[0079] The search space monitoring method in the second aspect or any one of the implementation forms of the second aspect.

[0080] According to a seventh aspect of embodiments of the present disclosure, a computer readable storage medium is provided, and the medium stores instructions, when the instructions are executed, the method in the first aspect or any one of the implementation forms of the first aspect is implemented.

[0081] According to an eighth aspect of the embodiments of the present disclosure, a computer-readable storage medium is provided for storing instructions, when the instructions are executed, causing the method as described in the second aspect or any one of the implementation forms of the second aspect to be implemented.

[0082] The technical solutions provided by the embodiments of the present disclosure can have the following beneficial effects: different switching time intervals are configured for different terminals according to the present disclosure, or monitoring of part of the random access search space is abandoned. A minimum time interval for a terminal to switch uplink is defined, and it is ensured that the terminal can monitor the physical downlink control channel (PDCCH) containing the random access response.

[0083] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0084] The accompanying drawings, which are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present disclosure and, together with the specification, serve to explain the principles of the present disclosure.

[0085] Figure 1 is a communication system architecture diagram of a network device and a terminal according to an exemplary embodiment.

[0086] Figure 2 is a schematic diagram of configuring a separate initial uplink BWP for a Redcap terminal according to an exemplary embodiment.

[0087] Figure 3 is a schematic diagram of configuring a monitoring part of the initial uplink BWP for a Redcap terminal according to an exemplary embodiment.

[0088] Figure 4 is a flowchart of a search space monitoring method according to an exemplary embodiment.

[0089] Figure 5 is a flowchart of another search space monitoring method according to an exemplary embodiment.

[0090] Figure 6 is a flowchart of another search space monitoring method according to an exemplary embodiment.

[0091] Figure 7 is a flowchart of another search space monitoring method according to an exemplary embodiment.

[0092] Figure 8is a flowchart of yet another search space monitoring method according to an example embodiment.

[0093] Figure 9 is a flowchart of yet another search space monitoring method according to an example embodiment.

[0094] Figure 10 is a flowchart of yet another search space monitoring method according to an example embodiment.

[0095] Figure 11 is a flowchart of yet another search space monitoring method according to an example embodiment.

[0096] Figure 12 is a flowchart of yet another search space monitoring method according to an example embodiment.

[0097] Figure 13 is a flowchart of yet another search space monitoring method according to an example embodiment.

[0098] Figure 14 is a flowchart of yet another search space monitoring method according to an example embodiment.

[0099] Figure 15 is a flowchart of yet another search space monitoring method according to an example embodiment.

[0100] Figure 16 is a block diagram of a search space monitoring apparatus according to an example embodiment.

[0101] Figure 17 is a block diagram of yet another search space monitoring apparatus according to an example embodiment.

[0102] Figure 18 is a block diagram of a search space monitoring apparatus according to an example embodiment.

[0103] Figure 19 is a block diagram of yet another search space monitoring apparatus according to an example embodiment. DETAILED DESCRIPTION

[0104] The example embodiments will be described in detail herein with reference to the attached drawings. The description of the example embodiments is intended to apply to all alternative modifications and variations of these example embodiments, unless it is otherwise indicated. Furthermore, to the extent that the terms "comprises", "comprising", "including", and "includes" are used in either the detailed description or the claims, such terms are intended to be inclusive in a manner similar to that of the term "comprising" as an open transition term with the same scope. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this example embodiment belongs. The terms "coupled" and "coupling" as used herein refer to an electrical, mechanical, or fluidic connection between two components. The connection can be direct or through one or more intermediate components. The connection can be permanent or releasable. The connection can be electrical, mechanical, or fluidic. The connection can be wired or wireless. The connection can be active or passive. The connection can be direct or through one or more intermediate components. The connection can be permanent or releasable. The connection can be electrical, mechanical, or fluidic. The connection can be wired or wireless. The connection can be active or passive.

[0105] Figure 1is a network device and terminal communication system architecture diagram shown according to an exemplary embodiment. The communication method provided by the present disclosure can be applied to Figure 1 The communication system architecture diagram shown in FIG. 1. As shown in FIG. 1, the network side device can send signaling based on the architecture shown in FIG. 2. Figure 1 The network side device can send signaling based on the architecture shown in FIG. 2. Figure 1 The network side device can send signaling based on the architecture shown in FIG. 2.

[0106] It can be understood that, Figure 1 The network device and terminal communication system shown in FIG. 1 is only illustrative, and other network devices can also be included in the wireless communication system, such as core network devices, wireless relay devices, and wireless backhaul devices, etc., which are not shown in FIG. 1. The number of network devices and the number of terminals included in the wireless communication system are not limited in the embodiments of the present disclosure. Figure 1

[0107] It can be further understood that the wireless communication system of the embodiments of the present disclosure is a network that provides wireless communication function. The wireless communication system can use different communication technologies, such as code division multiple access (CDMA), wideband code division multiple access (WCDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency division multiple access (OFDMA), single carrier frequency division multiple access (SC-FDMA), carrier sense multiple access with collision avoidance. According to different network capacity, rate, delay and other factors, the network can be divided into 2G (English: generation) network, 3G network, 4G network or future evolution network, such as 5G network, which can also be called new radio network (New Radio, NR). For the convenience of description, the wireless communication network is sometimes referred to as network in the present disclosure.

[0108] ​Further, the network device involved in the present disclosure can also be referred to as a wireless access network device. The wireless access network device can be a base station, an evolved node B (eNB), a home base station, an access point (AP) in a wireless fidelity (WiFi) system, a wireless relay node, a wireless backhaul node, a transmission point (TP), a transmission and reception point (TRP), etc., and can also be a gNB in an NR system, or can also be a component or a part of a device constituting a base station, etc. When it is a vehicle-to-everything (V2X) communication system, the network device can also be a vehicle-mounted device. It should be understood that the specific technology and specific device form adopted by the network device in the embodiments of the present disclosure are not limited.

[0109] Further, the terminal involved in the present disclosure can also be referred to as a terminal device, a user equipment (UE), a mobile station (MS), a mobile terminal (MT), etc., and is a device that provides voice and / or data connectivity for a user, for example, a handheld device having wireless connection function, a vehicle-mounted device, etc. At present, some examples of the terminal are: a mobile phone, a pocket personal computer (PPC), a palm computer, a personal digital assistant (PDA), a notebook computer, a tablet computer, a wearable device, or a vehicle-mounted device, etc. In addition, when it is a vehicle-to-everything (V2X) communication system, the terminal device can also be a vehicle-mounted device. It should be understood that the specific technology and specific device form adopted by the terminal in the embodiments of the present disclosure are not limited.

[0110] In a new generation communication technology, a terminal can work based on a BWP. That is, the terminal does not need to monitor the entire bandwidth, and needs to perform data transmission and reception on a part of the system bandwidth. In a TDD system, since the transmission and reception of uplink and downlink data can share the same bandwidth part. Therefore, in order to reduce the delay of uplink and downlink switching, it is required that the downlink BWP and the uplink BWP have the same center frequency point.

[0111] For a Redcap terminal, the capability of the Redcap terminal can monitor an initial downlink BWP. However, the initial uplink BWP can be out of the bandwidth range monitored by the Redcap terminal. Based on this, in the related art, two solutions are proposed for the Redcap terminal.

[0112] In one way, please refer toFigure 2 , Figure 2 is a schematic diagram for configuring separate initial uplink BWP for Redcap terminal according to an example embodiment. As shown in Figure 2 , separate initial uplink BWP is configured for Redcap terminal.

[0113] In one way, please refer to Figure 3 , Figure 3 is a schematic diagram for configuring monitoring part of initial uplink BWP for Redcap terminal according to an example embodiment. As shown in Figure 3 , the Redcap terminal is configured to monitor the physical random access channel (PRACH) resource corresponding to the SSB with the best measurement quality. For example, the PRACH resource #1 corresponds to the first type of Redcap terminal, and the PRACH resource #2 corresponds to the second type of Redcap terminal.

[0114] Therefore, the center frequencies of the uplink resources and the downlink resources monitored by the Redcap terminal are not the same. In the related art TDD system, the switching delay of the terminal's uplink and downlink is defined based on the fact that the center frequencies of the uplink and downlink resources monitored by the terminal are the same, as shown in Table 1 below.

[0115] Table 1

[0116] Switching latency FR1 (Ts) FR2 (Ts) NTx-Rx 25600 13792 NTx-Rx 25600 13792

[0117] It can be understood that each element in Table 1 exists independently, and these elements are exemplarily listed in the same table, but it does not mean that all elements in the table must exist at the same time as shown in the table. The value of each element is independent of the value of any other element in Table 1. Therefore, those skilled in the art can understand that the value of each element in Table 1 is an independent embodiment.

[0118] The Redcap terminal uses the above-mentioned embodiments to monitor the uplink BWP and the downlink BWP, and the center frequencies of the uplink resources and the downlink resources are not the same, which results in a relatively large switching delay of the uplink and the downlink. When the center frequencies of the uplink resources and the downlink resources are the same, the maximum switching delay of the uplink and the downlink is larger. In some cases, it may increase by about 50us ~ 200us.

[0119] After the terminal sends the PRACH, it needs to monitor the random access search space. In the related art communication protocol, the interval between PRACH and random access search space is defined, for example, 1 Orthogonal Frequency Division Multiplexing (OFDM) symbol.

[0120] However, if the center frequencies of the uplink resource and the downlink resource of the Redcap terminal are different, the defined interval cannot contain the switching delay of the uplink and the downlink of the Redcap terminal.

[0121] Based on the above problems, the present disclosure provides a search space monitoring method. It is proposed to configure different minimum time intervals for terminals with different performance conditions, or for terminals to determine the monitored random access search space according to the switching delay of the uplink and the downlink, to avoid the uncertainty of terminal behavior.

[0122] Figure 4 FIG. 1 is a flowchart of a search space monitoring method according to an exemplary embodiment. As shown in FIG. 1, the search space monitoring method is performed by a terminal and includes the following steps. Figure 4

[0123] In step S11, a minimum time interval is determined.

[0124] In the embodiments of the present disclosure, the minimum time interval configuration can include one or more minimum time intervals, and the minimum time interval is the time interval between the terminal sending a PRACH resource and the terminal monitoring a random access search space.

[0125] In step S12, based on the minimum time interval, a random access search space for monitoring a PDCCH is determined.

[0126] In the embodiments of the present disclosure, the terminal determines the minimum time interval containing the uplink and downlink switching delay of the terminal in one or more minimum time intervals. After determining the minimum time interval, the random access search space is monitored, and based on the random access search space, the PDCCH is monitored. The random access response is received based on the monitored PDCCH.

[0127] In some embodiments of the present disclosure, a network side device can configure multiple minimum time intervals for a terminal, and the terminal can determine the corresponding minimum time interval according to its own performance condition. The performance condition of the terminal can include a first performance condition and a second performance condition. The multiple minimum time intervals can include two minimum time intervals, a first minimum time interval and a second minimum time interval. The first minimum time interval and the second minimum time interval can be determined based on a communication protocol.

[0128] In some embodiments of the present disclosure, the first minimum time interval corresponds to the first performance condition of the terminal, and the second minimum time interval corresponds to the second performance of the terminal. The terminal capability corresponding to the first performance condition is greater than the terminal capability corresponding to the second performance condition. The first minimum time interval is less than the second minimum time interval.

[0129] Figure 5 ​is a flow chart of a search space monitoring method according to an example embodiment. As shown in Figure 5 The search space monitoring method is performed by a terminal and includes the following steps.

[0130] In step S21, if the terminal satisfies a first performance condition, the terminal monitors a random access search space after a first minimum time interval.

[0131] In some embodiments of the present disclosure, as in the above embodiments, the first performance condition of the terminal corresponds to the first minimum time interval. If the terminal satisfies the first performance condition, the terminal monitors the random access search space after the first minimum time interval and further receives the PDCCH.

[0132] For example, the terminal satisfies the first performance condition when the center frequency of the uplink resource used by the terminal is the same as the center frequency of the downlink resource monitored. In response to the center frequency of the uplink resource used by the terminal being the same as the center frequency of the downlink resource monitored, the terminal determines to monitor the random access search space after the first minimum time interval and further receives the PDCCH.

[0133] For example, the terminal satisfies the first performance condition when the terminal is a first type terminal. In response to the terminal being the first type terminal, the terminal determines to monitor the random access search space after the first minimum time interval and further receives the PDCCH. The first type terminal can be a normal terminal with relatively high communication capability.

[0134] Figure 6 is a flow chart of a search space monitoring method according to an example embodiment. As shown in Figure 6 The search space monitoring method is performed by a terminal and includes the following steps.

[0135] In step S31, if the terminal satisfies a second performance condition, the terminal monitors a random access search space after a second minimum time interval.

[0136] In some embodiments of the present disclosure, as in the above embodiments, the second performance condition of the terminal corresponds to the second minimum time interval. If the terminal satisfies the second performance condition, the terminal monitors the random access search space after the second minimum time interval and further receives the PDCCH.

[0137] For example, the terminal satisfies the second performance condition when the center frequency of the uplink resource used by the terminal is different from the center frequency of the downlink resource monitored. In response to the center frequency of the uplink resource used by the terminal being different from the center frequency of the downlink resource monitored, the terminal determines to monitor the first random access search space after the second minimum time interval and further receives the PDCCH.

[0138] For example, the terminal satisfying the first performance condition can be a terminal of a first type. In response to the terminal being of the first type, the terminal is determined to monitor a first random access search space after a second minimum time interval and further receive the PDCCH. The first type of terminal can be a normal terminal with relatively high communication capability.

[0139] In an embodiment of the present disclosure, in response to the minimum time interval including a plurality of minimum time intervals, for example, the plurality of minimum time intervals including a first minimum time interval and a second minimum time interval, the network-side device determines the PDCCH scheduling the random access response to be transmitted in a random access search space after the first minimum time interval or the second minimum time interval.

[0140] In some embodiments of the present disclosure, the minimum time interval can also include one minimum time interval. The minimum time interval is the time interval between the transmission of the PRACH resource and the monitoring of the random access search space by the terminal. The minimum time interval can be determined based on the communication protocol.

[0141] Figure 7 FIG. 1 is a flowchart of a search space monitoring method according to an exemplary embodiment. As shown in FIG. 1, the search space monitoring method is performed by a terminal and includes the following steps. Figure 7

[0142] In step S41, the switching delay of the terminal is determined.

[0143] In an embodiment of the present disclosure, the terminal determines the switching delay for uplink and downlink switching according to its own performance condition. The performance condition of the terminal includes a first performance condition and a second performance condition.

[0144] In step S42, the starting time of the random access search space for monitoring the PDCCH is determined based on the size relationship between the switching delay and the minimum time interval.

[0145] In an embodiment of the present disclosure, the terminal compares the determined switching delay with the minimum time interval determined according to the communication protocol. The starting time of the random access search space for monitoring the PDCCH is determined according to the size relationship between the switching delay of the terminal for uplink and downlink switching and the minimum time interval.

[0146] ​In response to the switching delay being greater than the minimum time interval, a starting time of the random access search space for monitoring the PDCCH is determined based on a part of the earliest occurring random access search space. Alternatively, in response to the switching delay being greater than the minimum time interval, a starting time of the random access search space for monitoring the PDCCH is determined based on a next random access search space of the earliest occurring random access search space. In response to the switching delay being less than or equal to the minimum time interval, after the minimum time interval is monitored, a starting time of the random access search space for monitoring the PDCCH is determined based on the earliest occurring random access search space.

[0147] In some embodiments of the present disclosure, the switching delay for the terminal to perform uplink and downlink switching can include multiple switching delays. The multiple switching delays can include a first switching delay and a second switching delay.

[0148] In some embodiments of the present disclosure, the first switching delay corresponds to a first performance condition of the terminal, and the second switching delay corresponds to a second performance condition of the terminal. The terminal capability corresponding to the first performance condition is greater than the terminal capability corresponding to the second performance condition. The first switching delay is less than the second switching delay.

[0149] Figure 8 FIG. 1 is a flowchart of a search space monitoring method according to an exemplary embodiment. As shown in FIG. 1, the search space monitoring method is performed by a terminal and includes the following steps. Figure 8

[0150] In step S51, if the terminal satisfies the first performance condition, a starting time of the random access search space for monitoring the PDCCH is determined based on a first part of the random access search space or a non-first part of the random access search space after the minimum time interval.

[0151] In the embodiments of the present disclosure, as in the above embodiments, the first performance condition of the terminal corresponds to the first switching delay. In response to the first switching delay of the terminal being greater than the minimum time interval, the terminal determines a starting time of the random access search space for monitoring the PDCCH based on a part of the first random access search space after the minimum time interval. Alternatively, in response to the first switching delay of the terminal being greater than the minimum time interval, the terminal determines a starting time of the random access search space for monitoring the PDCCH based on a non-first random access search space after the minimum time interval. Further, the PDCCH is received in the monitored random access search space, and a random access response is determined. In other words, in response to the first switching delay of the terminal being greater than the minimum time interval, it is determined to abandon monitoring the earliest random access search space after the minimum time interval. Alternatively, in response to the first switching delay of the terminal being greater than the minimum time interval, it is determined to abandon monitoring the earliest part of the random access search space after the minimum time interval.

[0152] ​Exemplarily, the first performance condition of the terminal can be that a center frequency of an uplink resource used by the terminal is same as a center frequency of a downlink resource monitored by the terminal. If the center frequency of the uplink resource used by the terminal is same as the center frequency of the downlink resource monitored by the terminal, and the first switching time delay is greater than the minimum time interval, the terminal determines the starting time of the random access search space for monitoring the PDCCH based on a part of the random access search space after the first random access search space after the minimum time interval. Or, in response to the first switching time delay of the terminal being greater than the minimum time interval, the terminal determines the starting time of the random access search space for monitoring the PDCCH based on the non-first random access search space after the minimum time interval. Further, the PDCCH is received, and the random access response is determined.

[0153] Exemplarily, the first performance condition of the terminal can be that the terminal type is a first type terminal. In response to the terminal being the first type terminal, and the first switching time delay being greater than the minimum time interval, the terminal determines the starting time of the random access search space for monitoring the PDCCH based on a part of the random access search space after the first random access search space after the minimum time interval. Or, in response to the first switching time delay of the terminal being greater than the minimum time interval, the terminal determines the starting time of the random access search space for monitoring the PDCCH based on the non-first random access search space after the minimum time interval. The PDCCH is received, and the random access response is determined.

[0154] Figure 9 A flow chart of a search space monitoring method is shown according to an exemplary embodiment. As shown in Figure 9 the search space monitoring method is performed by a terminal, including the following steps.

[0155] In step S61, if the terminal meets the second performance condition, the starting time of the random access search space for monitoring the PDCCH is determined based on the first part random access search space or the non-first random access search space after the minimum time interval.

[0156] In the embodiments of the present disclosure, as in the above embodiments, the second performance condition of the terminal corresponds to the second switching delay. In response to the second switching delay of the terminal being greater than the minimum time interval, the terminal determines the starting time of the random access search space for monitoring the PDCCH based on a part of the first random access search space after the minimum time interval. Alternatively, in response to the second switching delay of the terminal being greater than the minimum time interval, the terminal determines the starting time of the random access search space for monitoring the PDCCH based on the non-first random access search space after the minimum time interval. The PDCCH is received in the monitored random access search space, and the random access response is determined. In other words, in response to the second switching delay of the terminal being greater than the minimum time interval, it is determined to abandon monitoring the earliest random access search space after the minimum time interval. Alternatively, in response to the second switching delay of the terminal being greater than the minimum time interval, it is determined to abandon monitoring the earliest part of the random access search space after the minimum time interval.

[0157] For example, the second performance condition of the terminal can be that the center frequency of the uplink resource used by the terminal is the same as the center frequency of the monitored downlink resource. If the center frequency of the uplink resource used by the terminal is the same as the center frequency of the monitored downlink resource, and the second switching delay is greater than the minimum time interval, the terminal determines the starting time of the random access search space for monitoring the PDCCH based on a part of the first random access search space after the minimum time interval. Alternatively, in response to the second switching delay of the terminal being greater than the minimum time interval, the terminal determines the starting time of the random access search space for monitoring the PDCCH based on the non-first random access search space after the minimum time interval. The PDCCH is received, and the random access response is determined.

[0158] For example, the second performance condition of the terminal can be that the terminal type is a second type terminal. In response to the terminal being a second type terminal and the second switching delay being greater than the minimum time interval, the terminal determines the starting time of the random access search space for monitoring the PDCCH based on a part of the first random access search space after the minimum time interval. Alternatively, in response to the second switching delay of the terminal being greater than the minimum time interval, the terminal determines the starting time of the random access search space for monitoring the PDCCH based on the non-first random access search space after the minimum time interval. Further, the PDCCH is received, and the random access response is determined.

[0159] Figure 10 FIG. 1 is a flowchart of a search space monitoring method according to an exemplary embodiment. As shown in FIG. 1, the search space monitoring method is performed by a terminal and includes the following steps. Figure 10

[0160] ​In step S71, a first random access response search space corresponding to a first random access search space after a minimum time interval is determined.

[0161] In step S72, a random access response window is determined based on a starting time of the first random access response search space as a reference time.

[0162] In the embodiments of the present disclosure, the terminal determines a first random access response search space corresponding to a first random access search space after a minimum time interval. The random access response window is determined to start from a starting time of the random access response search space corresponding to the first random access search space.

[0163] In the embodiments of the present disclosure, the first performance condition and the second performance condition include at least one of the following:

[0164] A terminal type; and

[0165] A center frequency of an uplink resource and a downlink resource of the terminal.

[0166] The terminal type can include a first type terminal and a second type terminal. The performance condition of the center frequency of the uplink resource and the downlink resource of the terminal can be that the center frequencies of the uplink resource and the downlink resource are the same, or that the center frequencies of the uplink resource and the downlink resource are different.

[0167] Based on the same concept, the embodiments of the present disclosure also provide a search space monitoring device.

[0168] Figure 11 A flowchart of a search space monitoring method according to an exemplary embodiment is shown. As shown in Figure 11 The search space monitoring method is performed by a network side device, including the following steps.

[0169] In step S81, a minimum time interval is determined.

[0170] In the embodiments of the present disclosure, the minimum time interval configuration can include one or more minimum time intervals, and the minimum time interval is a time interval between the terminal sending a PRACH resource and the terminal monitoring a random access search space.

[0171] In step S82, a random access search space for sending a PDCCH is determined based on the minimum time interval.

[0172] In the embodiments of the present disclosure, the network side determines one or more minimum time intervals, and further determines a minimum time interval of the terminal when performing uplink and downlink switching delay. After the minimum time interval is determined, the random access search space is monitored, and the PDCCH is sent based on the random access search space. The random access response is included in the sent PDCCH.

[0173] In some embodiments of the present disclosure, the network-side device can configure a plurality of minimum time intervals for the terminal, and the terminal can determine a corresponding minimum time interval according to its performance condition. The performance condition of the terminal can include a first performance condition and a second performance condition. The plurality of minimum time intervals can include two minimum time intervals, a first minimum time interval and a second minimum time interval. The first minimum time interval and the second minimum time interval can be determined based on a communication protocol.

[0174] In some embodiments of the present disclosure, the first minimum time interval corresponds to the first performance condition of the terminal, and the second minimum time interval corresponds to the second performance of the terminal. The terminal capability corresponding to the first performance condition is greater than the terminal capability corresponding to the second performance condition. The first minimum time interval is less than the second minimum time interval.

[0175] Figure 12 is a flowchart of a search space monitoring method according to an exemplary embodiment. As shown in Figure 5 , the search space monitoring method is performed by a network-side device, including the following steps.

[0176] In step S91, if the terminal satisfies the first performance condition, the PDCCH is sent based on the random access search space after the first minimum time interval.

[0177] In the embodiments of the present disclosure, as in the above-mentioned embodiments, the first performance condition of the terminal corresponds to the first minimum time interval. If the terminal satisfies the first performance condition, the random access search space after the first minimum time interval is monitored.

[0178] For example, the terminal satisfying the first performance condition can be that the center frequency of the uplink resource used by the terminal is the same as the center frequency of the downlink resource monitored. In response to the center frequency of the uplink resource used by the terminal being the same as the center frequency of the downlink resource monitored, it is determined to monitor the random access search space after the first minimum time interval, and further receive the PDCCH.

[0179] For example, the terminal satisfying the first performance condition can be that the terminal type is a first type terminal. In response to the terminal being a first type terminal, it is determined to monitor the random access search space after the first minimum time interval, and further receive the PDCCH. The first type terminal can be a normal terminal with relatively high communication capability.

[0180] Figure 13 is a flowchart of a search space monitoring method according to an exemplary embodiment. As shown in Figure 13 , the search space monitoring method is performed by a network-side device, including the following steps.

[0181] In step S101, if the terminal satisfies the second performance condition, the PDCCH is transmitted based on the random access search space after the second minimum time interval.

[0182] In some embodiments of the present disclosure, as in the above embodiments, the second performance condition of the terminal corresponds to the second minimum time interval. If the terminal satisfies the second performance condition, the PDCCH is further received by monitoring the random access search space after the second minimum time interval.

[0183] For example, the terminal satisfies the second performance condition can be that the center frequency of the uplink resource used by the terminal is different from the center frequency of the downlink resource monitored. In response to the center frequency of the uplink resource used by the terminal being different from the center frequency of the downlink resource monitored, it is determined to monitor the first random access search space after the second minimum time interval, and the PDCCH is further received.

[0184] For example, the terminal satisfies the first performance condition can be that the terminal type is a first type terminal. In response to the terminal being a first type terminal, it is determined to monitor the first random access search space after the second minimum time interval, and the PDCCH is further received. The first type terminal can be a normal terminal with relatively high communication capability.

[0185] In embodiments of the present disclosure, in response to the minimum time interval including a plurality, for example, the plurality of minimum time intervals include a first minimum time interval and a second minimum time interval. The network side device determines to transmit the PDCCH scheduling the random access response in the random access search space after the first minimum time interval or the second minimum time interval.

[0186] In some embodiments of the present disclosure, the minimum time interval can also include one minimum time interval. The minimum time interval is the time interval between the terminal transmitting the PRACH resource and the terminal monitoring the random access search space. The minimum time interval can be determined based on the communication protocol.

[0187] Figure 14 FIG. 1 is a flowchart of a search space monitoring method according to an exemplary embodiment. As shown in FIG. 1, the search space monitoring method is performed by a network side device, including the following steps. Figure 14

[0188] In step S111, the switching delay of the terminal is determined.

[0189] In embodiments of the present disclosure, the terminal determines the switching delay for uplink and downlink according to its own performance condition. The performance condition of the terminal includes a first performance condition and a second performance condition.

[0190] ​In step S112, based on the size relationship between the switching delay and the minimum time interval, the starting time of the random access search space in which the PDCCH is sent is determined.

[0191] In the embodiments of the present disclosure, the network side device sends the PDCCH for scheduling the random access response in the random access space after the minimum time interval. The terminal can compare the determined switching delay with the minimum time interval determined according to the communication protocol. The starting time of the random access search space in which the PDCCH is monitored is determined.

[0192] In some embodiments of the present disclosure, the terminal compares the determined switching delay with the minimum time interval determined according to the communication protocol. The starting time of the random access search space in which the PDCCH is monitored can be determined in the following ways.

[0193] In response to the terminal switching delay being greater than the minimum time interval, the starting time of the random access search space in which the PDCCH is monitored is determined based on a part of the earliest appearing random access search space. Alternatively, in response to the terminal switching delay being greater than the minimum time interval, the starting time of the random access search space in which the PDCCH is monitored is determined based on the next random access search space of the earliest appearing random access search space. In response to the terminal switching delay being less than or equal to the minimum time interval, the starting time of the random access search space in which the PDCCH is monitored is determined based on the earliest appearing random access search space.

[0194] In some embodiments of the present disclosure, the switching delay for the terminal to switch between uplink and downlink can include multiple switching delays. The multiple switching delays can include a first switching delay and a second switching delay.

[0195] In some embodiments of the present disclosure, the first switching delay corresponds to a first performance condition of the terminal, and the second switching delay corresponds to a second performance condition of the terminal. The terminal capability corresponding to the first performance condition is greater than the terminal capability corresponding to the second performance condition. The first switching delay is less than the second switching delay.

[0196] In the embodiments of the present disclosure, as in the above embodiments, the first performance condition of the terminal corresponds to the first switching delay. In response to the first switching delay of the terminal being greater than the minimum time interval, the terminal determines a starting time of the random access search space for monitoring the PDCCH based on a part of the first random access search space after the minimum time interval. Alternatively, in response to the first switching delay of the terminal being greater than the minimum time interval, the network side device determines the starting time of the random access search space for monitoring the PDCCH based on a non-first random access search space after the minimum time interval. Further, the terminal receives the PDCCH in the monitored random access search space to determine the random access response. In other words, in response to the first switching delay of the terminal being greater than the minimum time interval, it is determined to give up monitoring the earliest random access search space after the minimum time interval. Alternatively, in response to the first switching delay of the terminal being greater than the minimum time interval, it is determined to give up monitoring the earliest part of the random access search space after the minimum time interval.

[0197] For example, the first performance condition of the terminal can be that the center frequency of the uplink resource used by the terminal is the same as the center frequency of the downlink resource monitored. If the center frequency of the uplink resource used by the terminal is the same as the center frequency of the downlink resource monitored, and the first switching delay is greater than the minimum time interval, the terminal determines the starting time of the random access search space for monitoring the PDCCH based on a part of the first random access search space after the minimum time interval. Alternatively, in response to the first switching delay of the terminal being greater than the minimum time interval, the terminal determines the starting time of the random access search space for monitoring the PDCCH based on a non-first random access search space after the minimum time interval. Further, the PDCCH is received to determine the random access response.

[0198] For example, the first performance condition of the terminal can be that the terminal type is a first type terminal. In response to the terminal being a first type terminal and the first switching delay being greater than the minimum time interval, the terminal determines the starting time of the random access search space for monitoring the PDCCH based on a part of the first random access search space after the minimum time interval. Alternatively, in response to the first switching delay of the terminal being greater than the minimum time interval, the terminal determines the starting time of the random access search space for monitoring the PDCCH based on a non-first random access search space after the minimum time interval. Further, the PDCCH is received to determine the random access response.

[0199] In the embodiments of the present disclosure, as in the above embodiments, the second performance condition of the terminal corresponds to the second switching delay. In response to the second switching delay of the terminal being greater than the minimum time interval, the terminal determines the starting time of the random access search space for monitoring the PDCCH based on a part of the first random access search space after the minimum time interval. Alternatively, in response to the second switching delay of the terminal being greater than the minimum time interval, the terminal determines the starting time of the random access search space for monitoring the PDCCH based on the non-first random access search space after the minimum time interval. The PDCCH is received in the monitored random access search space, and the random access response is determined. In other words, in response to the second switching delay of the terminal being greater than the minimum time interval, it is determined to abandon monitoring the earliest random access search space after the minimum time interval. Alternatively, in response to the second switching delay of the terminal being greater than the minimum time interval, it is determined to abandon monitoring the earliest part of the random access search space after the minimum time interval.

[0200] For example, the second performance condition of the terminal can be that the center frequency of the uplink resource used by the terminal is the same as the center frequency of the monitored downlink resource. If the center frequency of the uplink resource used by the terminal is the same as the center frequency of the monitored downlink resource, and the second switching delay is greater than the minimum time interval, the terminal determines the starting time of the random access search space for monitoring the PDCCH based on a part of the first random access search space after the minimum time interval. Alternatively, in response to the second switching delay of the terminal being greater than the minimum time interval, the terminal determines the starting time of the random access search space for monitoring the PDCCH based on the non-first random access search space after the minimum time interval. Further, the PDCCH is received, and the random access response is determined.

[0201] For example, the second performance condition of the terminal can be that the terminal type is a second type terminal. In response to the terminal being a second type terminal and the second switching delay being greater than the minimum time interval, the terminal determines the starting time of the random access search space for monitoring the PDCCH based on a part of the first random access search space after the minimum time interval. Alternatively, in response to the second switching delay of the terminal being greater than the minimum time interval, the terminal determines the starting time of the random access search space for monitoring the PDCCH based on the non-first random access search space after the minimum time interval. Further, the PDCCH is received, and the random access response is determined.

[0202] Figure 15 FIG. 1 is a flowchart of a search space monitoring method according to an exemplary embodiment. As shown in FIG. 1, the search space monitoring method is performed by a network side device, and includes the following steps. Figure 10

[0203] ​In step S121, a first random access response search space corresponding to the first random access search space after the minimum time interval is determined.

[0204] In step S122, a random access response window is determined based on a starting time of the first random access response search space as a reference time.

[0205] In the embodiments of the present disclosure, the terminal determines a first random access response search space corresponding to the first random access search space after the minimum time interval. Further, a random access response window is determined to start from a starting time of the random access response search space corresponding to the first random access search space.

[0206] In the embodiments of the present disclosure, the first performance condition and the second performance condition include at least one of the following:

[0207] a terminal type; and

[0208] a center frequency of uplink and downlink resources of the terminal.

[0209] The terminal type can include a first type terminal and a second type terminal. The performance condition of the center frequency of the uplink and downlink resources of the terminal can be that the center frequencies of the uplink and downlink resources are the same, or that the center frequencies of the uplink and downlink resources are different.

[0210] Based on the same concept, the embodiments of the present disclosure also provide a search space monitoring apparatus.

[0211] It can be understood that the search space monitoring apparatus provided by the embodiments of the present disclosure includes the corresponding hardware structure and / or software module for executing each function in order to achieve the above functions. In combination with the units and algorithm steps of each example disclosed in the embodiments of the present disclosure, the embodiments of the present disclosure can be realized in the form of hardware or a combination of hardware and computer software. Whether a certain function is driven by hardware or computer software to drive hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the technical solutions of the embodiments of the present disclosure.

[0212] Figure 16 is a block diagram of a search space monitoring apparatus according to an exemplary embodiment. Referring to Figure 16 The search space monitoring apparatus 100 includes a determination module 101 and a monitoring module 102.

[0213] The determining module 101 is configured to determine a minimum time interval, the minimum time interval being a time interval between sending a PRACH resource and monitoring a random access search space. The monitoring module 102 is configured to determine, based on the minimum time interval, a random access search space for monitoring a PDCCH.

[0214] In an embodiment of the present disclosure, the minimum time interval includes a plurality of minimum time intervals, and the plurality of minimum time intervals include a first minimum time interval and a second minimum time interval. The first minimum time interval corresponds to a first performance condition of the terminal, and the second minimum time interval corresponds to a second performance condition of the terminal. The terminal capability corresponding to the first performance condition is greater than the terminal capability corresponding to the second performance condition. The first minimum time interval is less than the second minimum time interval.

[0215] In an embodiment of the present disclosure, the monitoring module 102 is configured to monitor, if the terminal satisfies the first performance condition, the random access search space after the first minimum time interval. Alternatively, the monitoring module 102 is configured to monitor, if the terminal satisfies the second performance condition, the random access search space after the second minimum time interval.

[0216] In an embodiment of the present disclosure, the minimum time interval includes a plurality of minimum time intervals, and the plurality of minimum time intervals include a first minimum time interval and a second minimum time interval. The first minimum time interval corresponds to a first performance condition of the terminal, and the second minimum time interval corresponds to a second performance condition of the terminal. The terminal capability corresponding to the first performance condition is greater than the terminal capability corresponding to the second performance condition. The first minimum time interval is less than the second minimum time interval.

[0217] The monitoring module 102 is configured to determine a handover time delay of the terminal. Based on a size relationship between the handover time delay and the minimum time interval, the monitoring module 102 is configured to determine a starting time of the random access search space for monitoring the PDCCH based on the random access search space.

[0218] In an embodiment of the present disclosure, the handover time delay includes a first handover time delay and a second handover time delay. The first handover time delay corresponds to a first performance condition of the terminal, and the second handover time delay corresponds to a second performance condition of the terminal. The terminal capability corresponding to the first performance condition is greater than the terminal capability corresponding to the second performance condition. The first handover time delay is less than the second handover time delay.

[0219] In an embodiment of the present disclosure, the monitoring module 102 is configured to determine, if the terminal satisfies the first performance condition, the starting time of the random access search space for monitoring the PDCCH based on a first partial random access search space or a non-first random access search space after the minimum time interval, where the first handover time delay is greater than the minimum time interval.

[0220] In an embodiment of the present disclosure, the monitoring module 102 is configured to determine, if the terminal satisfies the second performance condition, the starting time of the random access search space for monitoring the PDCCH based on a first partial random access search space or a non-first random access search space after the minimum time interval, in response to the second handover time delay being greater than the minimum time interval, where the second handover time delay is greater than the minimum time interval.

[0221] In the embodiments of the present disclosure, the determining module 101 is further configured to determine a first random access response search space corresponding to a first random access search space after a minimum time interval.

[0222] In the embodiments of the present disclosure, the first performance condition or the second performance condition comprises at least one of the following:

[0223] a terminal type, and

[0224] a center frequency of an uplink resource and a downlink resource of the terminal.

[0225] Figure 17 is a block diagram of a search space monitoring apparatus according to an exemplary embodiment. Referring to Figure 17 The search space monitoring apparatus 200 comprises a determining module 201 and a sending module 202.

[0226] The determining module 201 is configured to determine a minimum time interval, the minimum time interval being a time interval between sending a PRACH resource and monitoring a random access search space. The sending module 202 is configured to determine a random access search space for sending a PDCCH based on the minimum time interval.

[0227] In the embodiments of the present disclosure, the minimum time interval comprises a plurality of minimum time intervals, the plurality of minimum time intervals comprising a first minimum time interval and a second minimum time interval. The first minimum time interval corresponds to a first performance condition of the terminal, and the second minimum time interval corresponds to a second performance condition of the terminal. The terminal capability corresponding to the first performance condition is greater than the terminal capability corresponding to the second performance condition. The first minimum time interval is less than the second minimum time interval.

[0228] In the embodiments of the present disclosure, the sending module 202 is configured to send the PDCCH based on a random access search space after the first minimum time interval if the terminal satisfies the first performance condition, or send the PDCCH based on a random access search space after the second minimum time interval if the terminal satisfies the second performance condition.

[0229] In the embodiments of the present disclosure, the minimum time interval comprises one minimum time interval.

[0230] The sending module 202 is configured to determine a switching delay of the terminal. A starting time of the random access search space for sending the PDCCH is determined based on a size relationship between the switching delay and the minimum time interval.

[0231] In the embodiments of the present disclosure, the switching delay includes a first switching delay and a second switching delay. The first switching delay corresponds to a first performance condition of the terminal, and the second switching delay corresponds to a second performance condition of the terminal. The terminal capability corresponding to the first performance condition is greater than the terminal capability corresponding to the second performance condition. The first switching delay is less than the second switching delay.

[0232] In the embodiments of the present disclosure, the determining module 201 is further configured to determine a first random access response search space corresponding to a first random access search space after the minimum time interval. The random access response window is determined based on a starting time of the first random access response search space as a reference time.

[0233] In the embodiments of the present disclosure, the first performance condition and the second performance condition include at least one of the following:

[0234] a terminal type, and

[0235] a center frequency of an uplink resource and a downlink resource of the terminal.

[0236] With regard to the apparatus in the above embodiments, specific manners in which various modules perform operations have been described in detail in the embodiments of the method, and thus will not be described here in detail.

[0237] Figure 18 FIG. 3 is a block diagram of an apparatus 300 for search space monitoring according to an example embodiment. The apparatus 300 can be a mobile phone, a computer, a digital broadcast terminal, a message communication device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, and the like, for example.

[0238] Referring to Figure 18 , the apparatus 300 can include one or more of the following components: a processing component 302, a memory 304, a power supply component 306, a multimedia component 308, an audio component 310, an input / output (I / O) interface 312, a sensor component 314, and a communication component 316.

[0239] The processing component 302 generally controls the overall operations of the apparatus 300, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 302 can include one or more processors 320 to execute instructions to complete all or part of steps of the methods described above. In addition, the processing component 302 can include one or more modules to facilitate interaction between the processing component 302 and other components. For example, the processing component 302 can include a multimedia module to facilitate the interaction between the multimedia component 308 and the processing component 302.

[0240] The memory 304 is configured to store various types of data to support the operation of the device 300. Examples of such data include instructions for any application or method operating on the device 300, contact data, phonebook data, messages, pictures, videos, and the like. The memory 304 can be implemented by any type of volatile or nonvolatile storage devices or a combination thereof such as static random access memory (SRAM), electrically erasable programmable read only memory (EEPROM), erasable programmable read only memory (EPROM), programmable read only memory (PROM), read only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk.

[0241] The power component 306 provides power to the various components of the device 300. The power component 306 can include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the device 300.

[0242] The multimedia component 308 includes a screen providing an output interface between the device 300 and a user. In some embodiments, the screen can include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen can be implemented as a touch screen to receive input signals from a user. The touch panel includes one or more touch sensors to sense touch, swiping, and gestures on the touch panel. The touch sensors can not only sense a boundary of a touching or swiping action, but also detect duration and pressure related to the touching or swiping action. In some embodiments, the multimedia component 308 includes a front camera and / or a rear camera. The front and / or rear camera can receive external multimedia data when the device 300 is in an operation mode such as a photographing mode or a video mode. Each of the front and rear camera can be a fixed optical lens system or have a focal length and optical zoom capability.

[0243] The audio component 310 is configured to output and / or input audio signals. For example, the audio component 310 includes a microphone (MIC) that is configured to receive external audio signals when the device 300 is in an operation mode such as a call mode, a recording mode, and a voice recognition mode. The received audio signals can be further stored in the memory 304 or transmitted via the communication component 316. In some embodiments, the audio component 310 also includes a speaker for outputting audio signals.

[0244] The I / O interface 312 provides an interface between the processing component 302 and peripheral interface modules such as a keyboard, a click wheel, buttons, and the like. The buttons can include, but are not limited to, a home button, a volume button, a start button, and a lock button.

[0245] The sensor component 314 includes one or more sensors to provide status assessments for various aspects of the device 300. For example, the sensor component 314 can detect an open / closed status of the device 300, relative positioning of components, such as a display and keypad of the device 300, a change in position of the device 300 or a component of the device 300, presence or absence of user contact with the device 300, orientation or acceleration / deceleration of the device 300, and temperature changes of the device 300. The sensor component 314 can include a proximity sensor configured to detect presence of nearby objects without any physical contact. The sensor component 314 can also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor component 314 can further include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0246] The communication component 316 is configured to facilitate wired or wireless communication between the device 300 and another device. The device 300 can access a wireless network based on a communication standard, such as WiFi, 2G, or 3G, or a combination thereof. In an exemplary embodiment, the communication component 316 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 316 further includes a Near Field Communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on Radio Frequency Identification (RFID) technology, Infrared Data Association (IrDA) technology, Ultra-WideBand (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0247] In an exemplary embodiment, the device 300 can be implemented using 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, microcontrollers, or other electronic units to perform the above-described methods.

[0248] In an exemplary embodiment, a non-transitory computer-readable storage medium, such as the memory 304 including instructions, is also provided. The instructions can be executed by the processor 320 of the device 300 to perform the above-described methods. For example, the non-transitory computer-readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disc, and an optical data storage device, etc.

[0249] Figure 19 FIG. 4 is a block diagram of a device 400 according to an exemplary embodiment. For example, the device 400 can be provided as a server. Referring to FIG. 4, the device 400 includes a bus 410, a processor 420, a memory 430, a storage 440, an input interface 450, an output interface 460, a display 470, and a communication interface 480, which are communicatively coupled with each other. Figure 19The apparatus 400 also includes a processing component 422 that can be configured to execute program components stored in the memory 432. In this regard, the processing component 422 can be configured to implement methods provided by a component embodied within the apparatus 400, such as the method described above. It is to be understood that the processing component 422 can be configured to operate with one or more of the program components stored in the memory 432 to perform the methods described herein.

[0250] The apparatus 400 can also include a power supply component 426 that can include a rechargeable or non-rechargeable battery, and a power management system that can include a power supply, a power failure detection circuit, a power converter or inverter, a power status circuit, and any associated electrical components for providing and receiving electrical power, as well as a wired or wireless power interface 450 for charging the power supply component 426. The apparatus 400 can also include a wired or wireless network interface 450 that can include an antenna, a transceiver, a transmitter, a receiver, a modem, a processor, and any associated electrical components for sending and receiving data over a network, including a local area network, a wide area network, or a global network such as the Internet. The network interface 450 can also include a wireless interface, such as a Bluetooth, WiFi, or WiMax interface. The apparatus 400 can also include an input / output (I / O) interface 458 that can include a mouse, a keyboard, a display, a touch screen, a microphone, a speaker, a camera, a printer, and any associated electrical components for providing input to and receiving output from a user of the apparatus 400.

[0251] It is to be understood that the terminology “a plurality” and “a plurality of” refers to two or more, and other quantifiers can be interpreted in a like fashion. The terminology “and / or” describes association between or among multiple components or values, and indicates that when there can be three instances of “and” or “or”, it is possible for each instance to be present or absent. In addition, the terminology “ / ” is used to describe an “or” relationship between the associated objects. The singular forms “a,” “said,” and “the” are intended to include plural forms as well, unless the context clearly indicates otherwise.

[0252] It is to be understood that the terminology “a plurality” and “a plurality of” refers to two or more, and other quantifiers can be interpreted in a like fashion. The terminology “and / or” describes association between or among multiple components or values, and indicates that when there can be three instances of “and” or “or”, it is possible for each instance to be present or absent. In addition, the terminology “ / ” is used to describe an “or” relationship between the associated objects. The singular forms “a,” “said,” and “the” are intended to include plural forms as well, unless the context clearly indicates otherwise.

[0253] It is to be understood that the terminology “a plurality” and “a plurality of” refers to two or more, and other quantifiers can be interpreted in a like fashion. The terminology “and / or” describes association between or among multiple components or values, and indicates that when there can be three instances of “and” or “or”, it is possible for each instance to be present or absent. In addition, the terminology “ / ” is used to describe an “or” relationship between the associated objects. The singular forms “a,” “said,” and “the” are intended to include plural forms as well, unless the context clearly indicates otherwise.

[0254] Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the features disclosed herein. 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.

[0255] It should be understood that the present disclosure is not limited to the precise structures herein described and illustrated in the drawings, and that various modifications and changes can be made without departing from its scope. The scope of the present disclosure is limited only by the claims that follow.

Claims

1. A method for monitoring a search space, the method comprising: receiving a configuration of a search space; and monitoring the search space according to the configuration. The method is performed by a terminal, and the method comprises: determining a minimum time interval, the minimum time interval being a time interval from sending a physical random access channel (PRACH) resource to monitoring a random access search space; based on the minimum time interval, determining a random access search space for monitoring a PDCCH; based on the minimum time interval, determining a random access search space for monitoring a PDCCH, comprising: determining a switching time delay of the terminal, the switching time delay being a switching time delay for the terminal to switch between uplink and downlink; based on a size relationship between the switching time delay and the minimum time interval, determining a starting time of the random access search space for monitoring the PDCCH.

2. The method of claim 1, wherein, The switching time delay comprises a first switching time delay and a second switching time delay; The first switching time delay corresponds to a first performance condition of the terminal, and the second switching time delay corresponds to a second performance condition of the terminal; the first switching time delay is less than the second switching time delay.

3. The method of claim 2, wherein, The minimum time interval comprises a first minimum time interval and a second minimum time interval; The first minimum time interval corresponds to a first performance condition of the terminal, and the second minimum time interval corresponds to a second performance condition of the terminal; The first minimum time interval is less than the second minimum time interval.

4. The method of claim 2, wherein, The method further comprises: determining a first random access response search space corresponding to a first random access search space after the minimum time interval; based on a starting time of the first random access response search space as a reference time, determining a random access response window.

5. The method of claim 2, wherein, The first performance condition or the second performance condition comprises at least one of: a terminal type; and a center frequency of uplink and downlink resources of the terminal.

6. The method according to any one of claims 1 to 5, characterized in that, The method is performed by a network side device, and the method comprises: determining a minimum time interval, the minimum time interval being a time interval from a terminal sending a PRACH resource to the terminal monitoring a random access search space; based on the minimum time interval, determining a random access search space for sending a PDCCH; 7. The method according to any one of claims 2 to 5, characterized in that, based on the minimum time interval, determining a random access search space for sending a PDCCH, comprising: ​ ​ 8. A search space monitoring method, comprising: ​ ​ ​ ​ determining a switching delay of the terminal, the switching delay being a switching delay for the terminal to switch between uplink and downlink; determining a starting time of a random access search space for transmitting PDCCH based on a size relationship between the switching delay and the minimum time interval.

9. The method of claim 8, wherein, The switching delay includes a first switching delay and a second switching delay. The first switching delay corresponds to a first performance condition of the terminal, and the second switching delay corresponds to a second performance condition of the terminal.

10. The method of claim 9, wherein, The first switching delay is smaller than the second switching delay. The minimum time interval includes a first minimum time interval and a second minimum time interval. The first minimum time interval corresponds to a first performance condition of the terminal, and the second minimum time interval corresponds to a second performance condition of the terminal.

11. The method according to any one of claims 8 to 10, characterized in that, The first minimum time interval is smaller than the second minimum time interval. The method further includes: determining a first random access response search space corresponding to a first random access search space after the minimum time interval; 12. The method of any one of claims 9-10, wherein, determining a random access response window based on a starting time of the first random access response search space as a reference time. The first performance condition and the second performance condition include at least one of: a terminal type; and a center frequency of uplink and downlink resources of the terminal.

13. An apparatus for monitoring a search space, the apparatus comprising: The apparatus includes: a determining module configured to determine a minimum time interval, the minimum time interval being a time interval for transmitting PRACH resources and monitoring random access search space; a monitoring module configured to determine, based on the minimum time interval, a random access search space for monitoring PDCCH; The monitoring module is further configured to: determine a switching delay of the terminal, the switching delay being a switching delay for the terminal to switch between uplink and downlink; determine a starting time of the random access search space for monitoring PDCCH based on a size relationship between the switching delay and the minimum time interval.

14. An apparatus for monitoring a search space, the apparatus comprising: The apparatus includes: a determining module configured to determine a minimum time interval, the minimum time interval being a time interval for transmitting PRACH resources and monitoring random access search space; a transmitting module configured to determine, based on the minimum time interval, a random access search space for transmitting PDCCH; The transmitting module is further configured to: determine a switching delay of the terminal, the switching delay being a switching delay for the terminal to switch between uplink and downlink; determine a starting time of the random access search space for transmitting PDCCH based on a size relationship between the switching delay and the minimum time interval.

15. A communications device, characterized by The apparatus includes a processor and a memory, the memory having stored therein a computer program, and the processor executes the computer program stored in the memory to cause the apparatus to perform the method of any one of claims 1-7.

16. A communications device, characterized by The apparatus includes a processor and a memory, the memory having stored therein a computer program, and the processor executes the computer program stored in the memory to cause the apparatus to perform the method of any one of claims 8-12.

17. A computer readable storage medium storing instructions that, when executed, cause the method of any one of claims 1-7 to be implemented.

18. A computer-readable storage medium for storing instructions that, when executed, cause the method of any one of claims 8-12 to be implemented.

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