5G Deployment Option-7/7a/7x

-
Home               LTE              NB-IoT          5G(NR-NSA)

 Hi Guys today we are learning about 5G deployment options, if you want to know more about other 5G deployment option please click here


Option 7:


Deployment Option 7 represents a deployment scenario in which the Next Generation Core (NGC) will be used with a mixture of LTE and NR radio. 

Next Generation signaling will be used but it will be routed via the LTE RAN because the LTE network is more fully built out and thus more reliable for handling signaling. 

Options 7 and 7a differ on whether the user plane data is sent to NR directly or via the LTE RAN.




7/7A/7X require an eLTE upgrade of the existing LTE network at the start.
(Difference is UP path Non Standalone ( Dual Connectivity 4G/5G )


Option 7/7A: NSA NR in 5GS. This option is particularly attractive for areas in which legacy LTE eNBs and the EPCs are ready to be upgraded to ngeNBs and the 5GCs. 

From the point of view of the gNB, this is NSA because it requires an ng-eNB as an anchor for CP connectivity to 5GC. The NR UP connection to the 5GC goes through the ng-eNB which is connected to the 5GC (Option 7) or directly (Option 7A).



In Option 7/7a/7x, to achieve Dual Connectivity, the LTE eNB can be connected to the NGC with Non-standalone NR. 

The NR user plane connection to the NGC goes through the eLTE eNB (Option 7) or directly (Option 7a). The procedures and protocols for the Xn interface between eLTE eNB and gNB should also be newly designed.



The reference for defining the new Xn based procedures can be taken from the procedures defined under section 10.1.2.8 (Dual Connectivity operation) in TS 36.300. 

 In these procedures, the eLTE eNB and gNB are connected via Xn which are considered to have the role similar to MeNB and SeNB, respectively. 

 The new QoS model of NR defined in section 11 will be applied for the new Xn based procedures.



Comments

  1. Anonymous12 October 2022 at 10:25

    https://shhenjachij-patruls.ru/

    ReplyDelete
  2. Anonymous22 October 2022 at 01:58

    https://ladyby.ru/taro-zhaleet-li-on-o-razryve-otnoshenij/

    ReplyDelete
  3. Anonymous11 November 2022 at 02:44

    Надежный по программированию сайтов-визиток и обрезки ссылок – только Лиопал! Большой ассортимент услуг даст возможность каждому клиенту Liopal.com взять следующий уровень в сфере разработки мини-сайтов. Основная часть функционирования портала Liopal доступна абсолютно даром.

    ReplyDelete
  4. Anonymous13 November 2022 at 17:36

    Современные функции на платформе Лиопал http://l50763ns.bget.ru/index.php?subaction=userinfo&user=ozutula

    ReplyDelete
  5. goinspect14 November 2022 at 01:52

    Share great information about your blog , Blog really helpful for us
    . New Build Handover Inspections Brisbane

    ReplyDelete
  6. Anonymous2 December 2022 at 16:58

    Высококачественный ламинат фанера дуб бывает "под дерево", в виде натурального камня или кафельной плитки. Особенностью ламинированной пленки есть не только высокое противостояние влаге, но и присутствие особой цветовой гаммы. Неоднократно попадается ламинированная плоскость фанеры уникальной, необычной фактуры и иллюстрации.

    ReplyDelete

Post a Comment

Popular posts from this blog

5G Deployment Option-3/3a/3x

-
Image
Home                 LTE                NB-IoT            5G(NR-NSA)   Hi Guys today we are learning about 5G deployment options, if you want to know more about other 5G deployment option please  click here Option 3: EN-DC (EUTRA-NR Dual Connectivity) Option 3 represents a network having both LTE and NR radio access, but using only the EPC core of LTE to route the Control signals. In this option, LTE is used as the control plane anchor for NR, and both LTE and NR are used for user data traffic.(user plane). It could also be called as Non-Standalone (NSA) NR in Evolved Packet System. The only difference between Options 3 and 3A is based on whether the user plane data is sent to NR directly or via the LTE RAN. This standardization was concluded in 3GPP Rel-15. This is a possible first step in the migration towards 5G-SA. This option will be most attractive for operators which have early deployments of 5G NR access systems in areas where legacy eNB and EPC a
Read more

DRX (Discontinuous Reception)

-
Image
Home                 LTE                NB-IoT            5G(NR-NSA)   What is DRX and DRX active period? What channels does it monitor in active period? Data transmission between UE and their base stations(eNodeB) uses radio frames with10ms duration, where in each radio frame consists of 10 1ms( 1 frame=10ms duration=10 subframe) subframes. Physical Downlink Control Channel (PDCCH) at the beginning of each subframe indicates whether there is data for UE to receive or not. Devices has to monitor these PDCCHs in each subframe so that it can find out whether they carry any data to receive. Because devices do not receive data in every subframe, this monitoring process naturally leads to high battery consumption.  What is the purpose of DRX? The main purpose of DRX is to lower battery consumption when there is no UL/DL data. means, when there is no traffic(DL/UL) that time devices enter into sleep mode (with RF module turned off) for some period of time as configured by
Read more

Soft Handover vs Hard Handover

-
Home                 LTE                NB-IoT            5G(NR-NSA) Now before we move to other things like measurements in handover, handover decision, handover procedure, handover interruption time, and mobility robustness optimization, let us take a look into difference between soft handover and hard handover. Soft Handover Hard Handover The handover in which radio links are added and removed in a way that MS always keeps at least one radio link to the UTRAN is known as soft handover. The handover in which all the old radio links in MS are removed before the new radio links are established is known as hard handover. This can also be simplified as make before break This can also be simplified as break before make As call drop rate is lower this handover is used to lower the rate of call drop. In this case higher rates of call drops are found Why soft handover is not included
Read more

5G abbreviations

-
Image
Home                 LTE                NB-IoT            5G(NR-NSA)   As per readers request this article is based on some 5G abbreviations (PCell,spCell,Scell,PSCell,MCG.SCG,Master-Node,Secondary-Node) for better understanding. What is Master Node? Master node:  The node (radio access node) that provides the control plane connection to the core network in case of multi radio dual connectivity (MR-DC). For example, it can be master eNB in EN-DC, a Master ng-eNB in NGEN-DC What is Secondary Node? Secondary node:   the radio access node, with no control plane connection to the core network, providing additional resources to the UE in case of MR-DC. For example, It may be an en-gNB in EN-DC or a Secondary ng-eNB (in NE-DC). What is MCG? MCG: Master Cell group It is a group of serving cells associated with the Master Node, comprising of the PCell   and optionally one or more Scells.  (see figure shown above) MCG and SCG are concepts under
Read more

PRACH Basic-3

-
Image
Home                 LTE                NB-IoT               5G(NR-NSA) In this section we will learn about PRACH Preamble Format and its basics as well as interview questions. Random access with NR supports different PRACH formats and numerologies to cope up with different deployments. The random access sequences themselves are based on the preamble format. Preamble Format: (Qus: How many new preamble format are introduce by 3gpp in NSA or SA case?) In 5G NSA or SA cases, there are 13 types of preamble format for FR1/FR2 and they are known as Format 0/1/2/3, Format A1/A2/A3, Format B1/B2/B3/B4, Format C0/C2. These 13 types of preamble format can be categorized into two categories: • Sequence length of L = 139, with subcarrier spacing of 15, 30, 60, and 120 kHz. These can be solutions for different coverage situations. • Sequence length of L = 839, with subcarrier spacing of 1.25 kHz and 5 kHz. This sequence can be used for very large cells (up to 100 km). (Qu
Read more

DC Carrier in NR

-
Image
Home                 LTE                NB-IoT               5G(NR-NSA) In this article, we will learn the basics of DC Carrier and why it is needed. Why in NR, DC subcarrier is not reserved like LTE? With legacy LTE (4G) it was decided that all devices (UE) should be capable of the maximum carrier bandwidth of 20MHz (UE can also support 10/15/5/3 MHz). This was a reasonable assumption at the time given the relatively modest bandwidth compared to NR, Whereas NR is designed to support very wide bandwidths up to 400MHz (for FR2) and 100Mhz (for FR1) for a single carrier. As well as NR supports multiple numerologies on the same transmitted carrier frequency. It is not necessary that all devices can support up to 400 MHz Bandwidth, hence in NR BWP concept is introduced. (To learn more about BWP Click here ). Note: in the above and below NR case figure, we assume that for each and every BWP have configured some  txDirectCurrentLocation  value.     As shown in the a
Read more

HARQ RTT Timer

-
Home                 LTE                NB-IoT            5G(NR-NSA)   Hi guys today we are focus on HARQ RTT timer in DL as well as UL for LTE and NB-IOT. What is HARQ RTT Timer? This parameter specifies the min amount of TTIs before a DL HARQ retransmission is expected by the UE. (3GPP TS 36.321 V8.0.0) Simple way to understand: the HARQ Round Trip Time (RTT) timer is defined for UE to sleep during HARQ RTT. When decoding DL TB for one HARQ fails, UE can next retransmission TB after at least HARQ RTT sub frames. While HARQ RTT timer is running, UE need not monitor PDCCH. At HARQ RTT timer expiry, UE resumes PDCCH reception. Two type of HARQ RTT timer is there. HARQ RTT Timer : This parameter specifies the minimum number of subframe(s) before a DL HARQ retransmission is expected by the MAC entity. (3GPP TS 36.321 version 13.3.0 Release 13) UL HARQ RTT Timer : This parameter specifies the minimum amount of subframe(s) before a UL HARQ retransmission grant is e
Read more