Prach adaptation for NES enhancement
By configuring PRACH resources with muting patterns and utilizing signaling mechanisms, the patent addresses the lack of adaptation methods for NES in 5G NR networks, achieving energy savings and efficient communication.
Patent Information
- Application Number
- PCT/CN2024/110705
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-08-08
- Publication Date
- 2026-02-12
AI Technical Summary
There is no established method for adapting Physical Random Access Channel (PRACH) resources in network energy saving (NES) operations to achieve efficient energy savings in 5G New Radio (NR) networks.
Configuring PRACH resources with muting patterns and utilizing signaling mechanisms such as System Information Block (SIB), paging messages, and Medium Access Control (MAC) signaling to adapt PRACH resources for NES mode, allowing UEs to determine and adjust PRACH availability based on muting patterns.
Enhances network energy savings by optimizing PRACH resource usage, reducing signaling and power consumption while maintaining effective communication.
Smart Images

Figure CN2024110705_12022026_PF_FP_ABST
Abstract
Description
PRACH Adaptation for NES EnhancementBACKGROUND
[0001] Network energy saving (NES) is a mode of operation for New Radio (NR) which reduces signaling and power draw at a base station of the network. NES typically involves a base station muting certain transmissions such as reference signals (RSs) . In one example of a RS, a Synchronization Signal Block (SSB) is an RS transmitted by a base station and used by a user equipment (UE) for time and frequency synchronization with the cell and may also be used for activation of a cell by the UE.
[0002] In NES operation, additional Physical Random Access Channel (PRACH) resources may be defined for NES-capable user equipment (UE) in addition to PRACH resources for legacy UEs. These additional PRACH resources may have to be adapted during operation to achieve network energy saving. However, there is no agreement as to how this adaptation may be performed.SUMMARY
[0003] Some example embodiments are related to an apparatus having processing circuitry configured to process, based on signals received from a base station, a Physical Random Access Channel (PRACH) configuration for a network energy saving (NES) mode comprising PRACH resources, wherein the PRACH configuration is received in a System Information Block (SIB) and determine whether the PRACH configuration comprises a muting pattern for the PRACH resources.
[0004] Other example embodiments are related to a method for processing, based on signals received from a base station, a Physical Random Access Channel (PRACH) configuration for a network energy saving (NES) mode comprising PRACH resources, wherein the PRACH configuration is received in a System Information Block (SIB) and determining whether the PRACH configuration comprises a muting pattern for the PRACH resources.Brief Description of the Drawings
[0005] Fig. 1 shows an example network arrangement according to various example embodiments.
[0006] Fig. 2 shows an example user equipment (UE) according to various example embodiments.
[0007] Fig. 3 shows an example base station according to various example embodiments.
[0008] Fig. 4 shows a current configuration of a Paging Short Message according to various example embodiments.
[0009] Fig. 5 shows a current configuration of a Short Message Indicator field of the paging DCI according to various example embodiments.
[0010] Fig. 6 shows an example method related to NES PRACH resources according to various example embodiments.Detailed Description
[0011] The example embodiments may be further understood with reference to the following description and the related appended drawings, wherein like elements are provided with the same reference numerals. The example embodiments relate to configuring a UE with PRACH resources in NES mode and adapting the PRACH resources using muting patterns.
[0012] The example embodiments are described with regard to a UE.However, reference to a UE is merely provided for illustrative purposes. The example embodiments may be utilized with any electronic component that may establish a connection to an accessory device and is configured with the hardware, software, and / or firmware to exchange information and data with accessory devices. Therefore, the UE as described herein is used to represent any electronic component.
[0013] The example embodiments are also described with reference to a 5G New Radio (NR) network. However, the example embodiments may also be implemented in other types of networks, including but not limited to LTE networks, future evolutions of the cellular protocol (e.g., 5G-advanced networks, 6G networks, etc. ) , or any other type of network.
[0014] Throughout this description, the PRACH resources may be referred to as “additional PRACH resources. ” These additional PRACH resources refer to PRACH resources that are configured for NES operation and are distinguished from legacy PRACH resources. However, the term PRACH resources may also refer to the additional PRACH resources that are configured for NES operation.
[0015] The example embodiments provide operations for configuring a UE with PRACH resources for NES operations and providing the UE with a configuration for PRACH resource adaptation during NES operation. The PRACH resource adaptation may include one or more muting patterns to mute some of the configured PRACH resources. The example embodiments also provide signaling information to signal the UE the PRACH resources, the muting patterns for adaptation and other operations such as activating and deactivating either the PRACH resources or the muting patterns. Each of these example embodiments will be described in greater detail below.
[0016] Fig. 1 shows an example network arrangement 100 according to various example embodiments. The example network arrangement 100 includes a UE 110. The UE 110 may be any type of electronic component that is configured to communicate via a network, e.g., mobile phones, tablet computers, desktop computers, smartphones, embedded devices, wearables, Internet of Things (IoT) devices, etc. An actual network arrangement may include any number of UEs being used by any number of users. Thus, the example of one UE 110 is merely provided for illustrative purposes.
[0017] The UE 110 may be configured to communicate with one or more networks. In the example of the network arrangement 100, the network with which the UE 110 may wirelessly communicate is a 5G NR radio access network (RAN) 120. The UE 110 may also communicate with other types of networks (e.g., 5G cloud RAN, a next generation RAN (NG-RAN) , a legacy cellular network, etc. ) and the UE 110 may also communicate with networks over a wired connection. With regard to the example embodiments, the UE 110 may establish a connection with the 5G NR RAN 120. Therefore, the UE 110 may have a 5G NR chipset to communicate with the NR RAN 120.
[0018] The 5G NR RAN 120 may be portions of a cellular network that may be deployed by a network carrier (e.g., Verizon, AT&T, T-Mobile, etc. ) . The RAN 120 may include cells or base stations that are configured to send and receive traffic from UEs that are equipped with the appropriate cellular chip set. In this example, the 5G NR RAN 120 includes the gNB 120A and the gNB 120B. However, reference to a gNB is merely provided for illustrative purposes, any appropriate base station or cell may be deployed (e.g., Node Bs, eNodeBs, HeNBs, eNBs, gNBs, gNodeBs, macrocells, microcells, small cells, femtocells, etc. ) .
[0019] Any association procedure may be performed for the UE 110 to connect to the 5G NR RAN 120. For example, as discussed above, the 5G NR RAN 120 may be associated with a particular network carrier where the UE 110 and / or the user thereof has a contract and credential information (e.g., stored on a SIM card) . Upon detecting the presence of the 5G NR RAN 120, the UE 110 may transmit the corresponding credential information to associate with the 5G NR RAN 120. More specifically, the UE 110 may associate with a specific cell (e.g., gNB 120A) . In the example of Fig. 1, the gNB 120A may represent any of a PCell, an activated SCell, an SCell to be activated or a deactivated SCell as will be described in greater detail below.
[0020] The network arrangement 100 also includes a cellular core network 130, the Internet 140, an IP Multimedia Subsystem (IMS) 150, and a network services backbone 160. The cellular core network 130 manages the traffic that flows between the cellular network and the Internet 140. The IMS 150 may be generally described as an architecture for delivering multimedia services to the UE 110 using the IP protocol. The IMS 150 may communicate with the cellular core network 130 and the Internet 140 to provide the multimedia services to the UE 110. The network services backbone 160 is in communication either directly or indirectly with the Internet 140 and the cellular core network 130. The network services backbone 160 may be generally described as a set of components (e.g., servers, network storage arrangements, etc. ) that implement a suite of services that may be used to extend the functionalities of the UE 110 in communication with the various networks.
[0021] Fig. 2 shows an example UE 110 according to various example embodiments. The UE 110 will be described with regard to the network arrangement 100 of Fig. 1. The UE 110 may represent any electronic device and may include a processor 205, a memory arrangement 210, a display device 215, an input / output (I / O) device 220, a transceiver 225, and other components 230. The other components 230 may include, for example, an audio input device, an audio output device, a battery that provides a limited power supply, a data acquisition device, ports to electrically connect the UE 110 to other electronic devices, sensors to detect conditions of the UE 110, etc.
[0022] The processor 205 may be configured to execute a plurality of engines for the UE 110. For example, the engines may include an NES PRACH engine 235 for performing operations related to RACH procedures in NES mode. The operations include, but are not limited to, receiving a PRACH configuration including PRACH resources, receiving an adaptation configuration comprising one or more muting patterns for the PRACH resources and receiving activation or deactivation information for the PRACH resources or muting patterns. Each of these example operations will be described in more detail below.
[0023] The above referenced engine being an application (e.g., a program) executed by the processor 205 is only example. The functionality associated with the engines may also be represented as a separate incorporated component of the UE 110 or may be a modular component coupled to the UE 110, e.g., an integrated circuit with or without firmware. For example, the integrated circuit may include input circuitry to receive signals and processing circuitry to process the signals and other information. The engines may also be embodied as one application or separate applications. In addition, in some UEs, the functionality described for the processor 205 is split among two or more processors such as a baseband processor and an applications processor. The example embodiments may be implemented in any of these or other configurations of a UE.
[0024] The memory arrangement 210 may be a hardware component configured to store data related to operations performed by the UE 110. The display device 215 may be a hardware component configured to show data to a user while the I / O device 220 may be a hardware component that enables the user to enter inputs. The display device 215 and the I / O device 220 may be separate components or integrated together such as a touchscreen.
[0025] The transceiver 225 may be a hardware component configured to establish a connection with the 5G NR-RAN 120, an LTE-RAN (not pictured) , a legacy RAN (not pictured) , a WLAN (not pictured) , etc. Accordingly, the transceiver 225 may operate on a variety of different frequencies or channels (e.g., set of consecutive frequencies) . The transceiver 225 includes circuitry configured to transmit and / or receive signals (e.g., control signals, data signals) . Such signals may be encoded with information implementing any one of the methods described herein. The processor 205 may be operably coupled to the transceiver 225 and configured to receive from and / or transmit signals to the transceiver 225. The processor 205 may be configured to encode and / or decode signals (e.g., signaling from a base station of a network) for implementing any one of the methods described herein.
[0026] Fig. 3 shows an example base station 300 according to various example embodiments. The base station 300 may represent the gNB 120A, the gNB 120B or any other access node through which the UE 110 may establish a connection and manage network operations. As described above, the base station 300 may represent any of a PCell, an activated SCell, an SCell to be activated or a deactivated SCell, e.g., the base station 300 may perform any of the operations described for these different cells throughout this description.
[0027] The base station 300 may include a processor 305, a memory arrangement 310, an input / output (I / O) device 315, a transceiver 320, and other components 325. The other components 325 may include, for example, an audio input device, an audio output device, a battery, a data acquisition device, ports to electrically connect the base station 300 to other electronic devices and / or power sources, etc.
[0028] The processor 305 may be configured to execute a plurality of engines for the UE 110. For example, the engines may include an NES PRACH configuration engine 330 for performing operations related to RACH procedures in NES mode. The operations include, but are not limited to, broadcasting a PRACH configuration including PRACH resources to the UE, signaling an adaptation configuration comprising one or more muting patterns for the PRACH resources in the broadcast or additional signaling and activating or deactivating the PRACH resources or muting patterns. Each of these example operations will be described in more detail below.
[0029] The memory arrangement 310 may be a hardware component configured to store data related to operations performed by the base station 300. The I / O device 315 may be a hardware component or ports that enable a user to interact with the base station 300. The transceiver 320 may be a hardware component configured to exchange data with the UE 110 and any other UE in the network arrangement 100.
[0030] The transceiver 320 may be a hardware component configured to exchange data with the UE 110 and any other UE in the network arrangement 100. The transceiver 320 may operate on a variety of different frequencies or channels (e.g., set of consecutive frequencies) . The transceiver 320 includes circuitry configured to transmit and / or receive signals (e.g., control signals, data signals) . Such signals may be encoded with information implementing any one of the methods described herein. The processor 305 may be operably coupled to the transceiver 320 and configured to receive from and / or transmit signals to the transceiver 320. The processor 305 may be configured to encode and / or decode signals (e.g., signaling from a UE) for implementing any one of the methods described herein.
[0031] Prior to describing the example embodiments, there may be multiple cases or scenarios defined for the additional PRACH resources for NES. In a Case 1, there is no time domain overlap between the additional PRACH resources for NES and the legacy PRACH resources but there may be frequency domain overlap. In a Case 2, there may be time domain overlap between the additional PRACH resources for NES and the legacy PRACH resources but there is no frequency domain overlap. In a Case 3, there may be no time domain or frequency domain overlap between the additional PRACH resources for NES and the legacy PRACH resources. In a Case 4, there may be time domain or frequency domain overlap between the additional PRACH resources for NES and the legacy PRACH resources but the overlap may be a partial overlap or a full overlap. The example embodiments may be applied to any of these cases and where an example embodiment applies specifically to one of the cases will be highlighted in the description.
[0032] The network (e.g., gNB 120A) may configure the additional PRACH resources for Rel-19 NES-capable UEs in a system information block (SIB) that is broadcast by the base station. The additional PRACH resources may be a dense PRACH resource based on a PRACH configuration index and / or scaling parameters. Thus, to achieve network energy saving, the example embodiments provide adaptations to the additional PRACH resources. These adaptations may be related to muting patterns that are applied to the additional PRACH resources.
[0033] In some example embodiments, a single muting pattern for the additional PRACH resources may be configured in the SIB. This single muting pattern may be at the RACH occasion-level (RO-level) , the Synchronization Signal Block (SSB) -to-RO mapping cycle level, at an association period level or at an association pattern period level. The level at which the muting is applied may be part of the configuration provided by the network (e.g., using a bitmap or other indication) or the level may be defined by standards, e.g., 3GPP Technical Specifications.
[0034] In these example embodiments, there may be two (2) modes of operation. A first Mode 1 may be when the muting pattern is effective at configuration, e.g., the UE receives / processes the SIB including the muting pattern and determines the network is currently operating in accordance with the muting pattern. In this Mode 1, for UEs in a Radio Resource Control (RRC) Idle or RRC Inactive mode, the muting pattern provides the available PRACH resources, e.g., the muting pattern mutes some of the additional PRACH resources and based on the configuration, the UE may know which additional PRACH resources are muted and which are available. For UEs in the RRC Connected mode, on top of the muting pattern, additional signaling may be used to activate / deactivate additional resources for latency reduction. For example, in addition to receiving the muting pattern, a Connected UE may also receive additional signaling that identifies more resources that are available for the Connected UE to use. Similar to the muting pattern, the additional resources may also be at the RO-level / SSB-to-RO mapping cycle level / association period level / association pattern period level.
[0035] A second Mode 2 may be when the network indicates whether the muting pattern is currently active, e.g., the SIB may include the configuration for the muting pattern but may also include a further indication as to whether the muting pattern is active. If the network indicates the muting pattern is currently active, the operations described above for Mode 1 may also be applied for Mode 2 operation.
[0036] If the network indicates the muting pattern is not currently active, the UE may determine the PRACH resources configured in the SIB are in use, e.g., all the additional PRACH resources configured in the SIB are active. In a first option, the UE may monitor the SIB for a SIB update for the muting pattern to be activated / deactivated. In a second option that may be in addition to the SIB update, UEs in the Idle or Inactive mode may receive paging or paging early indication (PEI) signaling to indicate activation / deactivation of the muting pattern. A UE in a Connected mode may receive Medium Access Control Control Element (MAC-CE) or group common Layer 1 (L1) signaling to indicate activation / deactivation of the muting pattern. Once the muting pattern is activated, a Connected UE may also receive the additional signaling described above for Mode 1.
[0037] In other example embodiments, multiple muting pattern (s) for the additional PRACH resources may be configured in the SIB. In these example embodiments, a status indication may be used to indicate whether a muting pattern is active (e.g., similar to Mode 2 described above) and further indicates which of the multiple muting pattern (s) is active. In a first option, the network may indicate one active muting pattern in the SIB, and, if there is no indication, the muting pattern that has the lowest ID may be the default muting pattern. In a second option, the network may indicate one active muting pattern in the SIB, and, if there is no indication, all the additional PRACH resources configured in the SIB can be used, e.g., no muting pattern is currently active.
[0038] Similar to the examples described above for Mode 2, UEs in the Idle or Inactive states may also receive paging or PEI signaling to activate / deactivate a muting pattern and, for UEs in the Connected state, MAC-CE or L1 group common signaling may be used to activate / deactivate a muting pattern. If the current muting pattern is deactivated and no new patterns are activated, all the additional PRACH resources may be used.
[0039] In still further example embodiments, no muting patterns may be configured in the SIB. In these example embodiments, additional signaling may be used to achieve NES gains. In a first option, the additional signaling indicates activation / deactivation of the additional PRACH resources configured in SIB, e.g., the additional signaling indicates activation / deactivation of all the additional PRACH resources in the SIB. In a second option, the additional signaling may also indicate a muting pattern for the additional PRACH resources configured in the SIB and the additional signaling may indicate the activation / deactivation of the indicated muting pattern. The additional signaling may be paging or PEI signaling for UEs in the Idle or Inactive states and MAC CE or L1 group common signaling for UEs in the Connected state.
[0040] As described above, in various example embodiments, paging or PEI signaling may be used to signal the UE concerning muting patterns and / or activation or deactivation of muting patterns or all the additional PRACH resources. The following will describe various example signaling details related to the paging or PEI signaling that may be used for activating / deactivating a muting pattern or the additional PRACH resources for UEs in Idle or Inactive states.
[0041] Initially, additional signaling related to paging is described. In some example embodiments, the Paging Short Message may be modified for the additional signaling. Fig. 4 shows a current configuration of a Paging Short Message 400 according to various example embodiments. As shown in Fig. 4, there are reserved bits (bits 5-8) 410 in the Paging Short Message. The following options provide example manners of how the reserved bits may be used for the additional signaling.
[0042] In the example embodiments where the SIB indicates a single PRACH muting pattern, one (1) of the reserved bits 410 may be used to indicate activation / deactivation of the PRACH muting pattern.
[0043] In the example embodiments where the SIB indicates multiple muting patterns, one (1) of the reserved bits 410 may be used to indicate activation / deactivation of a PRACH muting pattern and 1-3 bits of the reserved bits 410 may be used to indicate a pattern index to identify the PRACH muting pattern that is to be activated / deactivated. In these example embodiments, the multiple muting patterns provided by the SIB may be indexed and the additional signaling may indicate which of the multiple muting patterns is to be activated / deactivated based on the index value of the additional signaling.
[0044] In the example embodiments where there is no muting pattern configured in the SIB, one (1) of the reserved bits 410 may be used to indicate activation / deactivation of the additional PRACH resources, e.g., all the additional PRACH resources configured in the SIB are activated / deactivated. In another option, one (1) of the reserved bits 410 may be used to indicate activation / deactivation of a PRACH muting pattern and 1-3 bits of the reserved bits 410 may be used to indicate a muting pattern that is to be activated / deactivated. This is similar to the above example embodiments, except that the muting patterns are not indicated in the SIB and therefore the repurposed reserved bits 410 identifies the muting pattern rather than an index of the muting patterns in the SIB.
[0045] In other example embodiments, the paging signaling used for the additional signaling may be paging Downlink Control Information (DCI) . For example, an existing field of the paging DCI may be reinterpreted to indicate the PRACH adaptation information. This reinterpretation of field (s) in the paging DCI may be similar to the repurposing of the reserved bits 410 in the Paging Short Message 400 described above. The existing fields in the paging DCI that may be repurposed include an FDRA field, a TDRA field, a VRB-PRB mapping field, an MCS field, a TB scaling field, a TRS availability indication field, etc. These existing fields may not include the Short Message Indicator field or the Short Message field of the paging DCI as the use of these fields are described in greater detail below.
[0046] A reserved bit in the Short Message Indicator field or the Short Message field of the paging DCI may be used to indicate that one of the other paging DCI fields is re-interpreted as described above.
[0047] Fig. 5 shows a current configuration of a Short Message Indicator field 500 of the paging DCI according to various example embodiments. As shown in Fig. 5, the Short Message Indicator field 500 has a reserved bit field 510 that may be used to signal the UE that one of the other paging DCI fields is re-interpreted. For example, if the reserved bit 510 in the Short Message Indicator field 510 is set to a predetermined value, this may indicate to the UE that another field of the paging DCI has been repurposed for additional signaling related to the additional PRACH resources. For example, when the Short Message Indicator field 510 is set to the predetermined value, this may indicate to the UE that the TDRA field of the paging DCI has been repurposed to provide an activation / deactivation indication of a muting pattern or the additional PRACH resources and / or an indication of a pattern index for the muting pattern configured in the SIB. This example used the Short Message Indicator field 510 of the paging DCI but, as described above, the Short Message field of the paging DCI may be used in a similar manner.
[0048] In still further example embodiments, the Paging Short Message and the Paging DCI may be used to also indicate the muting pattern in addition to activation / deactivation information, e.g., the example embodiments where the SIB does not include the muting pattern (s) . For example, a reserved bit of the Paging Short Message Indicator (e.g., field 510) or the Short Message field indicates the current paging is for PRACH adaptation, and whether this signaling is for activation or for deactivation. For activation, one or more of the existing fields of the paging DCI (other than the Short Message field) may be re-interpreted to configure the muting pattern. The information for the muting pattern may include: the muting pattern level (e.g., in RO / SSB-to-RO mapping cycle / PRACH association period / PRACH association pattern period level) ; an RO muting / mask indication (e.g., a bit map of ROs within an SSB-to-RO mapping cycle) ; an SSB-to-RO mapping cycle indication (e.g., a bit map of SSB-to-RO mapping cycles within an association period) ; an association period indication (e.g., a 16 bit bitmap when there is a maximum of 16 association periods in one association pattern period, or a reduced number based on an RRC configured value) ; a number of association pattern periods (e.g., a bit codepoint to indicate the number of association pattern periods for a muting cycle; an association pattern period indication (e.g., M bit bitmap, where M is a higher layer configured value or a value configured in the above field.
[0049] For deactivation, the muting pattern may be deactivated and all the additional PRACH resources configured in SIB may be used.
[0050] In additional example embodiments, DCI format 2_7 may be used for the additional signaling. For example, one or more of the following fields may be added in DCI format 2_7 for the additional signaling. For example, an activation / deactivation field having one (1) bit may be added to indicate activation / deactivation of the PRACH muting pattern. This may be used where only a single muting pattern is configured in the SIB or when only one (1) bit is used to indicate the activation / deactivation of the additional PRACH resources configured in the SIB. In another example, a muting pattern index field may be added to the DCI format 2_7. This muting pattern index field may have bits, where P is the number of muting patterns configured in the SIB. The activation / deactivation field and the muting pattern index field may be used independently or in combination to signal the UE any of the additional signaling described above.
[0051] As described above, the additional signaling for Connected state UEs may include MAC CE or L1 group common signaling. The following describes examples of the MAC CE or L1 group common additional signaling.
[0052] In the example embodiments where the SIB indicates a single PRACH muting pattern and the muting pattern is deactivated or in the example embodiments where the SIB indicates a multiple muting patterns, the additional signaling for Connected state UEs may activate / deactivate a muting pattern.
[0053] In the example embodiments where the SIB does not indicate a muting pattern, the additional signaling for Connected state UEs may activate / deactivate the additional PRACH resources configured in the SIB.
[0054] In the example embodiments where the SIB does not indicate a muting pattern, the additional signaling for Connected state UEs may provide a configuration of a muting pattern and activate the muting pattern of the additional PRACH resources configured in the SIB.
[0055] In these example embodiments of using the MAC-CE or the L1 group common signaling, similar fields as was described above for the additional signaling for the Idle and Inactive states may be used, except these fields are in the MAC-CE or the L1 group common signaling rather than the paging or the PEI signaling. For example, a new MAC-CE may be introduced that includes a field to activate one or more muting patterns, a field to activate the additional PRACH resources, a field to indicate a muting pattern index, a field to indicate a muting pattern, etc.
[0056] In another example, the above described fields may be added to a legacy DCI with a new Radio Network Temporary Identification (RNTI) (e.g., DCI format 1_0 with a new RNTI, DCI format 2_9 with a new RNTI, etc. ) or a new DCI format with System Information (SI) -RNTI, or a new RNTI.
[0057] In the example embodiments where the SIB indicates a single PRACH muting pattern and the muting pattern is activated, the additional signaling for Connected state UEs may activate / deactivate additional resources on top of the muting pattern. The additional resources may also be in the RO-level / SSB-to-RO mapping cycle level / association period level / association pattern period level in the same manner as the additional RACH resources.
[0058] The additional signaling using MAC-CE or the L1 group common signaling for UEs in the Connected state for activation / deactivation of the additional resources on top of the muting pattern, may include one or more of the following fields.
[0059] A first example field may be a resource level indication field that indicates whether the additional resources are in the RO, the SSB-to-RO mapping cycle, the PRACH association period or the PRACH association pattern period level. In some example embodiments, the muting pattern level may be fixed in standards and this field may be omitted. In other example embodiments, the level for the additional resources may be the same as the muting pattern level configured in the SIB. In further example embodiments, the level for the additional resources may be finer or the same granularity as the muting pattern level configured in the SIB, e.g., if the muting pattern configured in the SIB is in an association period level, the additional resources may be in the RO or SSB-to-RO mapping cycle or an association period level (e.g., finer or the same level as the muting pattern level) but should not be in the association pattern period level which is more granular than the association period level.
[0060] A second example field may be an RO muting / mask indication field that may be, for example, a bit map of ROs within an SSB-to-RO mapping cycle to indicate which ROs are additionally activated.
[0061] A second example field may be an SSB-to-RO mapping cycle indication field that may be, for example, a bit map of SSB-to-RO mapping cycles within an association period to indicate which SSB-to-RO mapping cycles are additionally activated.
[0062] A third example field may be an association period indication field that may be, for example, a maximum 16 bit bitmap to indicate which PRACH association periods are additionally activated.
[0063] A fourth example field may be an association pattern period indication that may be, for example, an M bit bitmap, where M is a higher layer configured value or a value configured by a number of association pattern period field that may be, for example, a bit codepoint to indicate the number of association pattern periods for a muting cycle.
[0064] In some example embodiments, the new field may be a combination of the above described fields. For example, if the SSB-to-RO mapping cycle indication field indicates 1001, and the association period indication field indicates 011, this means within the second and third association period, the first and fourth SSB-to-RO mapping cycles are activated PRACH resources. Other combinations of the fields may also be used.
[0065] Fig. 6 shows an example method 600 related to NES PRACH resources according to various example embodiments. The method 600 is described from the point of view of a UE.
[0066] In 605, the UE receives and processes the SIB having the PRACH configuration comprising the additional PRACH resources for NES operation. In 610, the UE determines whether the SIB also included one or more muting patterns for the PRACH resources. As described above, in some example embodiments, the SIB may include a single muting pattern. In other example embodiments, the SIB may include multiple muting patterns. In further example embodiments, the SIB may not include any muting patterns.
[0067] In 615, the UE determines if the muting pattern (s) included in the SIB are active based on information in the SIB. For example, in some example embodiments, the receipt of the SIB with a single muting pattern indicates to the UE that the muting pattern is active. In other example embodiments, the SIB may include a status indication indicating if one of the multiple muting patterns are active. If the muting patterns are active, in 630, the UE may determine that the non-muted additional PRACH resources are available for a PRACH procedure in NES mode.
[0068] If, in 610, the SIB does not have muting information or if, in 615, the muting is not active, in 620, UE determines if additional signaling is received. As described above, the additional signaling may provide the UE with muting information (e.g., muting patterns) , muting pattern activation / deactivation information, additional PRACH activation / deactivation information, etc.
[0069] If the additional signaling provided the UE with a muting pattern and / or activate a SIB configured (or additional signaling configured) muting pattern, in 630, the UE may determine that the non-muted additional PRACH resources are available for a PRACH procedure in NES mode.
[0070] If the additional signaling did not provide the UE with a muting pattern and / or did not activate a SIB configured (or additional signaling configured) muting pattern, or deactivated a SIB configured (or additional signaling configured) muting pattern, in 625, the UE may determine that all the additional PRACH resources are available for a PRACH procedure in NES mode.
[0071] Examples
[0072] In a first example, a method, comprising processing, based on signals received from a base station, a Physical Random Access Channel (PRACH) configuration for a network energy saving (NES) mode comprising PRACH resources, wherein the PRACH configuration is received in a System Information Block (SIB) and determining whether the PRACH configuration comprises a muting pattern for the PRACH resources.
[0073] In a second example, the method of the first example, wherein the PRACH configuration comprises a single muting pattern for the PRACH resources, wherein the single muting pattern is in a RACH occasion-level (RO-level) , a Synchronization Signal Block (SSB) -to-RO mapping cycle level, an association period level or an association pattern period level.
[0074] In a third example, the method of the second example, wherein the single muting pattern is activated upon processing the SIB.
[0075] In a fourth example, the method of the third example, further comprising processing additional signaling from the base station to activate or deactivate additional resources separate from the single muting pattern.
[0076] In a fifth example, the method of the fourth example, wherein the additional signaling comprises one or more of a resource level indication field, an RO muting / mask indication field, an SSB-to-RO mapping cycle indication field, an association period indication field, an association pattern period indication field, a number of association pattern period field or a combination thereof.
[0077] In a sixth example, the method of the second example, wherein the single muting pattern is activated based on an indication from the base station.
[0078] In a seventh example, the method of the sixth example, wherein the indication is included in a SIB update.
[0079] In an eighth example, the method of the sixth example, wherein the indication is included in additional signaling from the base station.
[0080] In a ninth example, the method of the eighth example, wherein, when in a Radio Resource Control (RRC) Idle state or an RRC Inactive state, the additional signaling comprises paging signaling or paging early indication (PEI) signaling.
[0081] In a tenth example, the method of the ninth example, wherein the paging signaling or PEI signaling comprises a paging message, a paging Downlink Control Information (DCI) message or a DCI format 2_7 message.
[0082] In an eleventh example, the method of the tenth example, wherein a one-bit indication of the paging message of the additional signaling indicates the single muting pattern is activated or deactivated.
[0083] In a twelfth example, the method of the tenth example, wherein a one-bit indication of the paging DCI message of the additional signaling indicates the single muting pattern is activated or deactivated, wherein the one-bit is included in a repurposed field of the paging DCI, wherein another field of the paging DCI indicates the repurposed field.
[0084] In a thirteenth example, the method of the eighth example, wherein, when in a Radio Resource Control (RRC) Connected state, the additional signaling comprises Medium Access Control Control Element (MAC-CE) or group common Layer 1 (L1) signaling.
[0085] In a fourteenth example, the method of the first example, wherein the PRACH configuration comprises multiple muting patterns for the PRACH resources, wherein the multiple muting patterns are in a RACH occasion-level (RO-level) , a Synchronization Signal Block (SSB) -to-RO mapping cycle level, an association period level or an association pattern period level.
[0086] In a fifteenth example, the method of the fourteenth example, wherein the PRACH configuration comprises an indication of one of the muting patterns that is active.
[0087] In a sixteenth example, the method of the fourteenth example, wherein, when the PRACH configuration does not include an indication of one of the muting patterns that is active, the method further comprising determining that one of the muting patterns having a lowest identification index is activated.
[0088] In a seventeenth example, the method of the fourteenth example, wherein, when the PRACH configuration does not include an indication of one of the muting patterns that is active, the method further comprising determining that none of the muting patterns are activated.
[0089] In an eighteenth example, the method of the fourteenth example, wherein, when in a Radio Resource Control (RRC) Idle state or an RRC Inactive state, the method further comprising processing additional signaling from the base station to activate or deactivate one or more of the multiple muting patterns, wherein the additional signaling comprises paging signaling or paging early indication (PEI) signaling.
[0090] In a nineteenth example, the method of the eighteenth example, wherein the paging signaling or PEI signaling comprises a paging message, a paging Downlink Control Information (DCI) message or a DCI format 2_7 message.
[0091] In a twentieth example, the method of the nineteenth example, wherein a one-bit indication of the paging message of the additional signaling indicates the one of the multiple muting patterns is activated or deactivated and additional bits of the paging message of the additional signaling indicate an identity of the one of the multiple muting patterns, wherein the identity is based on an index for each of the multiple muting patterns.
[0092] In a twenty first example, the method of the nineteenth example, wherein a one-bit indication of the paging DCI message of the additional signaling indicates the one of the multiple muting patterns is activated or deactivated, wherein the one-bit is included in a repurposed field of the paging DCI, wherein another field of the paging DCI indicates the repurposed field.
[0093] In a twenty second example, the method of the fourteenth example, wherein, when in a Radio Resource Control (RRC) Connected state, the method further comprising processing additional signaling from the base station to activate or deactivate one or more of the multiple muting patterns, wherein the additional signaling comprises Medium Access Control Control Element (MAC-CE) or group common Layer 1 (L1) signaling.
[0094] In a twenty third example, the method of the twenty second example, wherein a one-bit indication of a paging message of the additional signaling indicates the one of the multiple muting patterns is activated or deactivated and additional bits of the paging message of the additional signaling indicate an identity of the one of the multiple muting patterns, wherein the identity is based on an index for each of the multiple muting patterns.
[0095] In a twenty fourth example, the method of the first example, further comprising processing, based on signaling received from the base station, additional signaling indicating the PRACH resources are activated or deactivated.
[0096] In a twenty fifth example, the method of the twenty fourth example, wherein the paging signaling or PEI signaling comprises a paging message, a paging Downlink Control Information (DCI) message or a DCI format 2_7 message.
[0097] In a twenty sixth example, the method of the twenty fifth example, wherein the additional signaling comprises the paging message having a one-bit indication that indicates the PRACH resources are activated or deactivated.
[0098] In a twenty seventh example, the method of the twenty fifth example, wherein a one-bit indication of the paging DCI message of the additional signaling indicates the PRACH resources are activated or deactivated, wherein the one-bit is included in a repurposed field of the paging DCI, wherein another field of the paging DCI indicates the repurposed field.
[0099] In a twenty eighth example, the method of the first example, further comprising processing, based on signaling received from the base station, additional signaling indicating one or more muting patterns for the PRACH resources.
[0100] In a twenty ninth example, the method of the twenty eighth example, wherein the additional signaling comprises a paging message having one or more bits that indicate the muting pattern.
[0101] In a thirtieth example, the method of the twenty ninth example, wherein the paging message further comprises an additional one-bit indication that indicates one of the one or more muting patterns is activated or deactivated.
[0102] In a thirty first example, the method of the twenty eighth example, wherein the additional signaling comprises a Paging Short Message Indicator or a paging Short Message field that indicates the a current paging is for PRACH adaptation.
[0103] In a thirty second example, the method of the thirty first example, wherein a paging Downlink Control Information (DCI) message related to the PRACH adaptation comprises one or more of a muting pattern level field, a RO muting / mask indication field, an SSB-to-RO mapping cycle indication field, an association period indication field, a number of association pattern period field or an association pattern period indication field.
[0104] In a thirty third example, a processor configured to perform any or the first through thirty second examples.
[0105] In a thirty fourth example, a user equipment (UE) configured to perform any or the first through thirty second examples.
[0106] Those skilled in the art will understand that the above-described example embodiments may be implemented in any suitable software or hardware configuration or combination thereof. An example hardware platform for implementing the example embodiments may include, for example, an Intel x86 based platform with compatible operating system, a Windows OS, a Mac platform and MAC OS, a mobile device having an operating system such as iOS, Android, etc. The example embodiments of the above described method may be embodied as a program containing lines of code stored on a non-transitory computer readable storage medium that, when compiled, may be executed on a processor or microprocessor.
[0107] Although this application described various embodiments each having different features in various combinations, those skilled in the art will understand that any of the features of one embodiment may be combined with the features of the other embodiments in any manner not specifically disclaimed or which is not functionally or logically inconsistent with the operation of the device or the stated functions of the disclosed embodiments.
[0108] It is well understood that the use of personally identifiable information should follow privacy policies and practices that are generally recognized as meeting or exceeding industry or governmental requirements for maintaining the privacy of users. In particular, personally identifiable information data should be managed and handled so as to minimize risks of unintentional or unauthorized access or use, and the nature of authorized use should be clearly indicated to users.
[0109] It will be apparent to those skilled in the art that various modifications may be made in the present disclosure, without departing from the spirit or the scope of the disclosure. Thus, it is intended that the present disclosure cover modifications and variations of this disclosure provided they come within the scope of the appended claims and their equivalent.
Claims
1.An apparatus comprising processing circuitry configured to:process, based on signals received from a base station, a Physical Random Access Channel (PRACH) configuration for a network energy saving (NES) mode comprising PRACH resources, wherein the PRACH configuration is received in a System Information Block (SIB) ; anddetermine whether the PRACH configuration comprises a muting pattern for the PRACH resources.2.The apparatus of claim 1, wherein the PRACH configuration comprises a single muting pattern for the PRACH resources, wherein the single muting pattern is in a RACH occasion-level (RO-level) , a Synchronization Signal Block (SSB) -to-RO mapping cycle level, an association period level or an association pattern period level.3.The apparatus of claim 2, wherein the single muting pattern is activated upon processing the SIB.4.The apparatus of claim 3, wherein the processing circuitry is further configured to:process additional signaling from the base station to activate or deactivate additional resources separate from the single muting pattern.5.The apparatus of claim 4, wherein the additional signaling comprises one or more of a resource level indication field, an RO muting / mask indication field, an SSB-to-RO mapping cycle indication field, an association period indication field, an association pattern period indication field, a number of association pattern period field or a combination thereof.6.The apparatus of claim 2, wherein the single muting pattern is activated based on an indication from the base station, wherein the indication is included in a SIB update or in additional signaling from the base station.7.The apparatus of claim 6, wherein, when in a Radio Resource Control (RRC) Idle state or an RRC Inactive state, the additional signaling comprises paging signaling or paging early indication (PEI) signaling.8.The apparatus of claim 6, wherein, when in a Radio Resource Control (RRC) Connected state, the additional signaling comprises Medium Access Control Control Element (MAC-CE) or group common Layer 1 (L1) signaling.9.The apparatus of claim 1, wherein the PRACH configuration comprises multiple muting patterns for the PRACH resources, wherein the multiple muting patterns are in a RACH occasion-level (RO-level) , a Synchronization S ignal Block (SSB) -to-RO mapping cycle level, an association period level or an association pattern period level.10.The apparatus of claim 9, wherein the PRACH configuration comprises an indication of one of the muting patterns that is active.11.The apparatus of claim 9, wherein, when the PRACH configuration does not include an indication of one of the muting patterns that is active, the processing circuitry is further configured to:determine that one of the muting patterns having a lowest identification index is activated.12.The apparatus of claim 9, wherein, when the PRACH configuration does not include an indication of one of the muting patterns that is active, the processing circuitry is further configured to:determine that none of the muting patterns are activated.13.The apparatus of claim 9, wherein, when in a Radio Resource Control (RRC) Connected state, the processing circuitry is further configured to:process additional signaling from the base station to activate or deactivate one or more of the multiple muting patterns, wherein the additional signaling comprises Medium Access Control Control Element (MAC-CE) or group common Layer 1 (L1) signaling.14.The apparatus of claim 1, wherein processing circuitry is further configured to:process, based on signaling received from the base station, additional signaling indicating the PRACH resources are activated or deactivated.15.The apparatus of claim 14, wherein the paging signaling or PEI signaling comprises a paging message, a paging Downlink Control Information (DCI) message or a DCI format 2_7 message.16.The apparatus of claim 1, wherein processing circuitry is further configured to:process, based on signaling received from the base station, additional signaling indicating one or more muting patterns for the PRACH resources.17.The apparatus of claim 16, wherein the additional signaling comprises a paging message having one or more bits that indicate the muting pattern.18.The apparatus of claim 17, wherein the paging message further comprises an additional one-bit indication that indicates one of the one or more muting patterns is activated or deactivated.19.The apparatus of claim 17, wherein the additional signaling comprises a Paging Short Message Indicator or a paging Short Message field that indicates the a current paging is for PRACH adaptation.20.The apparatus of claim 19, wherein a paging Downlink Control Information (DCI) message related to the PRACH adaptation comprises one or more of a muting pattern level field, a RO muting / mask indication field, an SSB-to-RO mapping cycle indication field, an association period indication field, a number of association pattern period field or an association pattern period indication field.
Citation Information
Patent Citations
Signalling a muting pattern to a user equipment for time domain enhanced inter-cell interference coordination
CN103460776A
Communication method, user equipment, base station and storage medium
US20240040628A1
Method and apparatus for prach resource and tracking reference signal adaptation in wireless communication
WO2024035916A1