Random access method for multi-numerology operation

Abstract

The present disclosure proposes methods and apparatus for configuring or preconfiguring random access procedures when there are multiple configurable numerologies for one carrier. In some embodiments, a system information block is used to configure the random access numerology set for a wireless device. In other embodiments, the random access numerology set used by a wireless device is implicitly determined based on detection of one or more synchronization signals.

Description

Technical Field

[0001] This disclosure relates generally to wireless communication networks with a hybrid parameter set (numerology), and more specifically to random access procedures in a hybrid parameter set wireless communication system. Background Technology

[0002] Fifth-generation (5G) or next-generation radio (NR) wireless communication networks will use a shared radio access network (RAN) to support a variety of services. Services provided by NR wireless communication networks can include, for example, enhanced mobile broadband (eMBB), machine-type communication (MTC), massive machine-type communication (mMTC), and ultra-reliable low-latency communication (URLLC). These services require different qualities of service (QoS) in terms of latency, data rate, and packet loss rate. For example, URLLC requires low latency and / or high reliability. mMTC, often used for infrequent transmissions of small packets, typically requires long battery life but does not require low latency or high data rates. In contrast, eMBB requires high data rates and often has stringent latency requirements, but these are generally less stringent than those in URLLC.

[0003] To meet the QoS requirements (e.g., latency) for different services, it has been proposed to introduce a hybrid parameter set within a single carrier so that the aforementioned services can be served by a single carrier. In a hybrid parameter set system, component carriers can be divided into two or more sub-bands with different parameter sets to support services with different QoS requirements. The subcarrier spacing within the sub-bands can be 2^n x 15 kHz, where n is configurable. Therefore, there is a need for a random access procedure that can be adapted to NR systems or other wireless communication networks using a hybrid parameter set. To date, there has been little consideration given to random access procedures in NR systems or other wireless communication networks using a hybrid parameter set. Summary of the Invention

[0004] This disclosure discloses methods and apparatus for configuring or pre-configuring a random access procedure when multiple configurable parameter sets exist for a carrier. In some embodiments, a system information block (SIB) is used to configure the random access parameter set of a wireless device. In other embodiments, the random access parameter set used by the wireless device is implicitly determined based on the detection of one or more synchronization (SYNC) signals.

[0005] Exemplary embodiments of this disclosure include a method implemented by a wireless device for random access in a wireless communication network supporting multiple parameter sets. More specifically, the method can be utilized in a hybrid parameter set system that uses one parameter set for random access and a different parameter set for at least one data channel.

[0006] According to an exemplary method, a wireless device receives system information (SI) from a base station or other network node in a wireless communication network. The SI contains configuration information indicating a configuration for random access. Based on the configuration information received in the SI, the wireless device determines a set of parameters for random access. The method further includes performing random access on a sub-frequency band configured according to the determined parameter set to establish a connection with the base station. In some embodiments, the method further includes transmitting user data to the base station or other network node over a shared uplink (UL) channel.

[0007] According to another exemplary method, a wireless device receives an SI (Service Indicator) from a base station or other network node in a wireless communication network. The SI contains configuration information indicating a configuration for random access. Based on the received configuration information in the SI, the wireless device determines a first set of parameters for random access. The method further includes performing random access on a sub-frequency band configured according to the first set of parameters to establish a connection with the base station. After establishing a connection with the network node, the wireless device switches to a second sub-frequency band configured according to a second set of parameters for data transmission on a shared UL (Ultra-Low) channel. In some embodiments, the method further includes transmitting user data to the base station or other network node on the shared UL channel.

[0008] According to another exemplary method, a wireless device receives an SI from a base station or other network node in a wireless communication network. The SI contains configuration information indicating a set of parameters for random access. The method further includes performing random access on a sub-frequency band configured according to the indicated parameter set to establish a connection with the base station. The indicated parameter set enables the base station or other network node to process a random access preamble and subsequent transmissions on a shared UL channel using shared processing hardware. In some embodiments, the method further includes transmitting user data to the base station or other network node on the shared UL channel.

[0009] According to another exemplary method, a wireless device receives an SI (Service Indicator) from a base station or other network node in a wireless communication network. The SI contains configuration information indicating a configuration for random access. Based on the configuration information received in the SI, the wireless device determines a default set of parameters for random access. The method further includes performing random access on a sub-frequency band configured according to the default parameter set to establish a connection with the base station. After establishing a connection with the network node, the wireless device switches to a second sub-frequency band configured according to a second set of parameters for data transmission.

[0010] According to another exemplary method, a wireless device receives an SI (Service Indicator) from a base station or other network node in a wireless communication network. The SI contains configuration information indicating two or more available parameter sets for random access. Based on the configuration information received in the SI, the wireless device selects one of the available parameter sets for random access. The method further includes performing random access using the selected parameter set. In some embodiments, the method further includes, after performing random access, switching to a sub-frequency band configured according to different parameter sets used for data transmission.

[0011] According to another exemplary method, the wireless device detects one or more synchronization signals transmitted by a base station or other network node. The wireless device determines one or more available parameter sets from the detected synchronization signals and performs random access on a sub-frequency band configured according to one of the available parameter sets to establish a connection with the base station or other network node.

[0012] Other embodiments of this disclosure include wireless devices configured to perform the random access method described above. In some embodiments, the wireless device includes interface circuitry for communicating with network nodes in a wireless communication network, and processing circuitry configured to perform the random access method. In some embodiments, the wireless device further includes a memory storing program code that, when executed by the processing circuitry in the wireless device, causes the wireless device to perform the random access method described above.

[0013] Other embodiments of this disclosure include a computer program product comprising executable instructions that, when executed by processing circuitry in a wireless device, cause the wireless device to perform any of the random access methods described above. Further embodiments include a carrier containing the computer program product. The carrier may include one of electronic signals, optical signals, radio signals, or a computer-readable storage medium.

[0014] Other embodiments include a random access method implemented by a base station or other network node in a wireless communication network supporting multiple parameter sets. According to an exemplary method, the base station or network node transmits an SI (Search Engine Information) to wireless devices in an area served by the base station or other network node. The SI contains configuration information for random access, which enables wireless devices in the base station's service area to determine a first set of parameters for random access. The base station or other network node monitors a random access channel in one or more sub-bands configured according to one or more available parameter sets.

[0015] According to an exemplary method, a base station or network node transmits an SI (Search Engine Information) to a wireless device in an area served by the base station or other network node. The SI contains configuration information for random access, which enables the wireless device in the base station's service area to determine a first set of parameters for random access. The base station or other network node monitors a random access channel configured according to the first set of parameters. In one embodiment, the random access method implemented by the base station further includes: receiving a random access preamble from the wireless device on a first sub-band configured according to the first set of parameters, and receiving a UL (Ultra-Low) transmission from the wireless device on a shared UL channel configured according to a second set of parameters different from the first set of parameters.

[0016] According to another exemplary method, a base station or other network node in a wireless communication network transmits an SI to a wireless device in an area served by the base station or other network node. The SI contains configuration information including two or more sets of available parameters for random access. The base station or network node monitors one or more random access channels in a sub-frequency band configured according to the available parameter sets. In some embodiments, the random access method implemented by the base station further includes receiving a random access preamble from the wireless device in a sub-frequency band configured according to one of the available parameter sets.

[0017] According to another exemplary method, a base station or other network node in a wireless communication network transmits an SI to a wireless device in an area served by the base station or other network node. The SI contains configuration information indicating a set of parameters for random access. The base station or other network node monitors a random access channel configured according to the indicated set of parameters. In some embodiments, the base station then uses processing hardware adapted to receive data transmissions from the wireless device on a shared UL channel to receive a preamble transmitted on the random access channel.

[0018] Other embodiments of this disclosure include base stations or other network nodes configured to perform the random access method described above. In some embodiments, the base station or network node includes interface circuitry for communicating with a wireless device in a wireless communication network, and processing circuitry configured to perform the random access method. In some embodiments, the base station or network node further includes a memory storing program code that, when executed by the processing circuitry in the wireless device, causes the wireless device to perform the random access method described above.

[0019] Other embodiments of this disclosure include a computer program product comprising executable instructions that, when executed by processing circuitry in a base station or network node, cause the base station or network node to perform any of the random access methods described above. Further embodiments include a carrier containing the computer program product. The carrier may include one of electronic signals, optical signals, radio signals, or a computer-readable storage medium. Attached Figure Description

[0020] Figure 1 The illustration shows a wireless communication network that supports two or more sub-bands with different parameter sets.

[0021] Figure 2 An example of a mixed parameter set is illustrated.

[0022] Figures 3a-3c illustrate possible configurations of the discovery reference signal (DRS) in a hybrid parameter set wireless communication network.

[0023] Figure 4 The illustration shows a first exemplary random access method implemented by a wireless device in a hybrid parameter set wireless communication network.

[0024] Figure 5 The illustration shows a second exemplary random access method implemented by a wireless device in a hybrid parameter set communication network.

[0025] Figure 6 The illustration shows a third exemplary random access method implemented by a wireless device in a hybrid parameter set communication network.

[0026] Figure 7 The illustration shows a fourth exemplary random access method implemented by a wireless device in a hybrid parameter set communication network.

[0027] Figure 8 The illustration shows a fifth exemplary random access method implemented by a wireless device in a hybrid parameter set communication network.

[0028] Figure 9 The illustration shows an exemplary wireless device configured for operation in a mixed-parameter set wireless communication network.

[0029] Figure 10 The illustration shows a sixth exemplary random access method implemented by a wireless device in a hybrid parameter set wireless communication network.

[0030] Figure 11 The illustration shows a wireless device according to another embodiment of a configuration for operation in a mixed parameter set wireless communication network.

[0031] Figure 12 The illustration shows a first exemplary random access method implemented by a base station or other network node in a hybrid parameter set wireless communication network.

[0032] Figure 13 The illustration shows a second exemplary random access method implemented by a base station or other network node in a hybrid parameter set wireless communication network.

[0033] Figure 14The illustration shows a third exemplary random access method implemented by a base station or other network node in a hybrid parameter set wireless communication network.

[0034] Figure 15 The illustration shows a fourth exemplary random access method implemented by a base station or other network node in a hybrid parameter set wireless communication network.

[0035] Figure 16 The illustration shows an exemplary network node (e.g., a base station) configured for operation in a mixed-parameter set wireless communication network.

[0036] Figure 17 The illustration shows another exemplary random access method implemented by a base station or other network node in a hybrid parameter set wireless communication network.

[0037] Figure 18 The illustration depicts a network node (e.g., a base station) according to another embodiment of its configuration for operation in a mixed-parameter set wireless communication network.

[0038] Figure 19 The illustration shows a wireless device according to another embodiment of a configuration for operation in a mixed parameter set wireless communication network.

[0039] Figure 20 The illustration shows a wireless device according to another embodiment of a configuration for operation in a mixed parameter set wireless communication network.

[0040] Figure 21 The illustration depicts a network node (e.g., a base station) according to another embodiment of its configuration for operation in a mixed-parameter set wireless communication network.

[0041] Figure 22 The illustration depicts a network node (e.g., a base station) according to another embodiment of its configuration for operation in a mixed-parameter set wireless communication network. Detailed Implementation

[0042] Now turn to the attached image. Figure 1 An exemplary wireless communication network 10 supporting a hybrid set of parameters for user data transmission is illustrated. The communication network 10 includes multiple cells 12, although... Figure 1 Only one cell 12 is shown. The base station 20 in each cell 12 communicates with the wireless devices in the cell 12, which are generally indicated by the label 30. Figure 1The diagram illustrates three (3) wireless devices 30: an eMBB device 30a configured for MBB communication, an mMTC device 30b configured for MTC, and a URLLC device 30c configured for URLLC. A base station 20 communicates with the wireless devices 30 via a single component carrier divided into sub-bands configured according to different parameter sets. In this example, the base station 20 communicates with the eMBB device 30a, the mMTC device 30b, and the URLLC device 30c via data channels in the first, second, and third sub-bands configured according to different parameter sets, respectively.

[0043] For illustrative purposes, exemplary embodiments of this disclosure will be described in the context of NR communication networks. However, those skilled in the art will understand that the invention is more generally applicable to other wireless communication networks 10 that support mixed parameter sets for user data transmission.

[0044] Figure 2 An example of a mixed parameter set on a component carrier (CC) 50 is shown. More specifically, Figure 2 The diagram illustrates two sub-bands 52, designated as sub-band 1 (SB1) and sub-band 2 (SB2), respectively. Compared to SB2, SB1 is configured with a relatively long symbol period and a relatively narrow subcarrier spacing (e.g., 15 kHz). Compared to SB1, SB2 is configured with a relatively short symbol period and a relatively wide subcarrier spacing (e.g., 60 kHz).

[0045] Figures 3A-3C The illustration shows a possible configuration of the Discovery Reference Signal (DRS) in a wireless communication network 10 supporting a hybrid parameter set for user data transmission. The DRS comprises a set of signals that can be used, for example, for cell or Transmitter / Receiver Point (TRP) discovery and identification, at least coarse time and frequency synchronization, and mandatory SI acquisition for initial random access. The DRS may contain elements similar to the Master Information Block (MIB), Mobility Reference Signal (MRS), and Channel State Information Reference Signal (CSI-RS) in Long Term Evolution (LTE) systems. Furthermore, the Signature Sequence (SS) used in acquiring minimal system information may be included in the DRS. In NR networks, the DRS corresponds to the Synchronization Signal Block (SSB).

[0046] Figures 3A-3C Different DRS configurations are shown for component carriers 50 with two sub-bands 52. Figure 3ATwo subbands (or RAN slices) 52 with different parameter sets of the same DRS signal sharing a single parameter set are shown. The discovery of other parameter sets is determined by the transmission mode of the DRS signal or the content of the DRS. Alternatively, only the DRS subband contains the information required for initial system access, and other information (such as information related to multiple parameter sets) is transmitted to the radio device 30 using dedicated signaling. This design saves DRS overhead for mixed parameter set operation and simplifies DRS search, but a radio device 30 that preferentially selects the second parameter set should also support the first parameter set. However, the DRS should be carefully designed so that the radio device 30 can derive sufficiently good timing for different parameter sets. We note that it is possible to transmit the DRS using parameter sets different from parameter sets 1 and 2: 3GPP currently discusses a default DRS parameter set for each frequency band or carrier frequency. If the carrier operates with a different parameter set than this default parameter set (e.g., due to deployment or usage), then the DRS parameter set will obviously be different from parameter sets 1 and 2. This situation is even relevant for systems that operate their carriers using a single set of parameters different from the default set.

[0047] Figure 3B This illustrates two subband-specific DRSs located in the same portion of the carrier bandwidth. The actual subband size / placement is indicated by what the corresponding DRS carries (e.g., the MIB transmitted as part of the DRS). This design simplifies DRS search, and a single wireless device 30 does not need to support multiple parameter sets operating, but synchronous monitoring performance may degrade because the DRS of parameter set 2 is not self-contained in subband 52. Furthermore, the DRS overhead is twice that of the first option.

[0048] Figure 3C This illustrates a DRS with multiple parameter sets when each sub-band 52's DRS is self-contained. In the time domain, some alignment can exist between DRSs with different parameter sets. The actual sub-band size / placement is indicated by the content carried by one of them or the corresponding DRS. In-band transmission of the DRS has good performance in terms of synchronization and radio resource management (RRM) related measurements, but the location of the DRS should be adapted to the bandwidth size / placement between sub-bands, and due to the unpredictable nature of the DRS location, the wireless device 30 may need to spend a longer time searching for the DRS. In this example, the DRS overhead is twice that of the first option.

[0049] Although different DRS examples are presented above, those skilled in the art will understand that other DRS configurations are possible.

[0050] Assuming NR has a large supported frequency range (from less than -1 GHz to 100 GHz), NR may define multiple parameter sets. The current discussion concerns how the DRS / SYNC signal should be configured. One possibility is to connect the DRS signal parameter set to the operating frequency / band, regardless of the parameter sets used for other transmissions on the carrier. Therefore, a carrier using a single parameter set may contain a different DRS parameter set than the one used for data transmission.

[0051] Another aspect to consider is how to configure the Random Access Channel (RACH) in the hybrid parameter set wireless communication network 10. One possibility is that the wireless communication network 10 may have multiple RACHs using different parameter sets. Another possibility is that when hybrid parameter sets are supported on the traffic channels used for data transmission, the wireless communication network 10 may have RACHs configured according to a single parameter set.

[0052] To address the problems arising from wireless communication networks 10 that use mixed parameter sets for data transmission on service channels, this disclosure describes methods for predefining or preconfiguring random access procedures. In the following description, parameter set is used broadly to refer to a sub-band configured to a parameter set.

[0053] Solution 1: Configuring Random Access Behavior of Wireless Device 30 Using System Information Blocks In an exemplary embodiment, different configurable random access options may exist. Base station 20 or other network nodes may include indicators in the SIB to configure wireless device 30 to use a specific random access option. Below are some example options for the random access procedure: Option 1: Wireless device 30 should perform random access via a single set of parameters. According to this configuration, the wireless device 30 should first access the wireless communication network 10 via a parameter set, and then switch to the preferred parameter set based on the type of wireless device 30, the service type, and / or the pre-configured RAN slice selection rules. The parameter set used for random access can be a parameter set configured in the system information or a predefined default parameter set.

[0054] As one type of parameter set switching implementation, the wireless device 30 directly switches to another parameter set without performing time advance (TA) correction using the preferred parameter set. The TA configuration of one parameter set can be directly used for another parameter set. Furthermore, it is also applicable to derive the power adjustment of another parameter set based on the accumulated power adjustment of one parameter set. For this implementation, it is assumed that there is good synchronization between the parameter set and the cyclic prefix (CP) length used in the target parameter set that can handle TA inaccuracies.

[0055] As another implementation of parameter set switching, wireless device 30 can perform parameter set switching with specific TA correction using Physical Random Access Channel (PRACH) transmission in the UL or other UL detection parameter signals (SRS) transmission. Based on PRACH (or ULSRS) detection, the TA for the target parameter set is derived and sent to wireless device 30 to correct the timing for UL signal transmission.

[0056] As an example, when wireless device 30 switches from a first parameter set with a 15kHz subcarrier spacing to a second parameter set with a 60kHz subcarrier spacing, the second parameter set typically requires higher TA accuracy due to the use of a shorter CP. In this case, wireless device 30 can be configured to use the second parameter set for data transmission to transmit another PRACH (or any other reference signal such as ULSRS). For a switch in the opposite direction, wireless device 30 can switch from a parameter set with a short CP to a parameter set with a longer CP. In this case, since the TA derived based on the default parameter set is good enough, specific TA training is not required.

[0057] Option 2: Wireless device 30 determines the parameter set for random access based on the service type. According to this configuration, the service type-to-parameter set mapping can be pre-configured for wireless device 30. When a session request exists from wireless device 30, wireless device 30 determines the preferred parameter set based on the session type. Wireless device 30 can directly access wireless communication network 10 via the preferred parameter set. In this setting, SI contains a list of PRACH configurations, with one list entry for each (group of) services. As an example, wireless device 30 applying URLLC services can access wireless communication network 10 via a parameter set with a wide subcarrier spacing.

[0058] As another example, a particular wireless device 30 may be designed for a specific application, such as a wireless device 30 for mMTC or URLLC. For such a wireless device 30, the wireless device 30 can select a preferred set of parameters for random access from a list of parameter sets supported by the network, depending on the device type of the wireless device 30. A wireless device 30 particularly suited to mMTC can access the wireless communication network 10 via a parameter set with the narrowest subcarrier spacing (e.g., 3.75 kHz), while a wireless device 30 particularly suited to URLLC can access the wireless communication network 10 via a parameter set with the widest subcarrier spacing (e.g., 60 kHz).

[0059] Option 3: Wireless device 30 adaptively selects a set of parameters for random access. According to this configuration, the wireless communication network 10 configures the wireless device 30 to select a preferred parameter set for random access; that is, the SI contains a list of supported PRACH parameter sets, and the wireless device 30 selects the preferred parameter set. The wireless device 30 near the base station 20 or other TRPs can select a parameter set with a wide subcarrier spacing and a short transmission time interval (TTI) to reduce random access latency. However, for the wireless device 30 located far from the TRP, the wireless device 30 can select a parameter set with a narrow subcarrier spacing and a long TTI to improve the robustness of random access messages. The wireless device 30 can then switch to the preferred parameter set (based on the configuration from the wireless communication network 10) according to QoS requirements.

[0060] Option 4: Single-parameter set system One possible setup is a single-parameter or multi-parameter carrier, where the DRS parameter set differs from one or more parameter sets used on the carrier in other cases. One reason for using this approach could be that the DRS parameter set is associated with a frequency band or carrier frequency, but the carrier operates using a different parameter set. Several PRACH preamble design proposals exist that do not require dedicated PRACH Fast Fourier Transform (FFT) hardware in the receiver, but allow for the reuse of data channel FFT hardware. In this case, the PRACH parameter set should preferably match the parameter set used for other UL transmissions. The base station 20 or other network nodes in the wireless communication network 10 can therefore indicate in the SI the same PRACH parameter set as the parameter set used for UL transmissions on the carrier (or at least related in that sense: the PRACH preamble can be processed using the same hardware).

[0061] Solution 2: Wireless device 30 derives random access procedure based on SYNC signal monitoring. According to this option, wireless device 30 derives the parameter set for random access based on the detection of (one or more) SYNC signals.

[0062] As an example, wireless device 30 derives possible parameter sets for random access based on parameter sets (or multiple parameter sets) of the SYNC signal(s). Wireless device 30 selects (or derives via rules from the SYNC parameter sets) the parameter set used for SYNC signal transmission for random access. If more than one parameter set has been used for the SYNC signal, different pre-configurations exist.

[0063] • It is possible to predefine whether wireless device 30 is allowed to select any parameter set for random access from the parameter set used by the SYNC signal; or • The ability to predefine the wireless device 30 to select a preferred set of parameters from the parameter set used by the SYNC signal based on the type or service type of the wireless device 30; or • It can predefine a single fixed set of parameters for random access selected by the wireless device 30. For example, for such... Figure 3B For the designed SYNC, the wireless device 30 should select the parameter set of the first part of the SYNC signal (i.e., parameter set 1).

[0064] Regarding whether wireless device 30 is allowed to perform random access via any set of parameters, or whether different wireless devices 30 are allowed to perform random access via different sets of parameters, the wireless communication network 10 can monitor PRACH transmissions across multiple parameter sets, which increases the computational complexity on the network side. It is expected that this will result in lower latency or more robust random access performance gains for the random access messages.

[0065] As another example, the parameter set used for random access is indicated by a SYNC sequence. Multiple SYNC sequences can exist, and these SYNC sequences are divided into two groups: SYNC sequences from the first group indicate that the wireless device 30 can initiate random access via the parameter set used by the detected sequence; otherwise, the wireless device 30 can use any parameter set used by the SYNC sequence.

[0066] Against this background, various embodiments of the present disclosure are described below.

[0067] Figure 4 An exemplary random access method 100 is illustrated in a hybrid parameter set wireless communication network 10 that uses a hybrid parameter set to support different services. The hybrid parameter set communication network 10 supports data transmissions to and from the wireless device 30 via UL and / or downlink traffic channels (such as uplink shared channel (USCH) and / or downlink shared channel (DSCH)). When the wireless device 30 operates in the wireless communication network 10 that supports a hybrid parameter set for different services or devices, the wireless device 30 may be unaware of the resources and / or parameter sets used by the RACH. Figure 4In the method shown, wireless device 30 receives an SI (block 105) from base station 20 or other network nodes in a wireless communication network. The SI contains configuration information indicating a configuration for random access. The configuration may include, for example, a set of parameters for random access. Based on the configuration information received in the SI, wireless device 30 determines the set of parameters for random access (block 110). It will be understood that wireless communication network 10 may employ a single set of parameters for RACH, or different sets of parameters on different RACHs, even when multiple sets of parameters are supported for user services. After determining the set of parameters for random access based on the configuration information, wireless device 30 performs random access on a sub-band configured according to the determined set of parameters to establish a connection with base station 20 (block 115). For random access, a sub-band may simply be a carrier or frequency resource used for random access.

[0068] In some embodiments of method 100, the wireless communication network 10 may use a single parameter set for random access, even when multiple parameter sets are supported for transmission over the user traffic channel. In this case, the wireless device 30 may perform random access on a first sub-band configured according to a pre-configured default parameter set to establish a connection with the wireless device, and then switch to a second sub-band configured according to a second parameter set for data transmission over the traffic channel. The second sub-band may be selected based on the type of wireless device, service type, or based on predefined slice selection rules.

[0069] In some embodiments of method 100, the wireless device 30 may determine a timing advance during random access in the first sub-band and use the timing advance for the first sub-band for data transmission in the second sub-band. In other embodiments, the wireless device 30 may obtain a timing advance from the second sub-band after establishing a connection with the base station 20 or other network node in the first sub-band and use the timing advance for the second sub-band for data transmission in the second sub-band. For example, the timing advance can be obtained by transmitting a random access preamble in the second sub-band and receiving a random access response that includes the timing advance for the second sub-band. In another embodiment, the mobile device 30 may transmit a reference signal in the second sub-band and receive a response message in response to the reference signal that includes the timing advance for the second sub-band.

[0070] In some embodiments of method 100, the wireless communication network 10 may support RACH using different parameter sets. In this case, the configuration information transmitted as part of the SI may contain a list of two or more available parameter sets for random access. The wireless device 30 may select a sub-band configured according to one of the available parameter sets and perform random access in the selected sub-band.

[0071] In an exemplary embodiment of method 100, wireless device 30 generates a mapping that associates service types with corresponding parameter sets based on configuration information. When wireless device 30 needs to perform random access, it determines the service type for connection to base station 20 or other network nodes and selects a sub-frequency band configured according to the parameter set associated with the service type. Wireless device 30 then performs random access on the selected sub-frequency band. The mapping that associates service types with corresponding parameter sets can be stored in the memory of wireless device 30.

[0072] In another embodiment of method 100, the wireless device 30 may be configured to select a parameter set and / or sub-frequency band based on the distance to base station 20 or other network nodes. In this embodiment, the wireless device 30 determines the distance to base station 20 or other network nodes and selects an available parameter set based on that distance. The wireless device 30 then selects a sub-frequency band configured according to the selected parameter set.

[0073] In other embodiments of method 100, the wireless device 30 selects a sub-band and / or parameter set based on the service type and / or device type used for the connection to base station 20 or other network nodes. In these embodiments, the wireless device 30 determines the service type for the desired connection to base station 20 or other network nodes, or determines the device type of the wireless device 30. The wireless device 30 may select the parameter set based on the service type, device type, or both used for the connection to base station 20 or other network nodes.

[0074] In another embodiment of method 100, configuration information indicates a parameter set for random access that is substantially the same as the parameter set used for data transmission on a UL service channel, such as a shared UL channel. In this context, the parameter set is substantially the same if the same processing hardware in base station 20 or other network nodes can be used to receive both the preamble transmitted by radio device 30 during the random access procedure and user data transmission on the UL service channel. In this case, radio device 30 performs random access on a sub-band configured according to the parameter set indicated in the system information to establish a connection to base station 20 or other network nodes.

[0075] Figure 5 An exemplary random access method 120 according to another embodiment implemented by a wireless device 30 in a hybrid parameter set wireless communication network 10, which supports hybrid parameter sets to support different services, is illustrated. Figure 5In the method illustrated, wireless device 30 receives an SI (block 125) from base station 20 or other network nodes in a wireless communication network. The SI contains configuration information indicating a configuration for random access. Based on the configuration information received in the SI, wireless device 30 determines a first set of parameters for random access (block 130). Method 120 further includes performing random access on a first sub-band configured according to the indicated first set of parameters to establish a connection with base station 20 (block 135). After establishing a connection with the network node, wireless device 30 switches to a second sub-band configured according to a second set of parameters for data transmission over a shared UL channel (block 140). In one embodiment, the first and second sub-bands may respectively include carrier or frequency resources for random access and data transmission.

[0076] In other embodiments of method 120, the wireless device 30 selects a sub-band and / or parameter set based on the service type and / or device type used for the connection to base station 20 or other network nodes. In these embodiments, the wireless device 30 determines the service type for the desired connection to base station 20 or other network nodes, or the device type of the wireless device 30. The wireless device 30 may select the parameter set based on the service type, device type, or both used for the connection to base station 20 or other network nodes.

[0077] In other embodiments of method 120, the wireless device 30 selects sub-bands and / or parameter sets based on predefined slice selection rules.

[0078] Some embodiments of method 120 further include deriving power adjustments for data transmission in a second sub-band based on accumulated power adjustments on the first sub-band.

[0079] In some embodiments of method 120, the wireless device 30 may obtain a timing advance during random access in the first sub-band and use the timing advance for the first sub-band for data transmission in the second sub-band. In other embodiments, the wireless device 30 may obtain a timing advance from the second sub-band after establishing a connection with the base station 20 or other network node in the first sub-band and use the timing advance for the second sub-band for data transmission in the second sub-band. For example, the timing advance can be obtained by transmitting a random access preamble in the second sub-band and receiving a random access response that includes the timing advance for the second sub-band. In another embodiment, the mobile device 30 may transmit a reference signal in the second sub-band and receive a response message in response to the reference signal that includes the timing advance for the second sub-band.

[0080] In an exemplary embodiment of method 120, wireless device 30 generates a mapping that associates service types with corresponding parameter sets based on configuration information. When wireless device 30 needs to perform random access, it determines the service type for connection to base station 20 or other network nodes, and subsequently determines a first parameter set based on the service type. The mapping that associates service types with corresponding parameter sets may be stored in the memory of wireless device 30.

[0081] In some embodiments of method 120, the wireless communication network 10 may support RACH using different parameter sets. In this case, the configuration information transmitted as part of the SI may contain a list of two or more available parameter sets for random access. In this case, the wireless device 30 selects a sub-band configured according to one of the available parameter sets and performs random access in the selected sub-band.

[0082] In another embodiment of method 120, the wireless device 30 may be configured to select a first set of parameters and / or a sub-frequency band based on the distance to base station 20 or other network nodes. In this embodiment, the wireless device 30 determines the distance to base station 20 or other network nodes and selects an available set of parameters as the first set of parameters based on that distance.

[0083] In another embodiment of method 120, the wireless device 30 may be configured to select a first parameter set and / or sub-band based on the service type of the connection to the base station or network node. In this embodiment, the wireless device 30 determines the service type of the connection to the base station or network node and selects an available parameter set as the first parameter set based on the service type.

[0084] In another embodiment of method 120, the wireless device 30 may be configured to select a first parameter set and / or sub-band based on the device type of the wireless device. In this embodiment, the wireless device 30 determines the device type of the wireless device and selects an available parameter set as the first parameter set based on the device type.

[0085] In another embodiment of method 120, the configuration information indicates a parameter set for random access that is substantially the same as the parameter set used for data transmission on a UL service channel, such as a shared UL channel. In this context, the parameter set is substantially the same if the same processing hardware in base station 20 or other network nodes can be used to receive both the preamble transmitted by radio device 30 during the random access procedure and user data transmission on the UL service channel. In this case, radio device 30 performs random access on a sub-band configured according to the parameter set indicated in SI to establish a connection to base station 20 or other network nodes.

[0086] Figure 6An exemplary random access method 150 is illustrated according to another embodiment implemented by a wireless device 30 in a hybrid parameter set wireless communication network 10, which supports hybrid parameter sets to support different services. In this embodiment, the wireless device 30 receives an SI (block 155) from a base station 20 or other network node in the wireless communication network. The SI contains configuration information indicating a parameter set for random access. The wireless device performs random access on a sub-band configured according to the indicated parameter set to establish a connection with the base station 20 (block 160). The indicated parameter set enables the base station 20 or other network node to process the random access preamble and subsequent transmissions on a shared UL channel using shared processing hardware. In some embodiments, method 140 further includes transmitting user data to the base station 20 or other network node on the shared UL channel (block 165).

[0087] Some embodiments of method 150 further include, after performing random access, switching to a second sub-band configured according to a different set of parameters for data transmission, such as data transmission over a UL shared channel. In some embodiments, the second sub-band / parameter set can be selected based on one or more of the device type, service type, and / or distance from a base station or network node. In other embodiments, the second sub-band / parameter set can be selected based on a configuration received from the network.

[0088] In some embodiments of method 150, the wireless device 30 may obtain a timing advance during random access in the first sub-band and use the timing advance for the first sub-band for data transmission in the second sub-band. In other embodiments, the wireless device 30 may obtain a timing advance from the second sub-band after establishing a connection with the base station 20 or other network node in the first sub-band and use the timing advance for the second sub-band for data transmission in the second sub-band. For example, the timing advance can be obtained by transmitting a random access preamble in the second sub-band and receiving a random access response that includes the timing advance for the second sub-band. In another embodiment, the mobile device 30 may transmit a reference signal in the second sub-band and receive a response message in response to the reference signal that includes the timing advance for the second sub-band.

[0089] Figure 7An exemplary random access method 200 according to another embodiment implemented by a wireless device 30 in a hybrid parameter set wireless communication network 10, which supports hybrid parameter sets to support different services, is illustrated. In this embodiment, the wireless device 30 receives an SI (box 210) from a base station 20 or other network node in the wireless communication network. The SI contains configuration information indicating a configuration for random access. Based on the configuration information received in the SI, the wireless device 30 determines a default parameter set for random access (box 220). Method 200 further includes performing random access on a first sub-frequency band configured according to the indicated parameter set to establish a connection with the base station 20 or other network node (box 230). After establishing a connection with the network node, the wireless device 30 switches to a second sub-frequency band configured according to a second parameter set for data transmission (box 240).

[0090] In some embodiments of method 200, a second sub-band parameter set can be determined based on one or more of the device type, service type, and / or distance from the base station or network node of the wireless device.

[0091] In some embodiments of method 200, the wireless device 30 may obtain a timing advance during random access in the first sub-band and use the timing advance for the first sub-band for data transmission in the second sub-band. In other embodiments, the wireless device 30 may obtain a timing advance from the second sub-band after establishing a connection with the base station 20 or other network node in the first sub-band and use the timing advance for the second sub-band for data transmission in the second sub-band. For example, the timing advance can be obtained by transmitting a random access preamble in the second sub-band and receiving a random access response that includes the timing advance for the second sub-band. In another embodiment, the mobile device 30 may transmit a reference signal in the second sub-band and receive a response message in response to the reference signal that includes the timing advance for the second sub-band.

[0092] Figure 8 An exemplary random access method 250 is illustrated according to another embodiment implemented by a wireless device 30 in a hybrid parameter set wireless communication network 10, which supports hybrid parameter sets to support different services. In this embodiment, the wireless device 30 receives an SI (box 260) from a base station 20 or other network node in the wireless communication network. The SI contains configuration information indicating two or more available parameter sets for random access. Based on the configuration information received in the SI, the wireless device 30 selects one of the available parameter sets for random access (box 270). Method 250 further includes performing random access on a PRACH configured according to the indicated parameter set to establish a connection with the base station 20 (box 280).

[0093] In some embodiments of method 250, a set of parameters for random access is selected based on one or more of the device type, service type, and / or distance from the base station or network node of the wireless device.

[0094] Some embodiments of method 250 further include, after performing random access, switching to a sub-frequency band configured according to different sets of parameters for data transmission, such as data transmission over a UL shared channel. The sub-frequency band for data transmission can be selected based on one or more of the wireless device type, service type, and / or distance from a base station or network node.

[0095] In some embodiments of method 250, the wireless device 30 may obtain a timing advance during random access and use the timing advance for data transmission in a sub-band selected for data transmission. In other embodiments, the wireless device 30 may obtain the timing advance from a sub-band selected for data transmission in a second sub-band after establishing a connection with the base station 20 or other network node. For example, the timing advance may be obtained by transmitting a random access preamble in the sub-band and receiving a random access response that includes the timing advance for the second sub-band. In another embodiment, the mobile device 30 may transmit a reference signal in the sub-band and receive a response message in response to the reference signal that includes the timing advance for the sub-band.

[0096] Figure 9 The main functional components of a wireless device 300 are illustrated, which is configured for use in a hybrid parameter set wireless communication network 10. The wireless device 300 can be configured to perform... Figure 4-8 One or more methods are shown in the figure. The wireless device 300 includes processing circuitry 310, interface circuitry 340, and memory 350.

[0097] Interface circuitry 340 is coupled to one or more antennas (not shown) and includes radio frequency (RF) components necessary for communication with base station 20 via a wireless communication channel. Typically, the RF components include transmitters and receivers adapted for communication according to NR standards or other radio access technologies (RATs).

[0098] Processing circuitry 310 processes signals transmitted to or received by wireless device 300. Such processing includes encoding and modulation of transmitted signals, and demodulation and decoding of received signals. Processing circuitry 310 includes a system information unit 315 for receiving and processing SI and other configuration information transmitted by base station 20, a configuration unit 320 for configuring a random access procedure for wireless device 30, and a random access unit 325 for performing the random access procedure. In some embodiments, processing circuitry 310 of wireless device 300 further includes a transmission unit 330 for transmitting data. As an example, transmission unit 330 may be configured to transmit data on a UL shared channel. Processing circuitry 310 may include one or more microprocessors, hardware, firmware, or combinations thereof. In one embodiment, system information unit 315 and random access unit 325 are implemented using a single microprocessor. In other embodiments, system information unit 315 and random access unit 325 are implemented using different microprocessors.

[0099] Memory 350 includes both volatile and non-volatile memory for storing computer program code and data required for operation of processing circuitry 310. Memory 350 may include any tangible, non-transitory computer-readable storage medium for storing data, including electronic, magnetic, optical, electromagnetic, or semiconductor data storage. Memory 350 stores a computer program 360 including executable instructions that configure processing circuitry 310 to perform operations as described herein. Figures 4-8 The method generally involves storing computer program instructions and configuration information in non-volatile memory such as read-only memory (ROM), erasable programmable read-only memory (EPROM), or flash memory. Temporary data generated during operation may be stored in volatile memory such as random access memory (RAM). In some embodiments, the computer program 360 for configuring the processing circuitry 310 as described herein may be stored in removable memory such as portable compact optical disc, portable digital video optical disc, or other removable media. The computer program 360 may also be implemented on a carrier such as electronic signals, optical signals, radio signals, or computer-readable storage media.

[0100] Figure 10The illustration shows another random access method 400 for a wireless communication network 10 that supports multiple parameter sets for different service types. A wireless device 30 that needs to perform random access to connect to a base station 20 or other network node detects one or more synchronization signals transmitted by the base station 20 or other network node (block 410). The wireless device 30 determines one or more available parameter sets from the detected synchronization signals (block 420) and performs random access on a sub-frequency band configured according to one of the available parameter sets to establish a connection with the base station 20 or other network node (block 430). In one embodiment, the sub-frequency band includes carrier frequencies or frequency resources for random access.

[0101] In some embodiments of method 400, wireless device 30 determines a set of parameters of the detected synchronization signals and regards the reference set of the detected synchronization signals as a set of available parameters for random access.

[0102] In other embodiments of method 400, wireless device 30 determines a set of parameters for the detected synchronization signal, and then determines a set of parameters for RACH from the set of parameters of the detected synchronization signal based on predetermined rules.

[0103] Regardless of how the available parameter set is determined, in some embodiments of method 400, wireless device 30 may select one of the available parameter sets based on the service type for the desired connection and / or the device type of wireless device 30. In these embodiments, wireless device 30 determines the service type or the device type of the wireless device for the connection with base station 20 or other network nodes. Wireless device 30 selects a sub-band configured according to one of the available parameter sets based on the service device, device type, or both, and performs random access on the selected sub-band.

[0104] Figure 11 A wireless device 500 according to another embodiment is illustrated. The wireless device 500 includes processing circuitry 510, interface circuitry 540, and memory 550.

[0105] Interface circuitry 540 is coupled to one or more antennas (not shown) and includes RF components necessary for communication with base station 20 via a wireless communication channel. Typically, the RF components include transmitters and receivers adapted for communication according to the NR standard or other RATs.

[0106] Processing circuitry 510 processes signals transmitted to or received by wireless device 500. Such processing includes encoding and modulation of transmitted signals, and demodulation and decoding of received signals. Processing circuitry 510 includes a synchronization unit 515 for receiving and processing synchronization signals transmitted by base station 20, a configuration unit 520 for configuring a random access procedure for wireless device 500, and a random access unit 525 for performing the random access procedure. In some embodiments, processing circuitry 510 of wireless device 500 further includes a transmission unit 530 for transmitting data. As an example, transmission (TX) unit 530 may be configured to transmit data on a UL shared channel. Processing circuitry 510 may include one or more microprocessors, hardware, firmware, or a combination thereof. In one embodiment, synchronization unit 515 and random access unit 525 are implemented using a single microprocessor. In other embodiments, synchronization unit 515 and random access unit 525 are implemented using different microprocessors.

[0107] Memory 550 includes both volatile and non-volatile memory for storing computer program code and data required for operation of processing circuitry 510. Memory 550 may include any tangible, non-transitory computer-readable storage medium for storing data, including electronic, magnetic, optical, electromagnetic, or semiconductor data storage. Memory 550 stores a computer program 555 including executable instructions that configure processing circuitry 510 to perform operations as described herein. Figure 10 Method 400. Generally, computer program instructions and configuration information are stored in non-volatile memory such as ROM, EPROM, or flash memory. Temporary data generated during operation may be stored in volatile memory such as RAM. In some embodiments, a computer program 555 for configuring the processing circuitry 510 as described herein may be stored in removable memory such as a portable compact optical disc, portable digital video optical disc, or other removable media. The computer program 555 may also be implemented on a carrier such as an electronic signal, optical signal, radio signal, or computer-readable storage medium.

[0108] Figure 12An exemplary random access method 600 implemented by a base station 20 or other network node in a wireless communication network 10, which supports mixed parameter sets for different service types, is illustrated. The base station 20 or other network node transmits an SI (Section on Random Access) to a wireless device 30 in an area served by the base station 20 or other network node (box 610). The SI contains configuration information for random access, which enables the wireless device 30 in the service area of ​​the base station 20 to determine at least one available parameter set for random access. The base station 20 or other network node monitors a random access channel in one or more sub-bands configured according to one or more available parameter sets (box 620). In one embodiment, the sub-band includes carriers or frequency resources for random access.

[0109] In some embodiments, configuration information indicates two or more available parameter sets for random access, and base station 20 or other network nodes monitor random access channels in sub-bands configured according to the two or more available parameter sets. In one embodiment, the configuration information indicates an available parameter set for random access that is the same as or substantially similar to a parameter set used by base station 20 or other network nodes to receive data transmissions on a UL traffic channel. In this embodiment, method 600 further includes receiving a preamble transmitted by wireless device 30 using processing hardware adapted to receive data transmissions from wireless device 30 on a UL traffic channel.

[0110] Figure 13 An exemplary random access method 630 according to another embodiment implemented by a base station 20 or other network node in a wireless communication network 10 supporting mixed parameter sets for different service types is illustrated. The base station 20 or other network node transmits an SI to a wireless device 30 in an area served by the base station 20 or other network node (box 640). The SI contains configuration information for random access, which enables the wireless device 30 in the service area of ​​the base station 20 to determine a first parameter set for random access. The base station 20 or other network node monitors a random access channel configured according to the first parameter set (box 650). Method 630 further includes the base station 20 or other network node receiving a random access preamble from the wireless device 30 on a first sub-band configured according to the first parameter set (box 660). The base station 20 or other network node then receives a UL transmission from the wireless device 30 on a shared UL channel in a second sub-band configured according to a second parameter set different from the first parameter set (box 670). In one embodiment, the first and second sub-bands may respectively include carrier or frequency resources for random access and the shared UL channel.

[0111] Figure 14An exemplary random access method 700 according to another embodiment implemented by a base station 20 or other network node in a wireless communication network 10 supporting mixed parameter sets for different service types is illustrated. The base station 20 or other network node transmits an SI to a wireless device 30 in an area served by the base station 20 or other network node (box 710). The SI contains configuration information including two or more available parameter sets for random access. The base station 20 or other network node monitors a random access channel in a sub-band configured according to the available parameter sets (box 720). The method further includes the base station 20 or other network node receiving a random access preamble from the wireless device in a sub-band configured according to one of the available parameter sets (box 730).

[0112] Figure 15 An exemplary random access method 750 according to another embodiment implemented by a base station 20 or other network node in a wireless communication network 10 supporting mixed parameter sets for different service types is illustrated. The base station 20 or other network node transmits an SI to a wireless device 30 in an area served by the base station 20 or other network node (box 760). The SI contains configuration information indicating the parameter set used for random access. The base station 20 or other network node monitors a random access channel configured according to the indicated parameter set (box 770). In some embodiments, the base station 20 then uses processing hardware adapted to receive data transmissions from the wireless device on a shared UL channel to receive a preamble transmitted on the random access channel (box 780).

[0113] Figure 16 The illustration shows the main functional components of a network node 800, such as a base station, configured for use in a hybrid parameter set wireless communication network 10. The network node 800 includes processing circuitry 810, interface circuitry 830, and memory 840.

[0114] Interface circuitry 830 is coupled to one or more antennas (not shown) and includes RF components necessary for communicating with wireless device 30 via a wireless communication channel. Typically, the RF components include transmitters and receivers adapted for communication according to the NR standard or other RATs.

[0115] Processing circuitry 810 processes signals transmitted to or received by network node 800. Such processing includes encoding and modulation of transmitted signals, and demodulation and decoding of received signals. Processing circuitry 810 includes an SI unit 815 for generating SI and other configuration information and transmitting it to wireless devices 30 within the service area of ​​base station 800, and a random access unit 820 for monitoring the random access channel and performing random access procedures. In some embodiments, processing circuitry 810 further includes a receive (RX) unit 825 for receiving transmissions from wireless devices in PRACH and / or USCH. Processing circuitry 810 may include one or more microprocessors, hardware, firmware, or combinations thereof. In one embodiment, SI unit 815, random access unit 820, and RX unit 825 are implemented by a single microprocessor. In other embodiments, SI unit 815 and random access unit 820 are implemented using different microprocessors.

[0116] Memory 840 includes both volatile and non-volatile memory for storing computer program code and data required for operation of processing circuitry 810. Memory 840 may include any tangible, non-transitory computer-readable storage medium for storing data, including electronic, magnetic, optical, electromagnetic, or semiconductor data storage. Memory 840 stores a computer program 850 including executable instructions that configure processing circuitry 810 to perform operations according to… Figures 12-15 The method generally involves storing computer program instructions and configuration information in non-volatile memory such as ROM, EPROM, or flash memory. Temporary data generated during operation may be stored in volatile memory such as RAM. In some embodiments, the computer program 850 for configuring the processing circuitry 810 as described herein may be stored in removable memory such as portable compact optical disc, portable digital video optical disc, or other removable media. The computer program (850) may also be implemented on a carrier such as electronic signals, optical signals, radio signals, or computer-readable storage media.

[0117] Figure 17An exemplary random access method 900 is illustrated by a base station 20 or other network node in a wireless communication network 10 that supports mixed parameter sets for different service types. The base station 20 or other network node transmits one or more synchronization signals to a wireless device 30 in an area served by the base station 20 or other network node (box 910). The synchronization signals implicitly indicate to the wireless device 30 in the service area of ​​the base station 20 one or more available parameter sets for random access. The base station 20 or other network node monitors random access channels in one or more sub-bands configured according to one or more available parameter sets (box 920). In some embodiments, configuration information indicates two or more available parameter sets for random access, and the base station 20 or other network node monitors random access channels in sub-bands configured according to two or more available parameter sets.

[0118] In one embodiment, the configuration information indicates an available set of parameters for random access, which is the same as or substantially similar to the set of parameters used by base station 20 or other network nodes to receive data transmissions on the UL traffic channel. In this embodiment, method 900 further includes receiving a preamble transmitted by wireless device 30 using processing hardware adapted to receive data transmissions from wireless device 30 on the UL traffic channel.

[0119] Figure 18 The illustration shows the main functional components of a network node 1000, such as base station 20, configured for use in a hybrid parameter set wireless communication network 10. The network node 1000 includes processing circuitry 1010, interface circuitry 1030, and memory 1040.

[0120] The interface circuit 1030 is coupled to one or more antennas (not shown) and includes RF components necessary for communicating with the wireless device 30 via a wireless communication channel. Typically, the RF components include transmitters and receivers adapted for communication according to the NR standard or other RATs.

[0121] Processing circuitry 1010 processes signals transmitted to or received by network node 1000. Such processing includes encoding and modulation of transmitted signals, and demodulation and decoding of received signals. Processing circuitry 1010 includes a synchronization unit 1015 for generating synchronization signals and transmitting them to wireless devices 30 within the service area of ​​base station 1000, and a random access unit 1020 for monitoring the random access channel and performing random access procedures. In some embodiments, processing circuitry 1010 further includes a receive (RX) unit 1025 for receiving transmissions from wireless devices in PRACH and / or USCH. Processing circuitry 1010 may include one or more microprocessors, hardware, firmware, or combinations thereof. In one embodiment, synchronization unit 1015, random access unit 1020, and RX unit 1025 are implemented using a single microprocessor. In other embodiments, synchronization unit 1015 and random access unit 1020 are implemented using different microprocessors.

[0122] Memory 1040 includes both volatile and non-volatile memory for storing computer program code and data required for operation of processing circuitry 1010. Memory 1040 may include any tangible, non-transitory computer-readable storage medium for storing data, including electronic, magnetic, optical, electromagnetic, or semiconductor data storage. Memory 1040 stores a computer program 1050 including executable instructions that configure processing circuitry 1010 to perform operations according to… Figure 17 Method 900. Generally, computer program instructions and configuration information are stored in non-volatile memory such as ROM, EPROM, or flash memory. Temporary data generated during operation may be stored in volatile memory such as RAM. In some embodiments, a computer program 1050 for configuring the processing circuitry 1010 as described herein may be stored in removable memory such as portable compact optical disc, portable digital video optical disc, or other removable media. The computer program (1050) may also be implemented on a carrier such as electronic signals, optical signals, radio signals, or computer-readable storage media.

[0123] Figure 19 The diagram illustrates the configuration to perform as described in this article. Figures 4-8Another embodiment of the method is described in the wireless device 1100. The wireless device 1110 includes a system information module 1110, a configuration module 1120, and a random access module 1130. The system information module 1110 is configured to receive and process SI and other configuration information transmitted by a base station or other network node. The SI may include configuration information indicating a configuration for random access and / or configuration information indicating one or more available parameter sets. The configuration module 1120 is adapted to determine a sub-band and configure a random access procedure for the wireless device 1100 based on the configuration information, as described herein. The random access module 1120 is configured to determine the sub-band / parameter set for random access and perform the random access procedure, as described herein. Some embodiments may further include a transmission (TX) module 1130 for transmitting data. As an example, the TX module 1130 may be configured to transmit data on a PRACH and / or UL shared channel. The various modules 1110, 1120, and 1130 can be implemented by hardware and / or software code executed by a processor or processing circuitry.

[0124] Figure 20 The diagram illustrates the configuration to perform as described in this article. Figure 10 Another embodiment of the method is described in the wireless device 1150. The wireless device 1150 includes a synchronization module 1160 and a random access module 1170. The synchronization module 1160 is configured to receive and process synchronization signals transmitted by a base station or network node. The random access module 1170 is configured to determine a sub-band / parameter set for random access and perform a random access procedure as described herein. Some embodiments may further include a transmission (TX) module 1180 for transmitting data. As an example, the TX module 1180 may be configured to transmit data on a PRACH and / or UL shared channel. The various modules 1160, 1170, and 1180 can be implemented by hardware and / or software code executed by a processor or processing circuitry.

[0125] Figure 21 The diagram illustrates the configuration to perform as described in this article. Figures 12-15Another embodiment of the method includes a network node (e.g., a base station) 1200. Network node 1200 includes a System Information (SI) module 1210 and a Random Access module 1220. System Information (SI) module 1210 is configured to generate SI and other configuration information, and to transmit the SI and other configuration information to wireless devices in the area served by network node 1200. Random Access module 1220 is configured to monitor a random access channel and perform a random access procedure. In some embodiments, network node 1200 further includes a Receive (RX) module 1230 for receiving transmissions from wireless devices in PRACH and / or USCH. The various modules 1210, 1220, and 1230 can be implemented by hardware and / or software code executed by a processor or processing circuitry.

[0126] Figure 22 The diagram illustrates the execution as described in this article. Figure 17 Another embodiment of the method includes a network node (e.g., a base station) 1250. Network node 1250 includes a synchronization module 1260 and a random access module 1270. Synchronization module 1260 is configured to generate a synchronization signal and transmit the synchronization signal to wireless devices in the area served by network node 1250. Random access module 1270 is configured to monitor a random access channel and perform a random access procedure. In some embodiments, network node 1250 further includes a receive (RX) module 1280 for receiving transmissions from wireless devices in PRACH and / or USCH. The various modules 1260, 1270, and 1280 can be implemented by hardware and / or software code executed by a processor or processing circuitry.

Claims

1. A random access method implemented by a wireless device in a hybrid parameter set wireless communication network, the method comprising: Receive system information from a network node, the system information containing a System Information Block (SIB) indicating a configuration for random access; Select a carrier for random access configured according to a parameter set, which is determined from two or more parameter sets available for random access indicated by the SIB; as well as Random access is performed on the selected carrier to establish a connection with the network node.

2. The method of claim 1, wherein the SIB includes a default configuration for random access.

3. The method of claim 1, wherein determining the parameter set for random access based on the SIB comprises: Based on the SIB, a mapping is generated that associates service types with corresponding parameter sets; Determine the service type used for the connection with the network node; as well as The parameter set is determined based on the service type.

4. The method of claim 1, wherein determining the parameter set from the two or more parameter sets indicated by the SIB that are available for random access comprises: Determine the service type used for the connection with the network node; as well as The parameter set is determined from the available parameter set based on the service type.

5. A method implemented by network nodes in a hybrid parameter set wireless communication network, the method comprising: System information is transmitted to wireless devices in an area served by the network node. The system information contains a System Information Block (SIB) for Random Access, which enables the wireless device to determine a set of parameters for random access. The SIB indicates two or more sets of parameters that can be used for random access. Monitor random access channels on one or more carriers configured according to the available two or more sets of parameters; as well as On one or more carriers configured according to the parameter set, a random access preamble is received from the wireless device.

6. A wireless device configured for use in a hybrid parameter set wireless communication network, the wireless device comprising: Interface circuitry used for communication with network nodes; Processing circuit, the processing circuit being configured to: Receive system information from a network node, the system information containing a System Information Block (SIB) indicating a configuration for random access; Select a carrier for random access configured according to a parameter set, which is determined from two or more parameter sets available for random access indicated by the SIB; as well as Random access is performed on the selected carrier to establish a connection with the network node.

7. The wireless device of claim 6, wherein the SIB includes a default configuration for random access.

8. The wireless device of claim 6, wherein the processing circuitry is further configured to: Based on the SIB, a mapping is generated that associates service types with corresponding parameter sets; Determine the service type used for the connection with the network node; and The parameter set is determined based on the service type.

9. The wireless device of claim 6, wherein the processing circuitry is further configured to: Determine the service type used for the connection with the network node; and The parameter set is determined from the available parameter set based on the service type.

10. The wireless device of claim 6, wherein the processing circuitry is further configured to: Determine the device type of the wireless device; and The parameter set is determined from the available parameter set based on the device type.

11. A network node in a hybrid parameter set wireless communication network, the network node comprising: Interface circuitry for communicating with wireless devices in the area served by the network node; Processing circuit, the processing circuit being configured to: System information is transmitted to wireless devices in an area served by the network node. The system information contains a System Information Block (SIB) for Random Access, which enables the wireless device to determine a set of parameters for random access. The SIB indicates two or more sets of parameters that can be used for random access. Monitor random access channels on one or more carriers configured according to the available two or more sets of parameters; as well as On one or more carriers configured according to the parameter set, a random access preamble is received from the wireless device.

12. A non-transitory computer-readable storage medium containing a computer program, the computer program including executable instructions that, when executed by processing circuitry in a wireless device, cause the wireless device to: Receive system information from a network node in a wireless communication network, the system information containing a System Information Block (SIB) indicating a configuration for random access; Select a carrier for random access configured according to a parameter set, which is determined from two or more parameter sets available for random access indicated by the SIB; as well as Random access is performed on the selected carrier to establish a connection with the network node.

13. A non-transitory computer-readable storage medium containing a computer program, the computer program including executable instructions that, when executed by processing circuitry in a network node, cause the network node to: System information is transmitted to wireless devices in an area served by the network node. The system information contains a System Information Block (SIB) for Random Access, which enables the wireless device to determine a set of parameters for random access. The SIB indicates two or more sets of parameters that can be used for random access. Monitor random access channels on one or more carriers configured according to the available two or more sets of parameters; as well as On one or more carriers configured according to the parameter set, a random access preamble is received from the wireless device.

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