WO2017118177A1 - 确定随机接入无线网络临时标识的方法、用户设备和基站 - Google Patents

确定随机接入无线网络临时标识的方法、用户设备和基站 Download PDF

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WO2017118177A1
WO2017118177A1 PCT/CN2016/103767 CN2016103767W WO2017118177A1 WO 2017118177 A1 WO2017118177 A1 WO 2017118177A1 CN 2016103767 W CN2016103767 W CN 2016103767W WO 2017118177 A1 WO2017118177 A1 WO 2017118177A1
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Prior art keywords
prach
information
rnti
distribution
random access
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PCT/CN2016/103767
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English (en)
French (fr)
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邹伟
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中兴通讯股份有限公司
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access
    • H04W74/08Non-scheduled access, e.g. ALOHA
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access
    • H04W74/08Non-scheduled access, e.g. ALOHA
    • H04W74/0833Random access procedures, e.g. with 4-step access

Definitions

  • This application relates to, but is not limited to, wireless communication technologies.
  • RA-RNTI Random Access Radio Network Temporary Identity
  • PRACH physical random access channel
  • RAR Random Access Response
  • RA-RNTI 1+t_id+10*f_id
  • the t_id is the first subframe number (0 ⁇ t_id ⁇ 10) where the PRACH that sends the random access preamble is located, and the f_id is the index of the PRACH in the frequency domain in which the random access preamble is transmitted in the subframe (0 ⁇ f_id) ⁇ 6).
  • f_id is fixed to zero. It can be seen that the traditional RA-RNTI calculation method is calculated by using the subframe number and the frequency offset sequence number as parameters, and supports the identification of the PRACH in a range of 10 ms.
  • the inventor of the present application found in the process of implementing the technical solution of the present application that although the conventional RA-RNTI calculation method can completely distinguish all possible PRACHs in which the RAR response may fall within the same RAR window, the fixed use of the first 70
  • the RA-RNTI values are used to distinguish all possible PRACHs from the use of RA-RNTI values. Because only a small amount of PRACH deployment may be performed in the actual system.
  • M2M communication is a fifth generation mobile communication technology (5G, 5 th Generation) is currently an important topic of research, but also the future an important application field of wireless communications.
  • 3GPP proposes a research sub-project of the NB-IoT (NarowBand Internet of Things) system for the characteristics of low-cost low-throughput type terminals, with the goal of constructing a long-term evolution in the 200 kHz band.
  • NB-IoT NearBand Internet of Things
  • the downlink still uses Orthogonal Frequency Division Multiple Access (OFDMA) technology
  • the uplink still uses Single-Carrier Frequency Division Multiple Access (SC-FDMA) technology, and reuses or simplifies as much as possible.
  • OFDMA Orthogonal Frequency Division Multiple Access
  • SC-FDMA Single-Carrier Frequency Division Multiple Access
  • the functional modules specified in the existing LTE system The subcarrier width increases the subcarrier width of 3.75 KHz in the uplink in addition to the subcarrier width of 15 KHz in the LTE system to further enhance the large coverage support of the uplink.
  • the random access preamble in the NB-IoT system can be single carrier or multi-carrier, and the NB-IoT system also needs to consider different coverage levels to support multiple coverage. Scenes. Therefore, the type of random access channel of the NB-IoT system will be more complicated.
  • the single-carrier random access preamble may be longer in length and may reach or exceed the length of a 10 ms frame.
  • multiple random transmissions are required along with the Random Access Response (RAR). Therefore, the random access response window in the NB IoT system may be relatively long, and may even exceed the frame length of 10 ms.
  • the traditional RA-RNTI calculation method may require a large number of RA-RNTIs. value. Taking the repetition number 4 and the type number 2 as an example, the conventional method requires 560 different RA-RNTI values. This design is particularly unsuitable in NB-IoT systems with a large number of UEs.
  • a method for determining a temporary access radio network temporary identifier RA-RNTI includes:
  • the user equipment UE obtains the information of the PRACH distribution of the physical random access channel through the broadcast message, and selects the PRACH that sends the random access preamble;
  • a user equipment including a random access processing device, where the random access processing device includes:
  • the information receiving module is configured to: obtain, by using a broadcast message, information about a PRACH distribution of the physical random access channel;
  • the PRACH selection module is configured to: select, according to the information of the PRACH distribution, a PRACH that sends a random access preamble;
  • the random access radio network temporary identifier RA-RNTI determining module is configured to: determine, according to a mapping relationship between the PRACH and the RA-RNTI value in the PRACH distribution, the RA-RNTI value corresponding to the PRACH that sends the random access preamble.
  • a method for transmitting information including:
  • the base station sends a broadcast message, where the information of the PRACH distribution and information required by the UE to determine the RA-RNTI are carried in the broadcast message.
  • a base station includes an information transmitting apparatus, wherein the information transmitting apparatus includes:
  • the information determining module is configured to: determine information about a PRACH distribution of the physical random access channel, and determine, by the user equipment, the information required for the random access radio network temporary identifier RA-RNTI;
  • the message sending module is configured to: send a broadcast message, where the broadcast message carries the information of the PRACH distribution and the information that the UE needs to determine the RA-RNTI.
  • the foregoing solution can reduce the number of RA-RNTI values required by the system and save RA-RNTI value resources.
  • FIG. 1 is a flowchart of a method for determining an RA-RNTI according to an embodiment of the present invention
  • FIG. 2 is a block diagram of a random access processing apparatus in a user equipment according to an embodiment of the present invention
  • FIG. 3 is a flowchart of a method for sending information according to Embodiment 2 of the present invention.
  • FIG. 4 is a block diagram of an information transmitting apparatus in a base station according to Embodiment 2 of the present invention.
  • FIG. 6A and FIG. 6B are schematic diagrams of an application example 2 PARCH ordering and PARCH and RA-RNTI value mapping according to the present invention
  • FIG. 7 is a schematic diagram of a signaling format of priority of PRACH information based on the application example 2 of the present invention.
  • This embodiment designs a new method for determining the RA-RNTI value to save the RA-RNTI value resource as much as possible.
  • This embodiment is used for the NB IoT system, but is not limited thereto, and can also be used in other communication systems to save RA-RNTI value resources.
  • the method for determining the RA-RNTI value in this embodiment includes:
  • Step 110 The user equipment UE obtains the information of the PRACH distribution of the physical random access channel through the broadcast message, and selects the PRACH that sends the random access preamble;
  • the UE in the present application may be a terminal device of various communication systems including the Internet of Things.
  • the information of the PRACH distribution includes one or more of the following: a starting point of a time period of the PRACH distribution; a length of a time period of the PRACH distribution; and information of the PRACH deployed in the time period;
  • the information of the PRACH deployed in the time period includes one or more of the following information: type of PRACH; start subframe of PRACH; end subframe of PRACH; length of PRACH; initial carrier frequency of PRACH; end of PRACH Carrier frequency; the number of subcarriers used by PRACH; and the coverage level of PRACH.
  • the type of the PRACH may be divided according to the length of the PRACH and/or the number of subcarriers used by the PRACH, and the like, for example, a single subcarrier type and a multisubcarrier type. But it is not limited to this and can be other classification methods.
  • Step 120 The UE determines, according to the mapping relationship between the PRACH and the RA-RNTI value in the PRACH distribution, the RA-RNTI value corresponding to the PRACH that sends the random access preamble.
  • the mapping relationship between the PRACH and the RA-RNTI values in the PRACH distribution is a one-to-one correspondence between the PRACH and the RA-RNTI values.
  • the UE determines, according to the mapping relationship between the PRACH and the RA-RNTI value in the PRACH distribution, the RA-RNTI value corresponding to the PRACH that sends the random access preamble, including: according to the information of the PRACH distribution. Determining a sequence of the PRACHs of the random access preambles in the PRACH distribution; determining an RA-RNTI value having the same sequence number in the range of the RA-RNTI, and determining the preamble of the random access control The RA-RNTI value corresponding to the PRACH.
  • the sorting manner of the above setting may be determined according to one or more of the following information: the information of the PRACH based on the sorting; the priority of the information of the PRACH based on the sorting; and the sorting rule under the same PRACH information, such as from small to large or from Big to small.
  • the information for determining the sorting manner is obtained by: obtaining by a broadcast message; or by a standard protocol; or, part of the information is obtained through a broadcast message, and part of the information is agreed by a standard protocol.
  • the foregoing RA-RNTI value range may be obtained by using a broadcast message or by a standard protocol.
  • a PRACH in a PRACH distribution may use its starting subframe and starting carrier frequency as a sorted reference point (but may also use its ending subframe and ending carrier frequency as a sorted reference point).
  • the sorting method starts with the first subframe of a certain system frame, and sorts according to the starting subframe number from small to large. If there are multiple PRACHs with the same starting subframe number, then the starting carrier is used. The order of frequency is from small to large. For another example, when there are multiple PRACH types, different types of PRACHs with the same reference point may be mapped in a certain type order. At this time, the reference of the PRACH The priority of the point when sorting is higher than the type of PRACH.
  • the PRACH of a certain type may be sorted according to the reference point, and then the next type of PRACH is sorted according to the reference point. At this time, the priority of the PRACH type is sorted. Higher than the reference point of PRACH.
  • the RA-RNTI value determined by the UE in this step is used in subsequent RAR reception.
  • the communication system may be compatible with a plurality of RA-RNTI value determination modes, such as a conventional calculation-based RA-RNTI determination mode and a mapping-based RA-RNTI determination mode of the present embodiment.
  • the method further includes: the UE from the broadcast message Obtaining the indication information of the RA-RNTI determining manner, determining, according to the indication information, that the mapping-based RA-RNTI determining manner is adopted, and determining, according to the mapping relationship between the PRACH and the RA-RNTI value in the PRACH distribution, the sending random The RA-RNTI value corresponding to the PRACH of the preamble is accessed.
  • the indication information may include: information indicating whether to adopt a mapping-based RA-RNTI determining manner; or, information indicating whether to adopt
  • the embodiment further provides a user equipment, including a random access processing device.
  • the random access processing device includes:
  • the information receiving module 10 is configured to: obtain, by using a broadcast message, information about a PRACH distribution of a physical random access channel;
  • the PRACH selection module 20 is configured to: select, according to the information of the PRACH distribution, a PRACH that sends a random access preamble;
  • the random access radio network temporary identifier RA-RNTI determining module 30 is configured to: determine, according to a mapping relationship between the PRACH and the RA-RNTI value in the PRACH distribution, the RA-RNTI value corresponding to the PRACH that sends the random access preamble.
  • the information of the PRACH distribution acquired by the information receiving module includes one or more of the following information:
  • the information about the PRACH deployed in the time period includes one or more of the following information:
  • the starting subframe of the PRACH is the starting subframe of the PRACH.
  • the starting carrier frequency of the PRACH is the starting carrier frequency of the PRACH
  • the number of subcarriers used by the PRACH is the number of subcarriers used by the PRACH.
  • the mapping relationship between the PRACH and the RA-RNTI value in the PRACH distribution is a one-to-one correspondence between the PRACH and the RA-RNTI values.
  • the RA-RNTI determining module includes:
  • the sequence number determining unit is configured to: determine, according to the information of the PRACH distribution and the set sorting manner, the sequence number of the PRACH that sends the random access preamble in the PRACH distribution;
  • the RA-RNTI determining unit is configured to: determine an RA-RNTI value having the same sequence number in the RA-RNTI value range, and determine the RA-RNTI value corresponding to the PRACH that sends the random access preamble.
  • the sequence number determining unit determines, according to the information of the PRACH distribution and the set sorting manner, the sequence number of the PRACH that sends the random access preamble in the PRACH distribution; wherein the sorting manner is based on one or more of the following Information to determine:
  • the information for determining the sorting manner is obtained by: obtaining by a broadcast message; or by a standard protocol; or, part of the information is obtained by using a broadcast message, and part of the information is agreed by a standard protocol; the RA- The value range of the RNTI is obtained through broadcast messages or by standard protocols.
  • the information receiving module is further configured to: obtain, by using a broadcast message, indication information of an RA-RNTI determining manner;
  • the RA-RNTI determining module is further configured to determine, according to the indication information, whether to adopt a mapping-based RA-RNTI determining manner, and if yes, determine the sending according to a mapping relationship between a PRACH and an RA-RNTI value in the PRACH distribution.
  • the RA-RNTI value corresponding to the PRACH of the preamble is randomly accessed.
  • the user equipment is a user equipment for a narrowband Internet of Things NB-IoT system.
  • the present embodiment performs one-to-one mapping of PRACH and RA-RNTI according to the actual configured PRACH distribution within a certain range.
  • the RA-RNTI value is no longer directly calculated by the formula through different calculation factors, but according to the actual distribution of the PRACH obtained by the UE in the broadcast message on one or several system frames,
  • the certain order is obtained in one-to-one correspondence with the RA-RNTI values within a certain range of values defined in advance.
  • the base station may indicate in the broadcast message of the system that the RA-RNTI determination mode is a traditional calculation mode or a mapping-based manner.
  • the user equipment can obtain the information needed to determine the ordering by means of a broadcast message and/or a convention in a standard protocol.
  • the solution in this embodiment can reduce the number of RA-RNTI values required by the system, save the RA-RNTI value resource, and particularly adapt to the multi-UE, multi-class, multi-coverage random access support of the NB IoT system.
  • This embodiment provides a method for sending information, as shown in FIG. 3, including:
  • Step 210 The base station determines information about a PRACH distribution of the physical random access channel, and the user equipment UE determines information required for the random access radio network temporary identifier RA-RNTI based on the mapping between the PRACH and the RA-RNTI value.
  • the information of the PRACH distribution includes one or more of the following: a starting point of a time period of the PRACH distribution; a length of a time period of the PRACH distribution; and information of the PRACH deployed in the time period;
  • the information of the PRACH deployed in the time period includes one or more of the following information: type of PRACH; start subframe of PRACH; end subframe of PRACH; length of PRACH; initial carrier frequency of PRACH; end of PRACH Carrier frequency; the number of subcarriers used by PRACH; and the coverage level of PRACH.
  • the information that the UE determines that the RA-RNTI needs to be based on the mapping between the PRACH and the RA-RNTI value includes one or more of the following information: the information of the PRACH based on the ranking; the priority of the information of the PRACH based on the ranking; The sorting rule under the same PRACH information; the indication information of the RA-RNTI determining mode, and the information of the RA-RNTI value range.
  • the base station may allocate a set of RNTI values as an alternative RA-RNTI for one-to-one mapping and broadcast to all UEs.
  • the RA-RNTI value range is a set of the set of RNTI values, and the RA-RNTI value range may be used.
  • the RA-RNTI minimum value and the RA-RNTI maximum value are represented by intervals, and may also be represented by the number of RA-RNTI minimum values and RA-RNTI values.
  • the indication information may include: information indicating whether to adopt a mapping-based RA-RNTI determining manner; or, information indicating whether to adopt a mapping-based RA-RNTI determining manner for different types of PRACHs respectively.
  • Step 220 The base station sends a broadcast message, where the broadcast message carries the information of the PRACH distribution and the UE determines the information required by the RA-RNTI based on the mapping between the PRACH and the RA-RNTI value.
  • the method of this embodiment is used for a narrowband Internet of Things NB-IoT system, but is not limited thereto, and can also be applied to other communication systems.
  • the base station of this embodiment includes an information transmitting apparatus, where the information transmitting apparatus includes:
  • the information determining module 50 is configured to: determine information about a PRACH distribution of the physical random access channel, and determine, by the user equipment UE, information required for the random access radio network temporary identifier RA-RNTI based on the mapping between the PRACH and the RA-RNTI value;
  • the message sending module 60 is configured to: send a broadcast message, where the broadcast message carries the information of the PRACH distribution and the UE determines the information required by the RA-RNTI based on the mapping between the PRACH and the RA-RNTI value.
  • the information of the PRACH distribution determined by the information determining module includes one or more of the following: a starting point of a time period of the PRACH distribution; a length of a time period of the PRACH distribution; and information of the PRACH deployed in the time period;
  • the information of the PRACH deployed in the time period includes one or more of the following information: type of PRACH; start subframe of PRACH; end subframe of PRACH; length of PRACH; initial carrier frequency of PRACH; end of PRACH Carrier frequency; the number of subcarriers used by PRACH; and the coverage level of PRACH.
  • the information that the information determining module determines, according to the mapping of the PRACH and the RA-RNTI value, the information required by the UE to determine the RA-RNTI includes one or more of the following information: the information of the PRACH based on the ranking; the priority of the information of the PRACH based on the ranking; The sorting rule under the same PRACH information; the indication information of the RA-RNTI determining manner; and the information of the RA-RNTI value range.
  • the base station in this embodiment is a base station of a narrowband Internet of Things NB-IoT system, but is not limited thereto, and may be a base station of another communication system.
  • the information sending method in this embodiment may send the UE the information required to determine the RA-RNTI based on the mapping between the PRACH and the RA-RNTI value, so that the UE can determine the RA-RNTI based on the mapping between the PRACH and the RA-RNTI value, and save the RA. -RNTI resource.
  • FIG. 5 is a signaling flow of determining an RA-RNTI value based on a mapping manner in this example. As shown, it includes:
  • Step 1 In addition to broadcasting the PRACH distribution information, the base station sends the indication information of the RA-RNTI determination mode through the broadcast message, and determines the information of the sorting manner.
  • the indication information may be represented by 1 bit.
  • the value of the bit is '1', it indicates that the RA-RNTI value is determined by using a mapping manner; when the value of the bit is '0', it indicates that the RA-RNTI value is pressed.
  • the traditional calculation method determines that this example assumes that the value of this bit is '1'.
  • the indication information of the RA-RNTI determination mode may be separately set; or, for all PRACHs, the same RA-RNTI determination mode indication information may be shared.
  • the information for determining the ordering manner may include one or more of the following: information of the PRACH based on the ranking; priority of the information of the PRACH based on the ranking; and a ranking rule under the same PRACH information.
  • the information of the PRACH based on the ordering may be a PRACH type, a subframe in which the PRACH is located, a frequency used by the PRACH, a PRACH coverage level, and the like. The priority of this information can be notified in the broadcast message or as agreed in the standard protocol.
  • the base station may also formulate a set of RNTI values as alternative RA-RNTIs for one-to-one mapping and broadcast to all UEs.
  • Step 2 The UE obtains the information of the PRACH distribution according to the broadcast message, and selects one PRACH to send the random access preamble;
  • Step 3 The UE obtains the indication information of the RA-RNTI determination manner from the broadcast message, and determines the RA-RNTI value determination manner to be adopted according to the value of the indication information. In this example, the UE determines to adopt the mapping-based RA-RNTI value. Determine the way;
  • the UE determines the RA-RNTI value by using a conventional calculation manner, and is set to: subsequent RAR reception.
  • Step 4 The UE determines the RA-RNTI value corresponding to the PRACH that sends the random access preamble according to the mapping relationship between the PRACH and the RA-RNTI value in the PRACH distribution, and sets the following: the subsequent RAR reception. .
  • FIG. 6A is a schematic diagram of PRACH sorting according to different types according to chronological order;
  • FIG. 6B is a simple A schematic diagram of obtaining the corresponding RA-RNTI value according to the sequence number of the PRACH in a one-to-one mapping manner.
  • three types of PARCH are included: 10 short PRACHs (length less than one subframe), and 1 long PRACH (length greater than one) Subframe) and a PRACH with a wide frequency domain (using multiple sub-frequency waves).
  • the type of PARCH has the highest priority, and the order of the three types is: short PARCH using 1 subcarrier, long PARCH using 1 subcarrier, and PARCH using multiple carriers.
  • the PARCH of the same type is sorted according to the order of the starting subframes from small to large. Therefore, the sequence numbers of the 12 PARCHs in the figure are as shown in the figure, including PRACH1 ⁇ PRACH10, PRACH11 and PRACH12.
  • the PRACHs of different sequence numbers are sequentially mapped one-to-one with the RA-RNTI values in the RA-RNTI value range, and each PRACH corresponds to one RA-RNTI value of the same sequence number, and the RA-RNTI value is used.
  • the sequence number of the RA-RNTI value in the range may be determined according to the manner in which the RA-RNTI value is small to large, or may be determined according to the order of the RA-RNTI value from large to small, or directly determined according to the defined sequence number. . Since both the UE and the base station are mapped in the same manner, the UE and the base station can find the correct RA-RNTI value according to the information of the PRACH distribution, the RA-RNTI value range, and the information of determining the ordering manner.
  • FIG. 7 is a signaling format providing a priority indicating information of a PRACH based on the ordering. As shown in the figure, one byte can indicate four sorting priority parameters, wherein each priority occupies 2 bits, and four parameters are indicated from front to back: PRACH type, starting subframe of PARCH, starting frequency of PARCH And the coverage level of PARCH (can be expressed in repetitions).
  • PRACH type can indicate four sorting priority parameters, wherein each priority occupies 2 bits, and four parameters are indicated from front to back: PRACH type, starting subframe of PARCH, starting frequency of PARCH And the coverage level of PARCH (can be expressed in repetitions).
  • the 2-bit value can take 00, 01, 10, and 11, indicating the priority from high to low.
  • the signaling value of the priority of this example is: 0001XXXX (X is 0 or 1), which means that the PARCH type is sorted first, and the same type is sorted by the starting subframe of the PARCH because it does not exist.
  • the PARCH type and the starting subframe are the same multiple PARCH, so the UE does not care about the value of the last 4 bits.
  • the order of priority shown can also be fixed and pre-agreed through standard protocols.
  • the sorting method is flexible for the same priority information.
  • the time can be from early to late (specifically, the starting subframe can be from small to large), or from late to early (specifically, the starting subframe can be from large to small);
  • the frequency can be from high frequency. To the low frequency, it can also be from low frequency to high frequency. These can be notified by broadcast message, or Prior agreement is made through standard protocols.
  • all or part of the steps of the above embodiments may also be implemented by using an integrated circuit. These steps may be separately fabricated into individual integrated circuit modules, or multiple modules or steps may be fabricated into a single integrated circuit module. achieve.
  • the devices/function modules/functional units in the above embodiments may be implemented by a general-purpose computing device, which may be centralized on a single computing device or distributed over a network of multiple computing devices.
  • the device/function module/functional unit in the above embodiment When the device/function module/functional unit in the above embodiment is implemented in the form of a software function module and sold or used as a stand-alone product, it can be stored in a computer readable storage medium.
  • the above mentioned computer readable storage medium may be a read only memory, a magnetic disk or an optical disk or the like.
  • the number of RA-RNTI values required by the system can be reduced, and the RA-RNTI value resource can be saved.

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Abstract

一种确定随机接入无线网络临时标识RA-RNTI的方法、用户设备和基站,UE通过广播消息获取基站发送的物理随机接入信道PRACH分布的信息,选择发送随机接入前导的PRACH;所述UE根据所述PRACH分布中PRACH与RA-RNTI值的映射关系,确定所述发送随机接入前导的PRACH对应的RA-RNTI值。本申请方案可以减少系统所需要的RA-RNTI值的个数,节约RA-RNTI值资源。

Description

确定随机接入无线网络临时标识的方法、用户设备和基站 技术领域
本申请涉及但不限于无线通信技术。
背景技术
在传统的通信系统如长期演进(LTE,Long-Term Evolution)系统中,不同的随机接入信道是使用不同的随机接入无线网络临时标识(RA-RNTI,Random Access Radio Network Temporary Identity)进行区别的。用户设备(UE,User Equipment)使用和发送随机接入前导的物理随机接入信道(PRACH,Physical Random Access Channel)对应的RA-RNTI,在后续的随机接入响应窗内进行随机接入响应(RAR,Random Access Response)的接收。这个过程中,UE使用的RA-RNTI是通过如下公式计算获得的:
RA-RNTI=1+t_id+10*f_id
其中,t_id是发送随机接入前导的PRACH所在的第一个子帧号(0≤t_id<10),f_id是在该子帧发送随机接入前导的PRACH在频域上的索引(0≤f_id<6)。对于FDD而言,每个子帧只有一个PRACH资源,因此f_id固定为0。可见,传统的RA-RNTI计算方法是以子帧号和频率偏移序号为参数进行计算的,最多支持一个10ms帧范围内的PRACH的识别。
本申请发明人在实现本申请所实施技术方案的过程中发现,虽然传统的RA-RNTI计算方法可以完全区分开RAR响应可能落在同一个RAR窗口内的所有可能的PRACH,但固定使用前70个RA-RNTI值来区分所有可能的PRACH对RA-RNTI值的使用有点浪费。因为在实际系统中可能只进行了少量PRACH的部署。
此外,这种RA-RNTI值的计算方法也不适用于影响PRACH分布的因素较多的系统。以机器间(Machine to Machine,以下简称M2M)通信为例。M2M通信是第五代移动通信技术(5G,5th Generation)目前研究的一个重要课题,也是未来无线通信的一个重要应用领域。在M2M课题里,针对低成 本低吞吐量类型终端的特性,3GPP提出了窄带物联网(NB-IoT,NarowBand Internet of Things)系统的研究子课题,目标是在200KHz的频带内构建一个和长期演进(LTE,Long-Term Evolution)相似的系统,为低成本终端提供低吞吐量的无线通讯服务。下行仍然采用正交频分多址(OFDMA,Orthogonal Frequency Division Multiple Access)技术,上行采用仍然采用单载波频分多址(SC-FDMA,Single-Carrier Frequency Division Multiple Access)技术,并尽量重用或简化已有的LTE系统中规定的功能模块。子载波宽度除了沿用LTE系统15KHz的子载波宽度外,上行增加3.75KHz的子载波宽度以进一步增强上行的大覆盖支持。
当前,相关的技术标准正在3GPP国际标准化组织内进行研究。3GPP RAN2的第92次会议中提出:NB-IoT系统中的随机接入前导可以是单载波的,也可以是多载波的,并且NB-IoT系统还需要考虑不同的覆盖等级以支持多种覆盖场景。因而NB-IoT系统的随机接入信道的类型将会更加复杂。特别是单载波的随机接入前导,其长度可能会比较长,可能会达到甚至超过一个10ms帧的长度。而且,为了支持增强的覆盖场景,随着随机接入响应(RAR,Random Access Response)需要进行多次重复发送。所以,在NB IoT系统中的随机接入响应窗可能会比较长,甚至会超过10ms的帧长。
在NB-IoT系统中,随着考虑因素的增多,例如多种覆盖的不同重复次数、PRACH类型(单子载波和多子载波)等,采用传统的RA-RNTI计算方法可能需要大量的RA-RNTI值。以重复次数4,类型种类数2为例,传统方法需要560个不同的RA-RNTI值。这种设计在UE数很大的NB-IoT系统中显得尤其不适用。
发明内容
以下是对本文详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。
有鉴于此,本发明实施例提供了以下技术方案。
一种确定随机接入无线网络临时标识RA-RNTI的方法,包括:
用户设备UE通过广播消息获取物理随机接入信道PRACH分布的信息,选择发送随机接入前导的PRACH;
所述UE根据所述PRACH分布中PRACH与RA-RNTI值的映射关系,确定所述发送随机接入前导的PRACH对应的RA-RNTI值。
一种用户设备,包括随机接入处理装置,其中,所述随机接入处理装置包括:
信息接收模块,设置为:通过广播消息获取物理随机接入信道PRACH分布的信息;
PRACH选择模块,设置为:根据所述PRACH分布的信息,选择发送随机接入前导的PRACH;
随机接入无线网络临时标识RA-RNTI确定模块,设置为:根据所述PRACH分布中PRACH与RA-RNTI值的映射关系,确定所述发送随机接入前导的PRACH对应的RA-RNTI值。
一种信息发送方法,包括:
基站确定物理随机接入信道PRACH分布的信息,及用户设备UE确定随机接入无线网络临时标识RA-RNTI需要的信息;
所述基站发送广播消息,在所述广播消息中携带所述PRACH分布的信息及UE确定RA-RNTI需要的信息。
一种基站,包括信息发送装置,其中,所述信息发送装置包括:
信息确定模块,设置为:确定物理随机接入信道PRACH分布的信息,及用户设备UE确定随机接入无线网络临时标识RA-RNTI需要的信息;
消息发送模块,设置为:发送广播消息,在所述广播消息中携带所述PRACH分布的信息及UE确定RA-RNTI需要的信息。
上述方案可以减少系统所需要的RA-RNTI值的个数,节约RA-RNTI值资源。
本发明实施例的其它特征和优点将在随后的说明书中阐述,并且,部分地从说明书中变得显而易见,或者通过实施本发明实施例而了解。本发明实 施例的目的和其他优点可通过在说明书、权利要求书以及附图中所特别指出的结构来实现和获得。
在阅读并理解了附图和详细描述后,可以明白其他方面。
附图概述
图1为本发明实施例一确定RA-RNTI的方法的流程图;
图2为本发明实施例一用户设备中随机接入处理装置的模块图;
图3为本发明实施例二信息发送方法的流程图;
图4为本发明实施例二基站中信息发送装置的模块图;
图5是本发明应用示例一的信令流程图;
图6A和图6B分别是本发明应用示例二PARCH排序,及PARCH和RA-RNTI值映射的示意图;
图7是本发明应用示例二指示排序基于的PRACH信息的优先级的信令格式的示意图。
本发明的较佳实施方式
下面结合附图对本发明的实施方式进行描述。需要说明的是,在不冲突的情况下,本申请中的实施例及实施例中的各种方式可以相互组合。
实施例一
本实施例设计了一种新的确定RA-RNTI值的方法,以尽量节约RA-RNTI值资源。本实施例用于NB IoT系统,但不局限于此,也可以用于其他通信系统以节约RA-RNTI值资源。
如图1所示,本实施例确定RA-RNTI值的方法包括:
步骤110,用户设备UE通过广播消息获取物理随机接入信道PRACH分布的信息,选择发送随机接入前导的PRACH;
本申请中的UE可以是包括物联网在内的各种通信系统的终端设备。
本实施例中,所述PRACH分布的信息包括以下一种或多种信息:PRACH分布的时间周期的起点;PRACH分布的时间周期的长度;及所述时间周期内部署的PRACH的信息;其中,所述时间周期内部署的PRACH的信息包括以下一种或多种信息:PRACH的类型;PRACH的起始子帧;PRACH的结束子帧;PRACH的长度;PRACH的起始载波频率;PRACH的结束载波频率;PRACH使用的子载波个数;及PRACH的覆盖等级。PRACH的类型可以根据PRACH的长度和/或PRACH使用的子载波的个数等来划分,例如,分为单子载波类型和多子载波类型。但不局限于此,可以是其他的分类方式。
步骤120,所述UE根据所述PRACH分布中PRACH与RA-RNTI值的映射关系,确定所述发送随机接入前导的PRACH对应的RA-RNTI值。
本实施例中,PRACH分布中PRACH与RA-RNTI值的映射关系为PRACH与RA-RNTI值间的一一对应关系。本步骤中,所述UE根据所述PRACH分布中PRACH与RA-RNTI值的映射关系,确定所述发送随机接入前导的PRACH对应的RA-RNTI值,包括:根据所述PRACH分布的信息和设定的排序方式,确定所述PRACH分布中所述发送随机接入前导的PRACH的序号;将RA-RNTI取值范围内具有相同序号的RA-RNTI值,确定为所述发送随机接入前导的PRACH对应的RA-RNTI值。
上述设定的排序方式可以根据以下一种或多种信息来确定:排序基于的PRACH的信息;排序基于的PRACH的信息的优先级;及同一PRACH信息下的排序规则,如从小到大或从大到小。这些确定排序方式的信息通过以下方式得到:通过广播消息获取;或者,通过标准协议的方式约定;或者,部分信息通过广播消息获取,部分信息通过标准协议的方式约定。另外,上述RA-RNTI取值范围可以通过广播消息获取,或者通过标准协议的方式约定。
例如,PRACH分布中的PRACH可以以其起始子帧和起始载波频率作为排序的参考点(但也可以以其结束子帧和结束载波频率作为排序的参考点)。而排序方式则以某一系统帧的第一个子帧为起始点,按起始子帧号从小到大的方式排序,如果存在起始子帧号相同的多个PRACH,再按起始载波频率从小到大的顺序排序。又如,当存在多种PRACH类型时,具有相同参考点的不同类型的PRACH可以按一定的类型顺序进行映射,此时,PRACH的参考 点在排序时的优先级高于PRACH的类型。或者,当存在多种PRACH类型时,可以先对某个类型的PRACH按照参考点进行排序后,再对下一类型的PRACH按照参考点进行排序,此时,PRACH的类型在排序时的优先级高于PRACH的参考点。
本步骤UE确定的RA-RNTI值在后续RAR接收时使用。
在另一实施例中,通信系统可以兼容多种RA-RNTI值确定方式,例如,传统的基于计算的RA-RNTI确定方式和本实施例的基于映射的RA-RNTI确定方式。此时,所述UE根据所述PRACH分布中PRACH与RA-RNTI值的映射关系,确定所述发送随机接入前导的PRACH对应的RA-RNTI值之前,还包括:所述UE从广播消息中获取RA-RNTI确定方式的指示信息,根据所述指示信息确定应采用基于映射的RA-RNTI确定方式时,再根据所述PRACH分布中PRACH与RA-RNTI值的映射关系,确定所述发送随机接入前导的PRACH对应的RA-RNTI值。其中,所述指示信息可以包括:指示是否采用基于映射的RA-RNTI确定方式的信息;或者,包括针对不同类型的PRACH分别指示的是否采用基于映射的RA-RNTI确定方式的信息。
本实施例还提供了一种用户设备,包括随机接入处理装置,如图2所示,所述随机接入处理装置包括:
信息接收模块10,设置为:通过广播消息获取物理随机接入信道PRACH分布的信息;
PRACH选择模块20,设置为:根据所述PRACH分布的信息,选择发送随机接入前导的PRACH;
随机接入无线网络临时标识RA-RNTI确定模块30,设置为:根据所述PRACH分布中PRACH与RA-RNTI值的映射关系,确定所述发送随机接入前导的PRACH对应的RA-RNTI值。
可选地,
所述信息接收模块获取的PRACH分布的信息包括以下一种或多种信息:
PRACH分布的时间周期的起点;
PRACH分布的时间周期的长度;及
所述时间周期内部署的PRACH的信息;
其中,所述时间周期内部署的PRACH的信息包括以下一种或多种信息:
PRACH的类型;
PRACH的起始子帧;
PRACH的结束子帧;
PRACH的长度;
PRACH的起始载波频率;
PRACH的结束载波频率;
PRACH使用的子载波个数;
PRACH的覆盖等级。
可选地,
所述PRACH分布中PRACH与RA-RNTI值的映射关系为PRACH与RA-RNTI值间的一一对应关系。
可选地,
所述RA-RNTI确定模块包括:
序号确定单元,设置为:根据所述PRACH分布的信息和设定的排序方式,确定所述PRACH分布中所述发送随机接入前导的PRACH的序号;
RA-RNTI确定单元,设置为:将RA-RNTI取值范围内具有相同序号的RA-RNTI值,确定为所述发送随机接入前导的PRACH对应的RA-RNTI值。
可选地,
所述序号确定单元根据所述PRACH分布的信息和设定的排序方式,确定所述PRACH分布中所述发送随机接入前导的PRACH的序号;其中,所述排序方式根据以下一种或多种信息来确定:
排序基于的PRACH的信息;
排序基于的PRACH的信息的优先级;
同一PRACH信息下的排序规则;
其中,所述确定排序方式的信息通过以下方式得到:通过广播消息获取;或者,通过标准协议的方式约定;或者,部分信息通过广播消息获取,部分信息通过标准协议的方式约定;所述RA-RNTI取值范围通过广播消息获取,或者通过标准协议的方式约定。
可选地,
所述信息接收模块还用于从广播消息中获取RA-RNTI确定方式的指示信息;
所述RA-RNTI确定模块还用于根据所述指示信息确定是否采用基于映射的RA-RNTI确定方式,如是,再根据所述PRACH分布中PRACH与RA-RNTI值的映射关系,确定所述发送随机接入前导的PRACH对应的RA-RNTI值。
可选地,
所述用户设备为用于窄带物联网NB-IoT系统的用户设备。
如上所述,本实施例根据实际配置的PRACH分布在一定范围内进行PRACH和RA-RNTI的一对一映射。在这种RA-RNTI确定机制中,RA-RNTI值不再由公式通过不同计算因子直接计算获得,而是按照UE在广播消息中获得的PRACH在一个或几个系统帧上的实际分布,按一定的顺序和事先定义的一定取值范围内的RA-RNTI值进行一一对应获得。为了与传统通信系统如LTE系统兼容,基站可以在系统的广播消息中指示RA-RNTI确定方式为传统的计算方式或基于映射的方式。而用户设备可以通过广播消息和/或标准协议中的约定获取确定排序方式所需要的信息。
本实施例方案可以减少系统所需要的RA-RNTI值的个数,节约RA-RNTI值资源,特别适应NB IoT系统的多UE,多类别,多覆盖的随机接入支持。
实施例二
本实施例提供一种信息发送方法,如图3所示,包括:
步骤210,基站确定物理随机接入信道PRACH分布的信息,及用户设备UE基于PRACH与RA-RNTI值的映射确定随机接入无线网络临时标识RA-RNTI需要的信息;
本实施例中,所述PRACH分布的信息包括以下一种或多种信息:PRACH分布的时间周期的起点;PRACH分布的时间周期的长度;及所述时间周期内部署的PRACH的信息;其中,所述时间周期内部署的PRACH的信息包括以下一种或多种信息:PRACH的类型;PRACH的起始子帧;PRACH的结束子帧;PRACH的长度;PRACH的起始载波频率;PRACH的结束载波频率;PRACH使用的子载波个数;及PRACH的覆盖等级。
本实施例中,所述UE基于PRACH与RA-RNTI值的映射确定RA-RNTI需要的信息包括以下一种或多种信息:排序基于的PRACH的信息;排序基于的PRACH的信息的优先级;同一PRACH信息下的排序规则;RA-RNTI确定方式的指示信息,及RA-RNTI取值范围的信息。基站可以划出一组RNTI值作为备选的用于一对一映射的RA-RNTI并广播给所有UE,RA-RNTI取值范围即该组RNTI值的集合,RA-RNTI取值范围可以用RA-RNTI最小值和RA-RNTI最大值限定的区间来表示,也可以RA-RNTI最小值和RA-RNTI值的个数来表示。其中,所述指示信息可以包括:指示是否采用基于映射的RA-RNTI确定方式的信息;或者,包括针对不同类型的PRACH分别指示的是否采用基于映射的RA-RNTI确定方式的信息。
步骤220,所述基站发送广播消息,在所述广播消息中携带所述PRACH分布的信息及所述UE基于PRACH与RA-RNTI值的映射确定RA-RNTI需要的信息。
本实施例的方法用于窄带物联网NB-IoT系统,但不局限于此,也可以用于其他通信系统。
本实施例的基站包括信息发送装置,其中,所述信息发送装置包括:
信息确定模块50,设置为:确定物理随机接入信道PRACH分布的信息,及用户设备UE基于PRACH与RA-RNTI值的映射确定随机接入无线网络临时标识RA-RNTI需要的信息;
消息发送模块60,设置为:发送广播消息,在所述广播消息中携带所述PRACH分布的信息及所述UE基于PRACH与RA-RNTI值的映射确定RA-RNTI需要的信息。
可选地,
所述信息确定模块确定的PRACH分布的信息包括以下一种或多种信息:PRACH分布的时间周期的起点;PRACH分布的时间周期的长度;及所述时间周期内部署的PRACH的信息;其中,所述时间周期内部署的PRACH的信息包括以下一种或多种信息:PRACH的类型;PRACH的起始子帧;PRACH的结束子帧;PRACH的长度;PRACH的起始载波频率;PRACH的结束载波频率;PRACH使用的子载波个数;及PRACH的覆盖等级。
可选地,
所述信息确定模块基于PRACH与RA-RNTI值的映射确定的UE确定RA-RNTI需要的信息包括以下一种或多种信息:排序基于的PRACH的信息;排序基于的PRACH的信息的优先级;同一PRACH信息下的排序规则;RA-RNTI确定方式的指示信息;及RA-RNTI取值范围的信息。
本实施例的基站为窄带物联网NB-IoT系统的基站,但不局限于此,也可以是其他通信系统的基站。
本实施例的信息发送方法可以向UE发送其基于PRACH与RA-RNTI值的映射确定RA-RNTI所需要的信息,使UE可以基于PRACH与RA-RNTI值的映射来确定RA-RNTI,节约RA-RNTI资源。
下面再通过几个应用中的示例对本发明进行说明。
示例一
图5为本示例基于映射的方式确定RA-RNTI值的信令流程。如图所示,包括:
步骤一,基站除了广播PRACH分布信息之外,还通过广播消息发送RA-RNTI确定方式的指示信息,及确定排序方式的信息;
例如,该指示信息可以用1bit表示,当该bit的值为‘1’时,表示RA-RNTI值采用基于映射的方式确定;当该bit的值为‘0’时,表示RA-RNTI值按传统的计算方式确定,本示例假定该bit的值为‘1’。对不同类型或格式的PRACH,可以分别设置RA-RNTI确定方式的指示信息;或者,对所有PRACH,也可以共用相同的RA-RNTI确定方式的指示信息。
所述确定排序方式的信息可以包括以下一种或多种信息:排序基于的PRACH的信息;排序基于的PRACH的信息的优先级;同一PRACH信息下的排序规则。其中,排序基于的PRACH的信息可以是PRACH类型、PRACH所在子帧、PRACH使用的频率、PRACH覆盖等级等。这些信息的优先级可以在广播消息中通知或者在标准协议中约定。
指示信息和确定排序方式的信息是可选的。基站还可以划出一组RNTI值作为备选的用于一对一映射的RA-RNTI,并广播给所有UE。
步骤二,UE根据广播消息获得PRACH分布的信息,从中选择一个PRACH发送随机接入前导;
步骤三,UE从广播消息中获取RA-RNTI确定方式的指示信息,根据该指示信息的值确定应采用的RA-RNTI值确定方式,在本示例中,UE确定采用基于映射的RA-RNTI值确定方式;
如果指示信息指示采用传统的计算方式,则UE将采用传统的计算方式确定RA-RNTI值,设置为:后续RAR接收。
步骤四,UE采用基于映射的RA-RNTI值确定方式,根据PRACH分布中PRACH与RA-RNTI值的映射关系,确定发送随机接入前导的PRACH对应的RA-RNTI值,设置为:后续RAR接收。
示例二
本示例是一个具体的进行RA-RNTI映射的示例。其中图6A为一个简单的按照不同类型依时间顺序进行PRACH排序的示意图;图6B为一个简单的 以一对一映射的方式,根据PRACH的序号获得相应RA-RNTI值的示意图。如图6A所示,在示出的该PARCH的时间周期(共10个子帧)内,包括3种类型的PARCH:10个短PRACH(长度小于一个子帧),1个长PRACH(长度大于一个子帧)及一个频域比较宽的PRACH(使用多个子频波)。本示例中,PARCH的类型优先级最高,而这3个类型的顺序是:使用1个子载波的短PARCH,使用1个子载波的长PARCH,使用多个载波的PARCH。类型相同的PARCH,本示例再按照起始子帧从小到大的顺序排序,因此,图中的12个PARCH排序后的序号如图所示,包括PRACH1~PRACH10,PRACH11和PRACH12。如图6B所示,将不同序号的PRACH依次和RA-RNTI取值范围内的RA-RNTI值进行一对一映射,每一个PRACH对应于相同序号的一个RA-RNTI值,RA-RNTI取值范围内的RA-RNTI值的序号可以按照RA-RNTI值从小到大的方式排序而确定,也可以按照RA-RNTI值从大到小的方式排序而确定,或者直接按照已定义好的序号确定。由于UE和基站都按照相同的方式映射,所以UE和基站都能根据PRACH分布的信息、RA-RNTI取值范围和确定排序方式的信息等找到正确的RA-RNTI值。
需要说明的是,本示例虽然是将PARCH的类型作为最高优先级的对PARCH排序的信息,但并不局限于此。也可以将其他信息如PARCH的起始子帧、起始频率等的优先级定为最高优先级。图7为提供了一种指示排序基于的PRACH的信息的优先级的信令格式。如图所示,一个字节可以指示4个排序优先级参数,其中每个优先级占2比特,从前到后分别指示4种参数:PRACH类型、PARCH的起始子帧、PARCH的起始频率和PARCH的覆盖等级(可以用重复次数表示)。而该2比特的值可以取00、01、10和11,表示的优先级从高到低。如图所示,本示例的优先级的信令值为:0001XXXX(X表示为0或1),表示先按PARCH类型排序,对同一类型,再按PARCH的起始子帧排序,因为不存在PARCH类型和起始子帧均相同的多个PARCH,因此UE对后4个bit的值并不关心。所示优先级的顺序也可以固定下来,并通过标准协议进行事先约定。此外,对于同一种优先级的信息,排序方法也是灵活多变的。例如,时间上既可以从早到晚(具体可以为起始子帧从小到大),也可以从晚到早(具体可以为起始子帧从大到小);频率上既可以从高频到低频,也可以从低频到高频。这些,可以通过广播消息进行通知,或 通过标准协议进行事先约定。
本领域普通技术人员可以理解上述实施例的全部或部分步骤可以使用计算机程序流程来实现,所述计算机程序可以存储于一计算机可读存储介质中,所述计算机程序在相应的硬件平台上(如系统、设备、装置、器件等)执行,在执行时,包括方法实施例的步骤之一或其组合。
可选地,上述实施例的全部或部分步骤也可以使用集成电路来实现,这些步骤可以被分别制作成一个个集成电路模块,或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。
上述实施例中的装置/功能模块/功能单元可以采用通用的计算装置来实现,它们可以集中在单个的计算装置上,也可以分布在多个计算装置所组成的网络上。
上述实施例中的装置/功能模块/功能单元以软件功能模块的形式实现并作为独立的产品销售或使用时,可以存储在一个计算机可读取存储介质中。上述提到的计算机可读取存储介质可以是只读存储器,磁盘或光盘等。
工业实用性
通过本发明实施例的方案,可以减少系统所需要的RA-RNTI值的个数,节约RA-RNTI值资源。

Claims (26)

  1. 一种确定随机接入无线网络临时标识RA-RNTI的方法,包括:
    用户设备UE通过广播消息获取物理随机接入信道PRACH分布的信息,选择发送随机接入前导的PRACH;
    所述UE根据所述PRACH分布中PRACH与RA-RNTI值的映射关系,确定所述发送随机接入前导的PRACH对应的RA-RNTI值。
  2. 如权利要求1所述的方法,其中:
    所述PRACH分布的信息包括以下一种或多种信息:
    PRACH分布的时间周期的起点;
    PRACH分布的时间周期的长度;及
    所述时间周期内部署的PRACH的信息;
    其中,所述时间周期内部署的PRACH的信息包括以下一种或多种信息:
    PRACH的类型;
    PRACH的起始子帧;
    PRACH的结束子帧;
    PRACH的长度;
    PRACH的起始载波频率;
    PRACH的结束载波频率;
    PRACH使用的子载波个数;
    PRACH的覆盖等级。
  3. 如权利要求2所述的方法,其中:
    PRACH的类型根据以下一种或多种信息确定:
    PRACH的长度;
    PRACH使用的子载波的个数。
  4. 如权利要求1所述的方法,其中:
    所述PRACH分布中PRACH与RA-RNTI值的映射关系为PRACH与RA-RNTI值间的一一对应关系。
  5. 如权利要求1-4中任一所述的方法,其中:
    所述UE根据所述PRACH分布中PRACH与RA-RNTI值的映射关系,确定所述发送随机接入前导的PRACH对应的RA-RNTI值,包括:
    根据所述PRACH分布的信息和设定的排序方式,确定所述PRACH分布中所述发送随机接入前导的PRACH的序号;
    将RA-RNTI取值范围内具有相同序号的RA-RNTI值,确定为所述发送随机接入前导的PRACH对应的RA-RNTI值。
  6. 如权利要求5所述的方法,其中:
    所述排序方式根据以下一种或多种信息来确定:
    排序基于的PRACH的信息;
    排序基于的PRACH的信息的优先级;
    同一PRACH信息下的排序规则。
  7. 如权利要求6所述的方法,其中:
    所述确定排序方式的信息通过以下方式得到:
    通过广播消息获取;或者,通过标准协议的方式约定;或者,部分信息通过广播消息获取,部分信息通过标准协议的方式约定;
    所述RA-RNTI取值范围通过广播消息获取,或者通过标准协议的方式约定。
  8. 如权利要求1-4、6-7中任一所述的方法,其中:
    所述UE根据所述PRACH分布中PRACH与RA-RNTI值的映射关系,确定所述发送随机接入前导的PRACH对应的RA-RNTI值之前,还包括:
    所述UE从广播消息中获取RA-RNTI确定方式的指示信息,根据所述指示信息确定应采用基于映射的RA-RNTI确定方式时,再根据所述PRACH分布中PRACH与RA-RNTI值的映射关系,确定所述发送随机接入前导的PRACH对应的RA-RNTI值。
  9. 如权利要求8所述的方法,其中:
    所述指示信息包括:
    指示是否采用基于映射的RA-RNTI确定方式的信息;或者
    针对不同类型的PRACH分别指示的是否采用基于映射的RA-RNTI确定方式的信息。
  10. 如权利要求1-4、6-7、9中任一所述的方法,其中:
    所述方法用于窄带物联网NB-IoT系统。
  11. 一种信息发送方法,包括:
    基站确定物理随机接入信道PRACH分布的信息,及用户设备UE基于PRACH与RA-RNTI值的映射确定随机接入无线网络临时标识RA-RNTI需要的信息;
    所述基站发送广播消息,在所述广播消息中携带所述PRACH分布的信息及所述UE基于PRACH与RA-RNTI值的映射确定RA-RNTI需要的信息。
  12. 如权利要求11所述的方法,其中:
    所述PRACH分布的信息包括以下一种或多种信息:
    PRACH分布的时间周期的起点;
    PRACH分布的时间周期的长度;及
    所述时间周期内部署的PRACH的信息;
    其中,所述时间周期内部署的PRACH的信息包括以下一种或多种信息:
    PRACH的类型;
    PRACH的起始子帧;
    PRACH的结束子帧;
    PRACH的长度;
    PRACH的起始载波频率;
    PRACH的结束载波频率;
    PRACH使用的子载波个数;
    PRACH的覆盖等级。
  13. 如权利要求11或12所述的方法,其中:
    所述UE基于PRACH与RA-RNTI值的映射确定RA-RNTI需要的信息包括以下一种或多种信息:
    排序基于的PRACH的信息;
    排序基于的PRACH的信息的优先级;
    同一PRACH信息下的排序规则;
    RA-RNTI确定方式的指示信息;及
    RNTI取值范围的信息。
  14. 如权利要求13所述的方法,其中:
    所述指示信息包括:
    指示是否采用基于映射的RA-RNTI确定方式的信息;或者
    针对不同类型的PRACH分别指示的是否采用基于映射的RA-RNTI确定方式的信息。
  15. 如权利要求11-12、14中任一所述的方法,其中:
    所述方法用于窄带物联网NB-IoT系统。
  16. 一种用户设备,包括随机接入处理装置,其中,所述随机接入处理装置包括:
    信息接收模块,设置为:通过广播消息获取物理随机接入信道PRACH分布的信息;
    PRACH选择模块,设置为:根据所述PRACH分布的信息,选择发送随机接入前导的PRACH;
    随机接入无线网络临时标识RA-RNTI确定模块,设置为:根据所述PRACH分布中PRACH与RA-RNTI值的映射关系,确定所述发送随机接入前导的PRACH对应的RA-RNTI值。
  17. 如权利要求16所述的用户设备,其中:
    所述信息接收模块获取的PRACH分布的信息包括以下一种或多种信息:
    PRACH分布的时间周期的起点;
    PRACH分布的时间周期的长度;及
    所述时间周期内部署的PRACH的信息;
    其中,所述时间周期内部署的PRACH的信息包括以下一种或多种信息:
    PRACH的类型;
    PRACH的起始子帧;
    PRACH的结束子帧;
    PRACH的长度;
    PRACH的起始载波频率;
    PRACH的结束载波频率;
    PRACH使用的子载波个数;
    PRACH的覆盖等级。
  18. 如权利要求16所述的用户设备,其中:
    所述PRACH分布中PRACH与RA-RNTI值的映射关系为PRACH与RA-RNTI值间的一一对应关系。
  19. 如权利要求16-18中任一所述的用户设备,其中:
    所述RA-RNTI确定模块包括:
    序号确定单元,设置为:根据所述PRACH分布的信息和设定的排序方式,确定所述PRACH分布中所述发送随机接入前导的PRACH的序号;
    RA-RNTI确定单元,设置为:将RA-RNTI取值范围内具有相同序号的RA-RNTI值,确定为所述发送随机接入前导的PRACH对应的RA-RNTI值。
  20. 如权利要求19所述的用户设备,其中:
    所述序号确定单元根据所述PRACH分布的信息和设定的排序方式,确定所述PRACH分布中所述发送随机接入前导的PRACH的序号;其中,所述排序方式根据以下一种或多种信息来确定:
    排序基于的PRACH的信息;
    排序基于的PRACH的信息的优先级;
    同一PRACH信息下的排序规则;
    其中,所述确定排序方式的信息通过以下方式得到:通过广播消息获取;或者,通过标准协议的方式约定;或者,部分信息通过广播消息获取,部分信息通过标准协议的方式约定;所述RA-RNTI取值范围通过广播消息获取,或者通过标准协议的方式约定。
  21. 如权利要求16-18、20任一所述的用户设备,其中:
    所述信息接收模块还用于从广播消息中获取RA-RNTI确定方式的指示信息;
    所述RA-RNTI确定模块还用于根据所述指示信息确定是否采用基于映射的RA-RNTI确定方式,如是,再根据所述PRACH分布中PRACH与RA-RNTI值的映射关系,确定所述发送随机接入前导的PRACH对应的RA-RNTI值。
  22. 如权利要求16-18、20任一所述的用户设备,其中:
    所述用户设备为用于窄带物联网NB-IoT系统的用户设备。
  23. 一种基站,包括信息发送装置,其中,所述信息发送装置包括:
    信息确定模块,设置为:确定物理随机接入信道PRACH分布的信息,及用户设备UE基于PRACH与RA-RNTI值的映射确定随机接入无线网络临时标识RA-RNTI需要的信息;
    消息发送模块,设置为:发送广播消息,在所述广播消息中携带所述PRACH分布的信息及所述UE基于PRACH与RA-RNTI值的映射确定RA-RNTI需要的信息。
  24. 如权利要求23所述的基站,包括:
    所述信息确定模块确定的PRACH分布的信息包括以下一种或多种信息:
    PRACH分布的时间周期的起点;
    PRACH分布的时间周期的长度;及
    所述时间周期内部署的PRACH的信息;
    其中,所述时间周期内部署的PRACH的信息包括以下一种或多种信息:
    PRACH的类型;
    PRACH的起始子帧;
    PRACH的结束子帧;
    PRACH的长度;
    PRACH的起始载波频率;
    PRACH的结束载波频率;
    PRACH使用的子载波个数;
    PRACH的覆盖等级。
  25. 如权利要求23或24所述的基站,包括:
    所述信息确定模块确定的UE基于PRACH与RA-RNTI值的映射确定RA-RNTI需要的信息包括以下一种或多种信息:
    排序基于的PRACH的信息;
    排序基于的PRACH的信息的优先级;
    同一PRACH信息下的排序规则;
    RA-RNTI确定方式的指示信息;及
    RA-RNTI取值范围的信息。
  26. 如权利要求23或24所述的基站,包括:
    所述基站为窄带物联网NB-IoT系统的基站。
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019140546A1 (en) * 2018-01-16 2019-07-25 Zte Corporation System and method for performing a random access procedure

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109688627B (zh) 2018-03-29 2022-05-10 新华三技术有限公司 一种无线资源调度方法、网络侧设备及用户设备
US20230106898A1 (en) * 2020-03-09 2023-04-06 Beijing Xiaomi Mobile Software Co., Ltd. Communication method and apparatus, and storage medium

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101472345A (zh) * 2007-12-29 2009-07-01 大唐移动通信设备有限公司 调度标识确定、配置方法与装置及随机接入方法与装置
CN101742684A (zh) * 2008-11-26 2010-06-16 大唐移动通信设备有限公司 确定随机接入无线网络临时标识的方法、基站和终端
CN102740492A (zh) * 2011-04-01 2012-10-17 中兴通讯股份有限公司 随机接入控制方法及系统
US20120275390A1 (en) * 2011-04-29 2012-11-01 Nokia Corporation Cross-Carrier Preamble Responses

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101742682B (zh) * 2008-11-12 2013-03-27 中兴通讯股份有限公司 一种lte系统中的随机接入方法
US20120314652A1 (en) * 2011-06-09 2012-12-13 Pantech Co., Ltd. Apparatus and method for performing random access in wireless communication system
US9924542B2 (en) * 2014-03-27 2018-03-20 Telefonaktiebolaget Lm Ericsson (Publ) Random access procedures for machine-type communications

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101472345A (zh) * 2007-12-29 2009-07-01 大唐移动通信设备有限公司 调度标识确定、配置方法与装置及随机接入方法与装置
CN101742684A (zh) * 2008-11-26 2010-06-16 大唐移动通信设备有限公司 确定随机接入无线网络临时标识的方法、基站和终端
CN102740492A (zh) * 2011-04-01 2012-10-17 中兴通讯股份有限公司 随机接入控制方法及系统
US20120275390A1 (en) * 2011-04-29 2012-11-01 Nokia Corporation Cross-Carrier Preamble Responses

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019140546A1 (en) * 2018-01-16 2019-07-25 Zte Corporation System and method for performing a random access procedure
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